Find cheap flights to Boulder

Find cheap flights to Boulder

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Good to know - Cheap tickets to Boulder

Low season

NovemberBest time to beat the crowds (5% less expensive on average)

High season

JulyMost popular time to fly (22% more expensive on average)

Average price (return flight)

£538(avg. price over the last 2 weeks)

Good deal (return flight)

£346or less

Good deal one-way

£229or less

Top tips for finding cheap flights to Boulder

  • There is no major airport in Boulder. It is instead served by Denver Intl Airport.
  • Looking for cheap airfare to Boulder? 25% of our users found tickets to Boulder for the following prices or less: Cheap flights to Boulder from Bristol £476 one-way - £476 round-trip, from Birmingham £567 one-way - £498 round-trip, from Inverness £574 round-trip
  • Book at least 3 weeks before departure in order to get a below-average price for flights to Boulder.
  • High season is considered to be July and August. The cheapest month to fly to Boulder is November.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Boulder flight deals.

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Top 5 airlines flying to Boulder

Scores according to KAYAK customer reviews

8.1
JetBlue
Overall score based on 19,740 reviews
8.3
Boarding
8.2
Comfort
8.6
Crew
7.9
Entertainment
7.8
Food
Airline reviews

Pros: "On point"
Cons: "Keep the good work"

Pros: "The crew was great. They let me go back to see if I could find my laptop that JFK TSA did not return."

Pros: "My seat was broken, so I couldn't recline, which made my lower back ache. The TV was fuzzy and several channels didn't work, and others would cut in and out"
Cons: "Took me asking twice where my coffee was. Flight attendant forgot."

Pros: "The JetBlue crew as always was friendly and helpful. Love the snacks. We like JetBlue far more than other airlines. This trip was partially due to a credit from a previous trip, which was cancelled due to medical issues. Getting a credit was very painless, and the agent was sooo courteous and helpful! Just a great airline!"
Cons: "Logan needs to be updated. The concourse is old, worn out, disorganized. Due to weather our flight was a bit late, but everyone kept us well-informed. A most pleasant surprise compared to a certain "Untidy" airline with cramped seats, lots of extra charges, late flights, and a crabby crew."

Pros: "The cabin crew came through to collect waste from the passengers and made an effort to separate recyclables from trash. Air travel generates too much waste so it's nice to see JetBlue making an effort to reduce waste."

Pros: "There was free internet in the flight! In addition to movies and what not."
Cons: "It only flies out of JFK, and it is a bit far for me"

Pros: "The leg room was great, and the trip was enjoyable."
Cons: "The aircraft itself was in average shape and dated (weathered seats, didn't have power supplies)"

Pros: "Just disappointed in delay of about 1:15"
Cons: "Delay"

Cons: "Delayed 2 hours for lack of pilots."

Pros: "Jet blue is great."
Cons: "Delays are not. We were on the receiving end of bad weather up and down the east coast which delayed our late flight many hours"

Pros: "Leg room!"
Cons: "Nothing"

Cons: "The flight attendant was sitting next to me and wouldn’t shut up. So annoying!!!!"

Pros: "We love flying Jet Blue, especially because of the leg room. Everyone is so attentive. The snacks are great, too."
Cons: "Unfortunately one of the monitors wasn’t working."

Cons: "No working internet or video"

Pros: "We started late and the flight was unbelievably bumpy and no updates from the pilot - it’s nerveracking!! It also took us an additional hour to get to Denver!"

Cons: "Overhead light and recliner weren’t working"

Pros: "Great selection of food and entertainment, nice service."
Cons: "We taxied for 40 minutes before taking off without getting any information about why we weren’t moving."

Pros: "The TV was nice"
Cons: "Some of the most uncomfortable seats both to and from Denver that I have ever sat in. Felt like sitting on a stone park bench. My back still aches 2 days later. It was a redeye, so I didn't much interact with the crew, but they seemed efficient and professional. They did not wake up during drink service, which was appreciated. Those planes suck!"

Pros: "They canceled the fly and left me in NY 3 days did not gave any reson for wy they cancel the flight and the didn’t help with hotel or noting cal"

Pros: "On time flights with punctual boarding and early arrival Polite flight attendants Pilots pointed out areas of interest during the flight Comfortable take off and landing Unlimited snacks and beverages, even on shorter flights Free entertainment, even on shorter flights"
Cons: "nothing"

Pros: "Okay food and drinks"
Cons: "There were smelly people on a hot plane making more smells here and there for over 3 hours. I couldn’t breathe. My entertainment console did not work to full capacity"

Pros: "Length of flight"
Cons: "Not much"

Pros: "Leg room was good."
Cons: "The flight was delayed twice, then we had to sit on the plane for around 45 minutes before we could take off. I never seem to get in and out of JFK on JetBlue without some type of delay."

Pros: "Customer service over the phone was amazing."
Cons: "I paid double to change my flight and then it was canceled and then had to rebook for another flight that was suppose to leave at 9pm but didn't leave til 12am. One of the worst days of my life"

Cons: "No in flight ent or wifi"

Pros: "the service of staff and great fly-fi feature"
Cons: "4 hrs delayed due to thunderstorm"

Pros: "The seats are comfortable. Enjoyed the TV. JetBlue is our preferred airline. Haven't had a bad experience."
Cons: "The free snacks could be a lot healthier, i.e. apples, hummus,"

Pros: "We arrived earlier than expected and easy boarding."

Pros: "JetBlue did a good job, as usual."
Cons: "There was a screaming Infant in the seat next to me that continued to scream for the first hour and a half. I requested earplugs, and wore them under my 34 dB noise isolating earmuffs (which were made for use at a gun range). The screaming was still loud enough to give me the worst headache that I've had in 4 years. Once this baby stopped, the baby in the row behind me began to scream and the one across the isle from him/her joined in. I would happily rebook with JetBlue if there was an option to not be seated within 5 rows of a toddler."

Pros: "Leg room, comfort, travel time"
Cons: "Flight was late an hour, and the snacks were okay."

Pros: "Boarding from back of plane"
Cons: "Didn't get snack I asked for and what I got (popcorn chips) I didn't like. Also chair wouldn't recline"

Cons: "you never put my luggage on my flight, so I had no clothing for the day."

Pros: "Roomy seats and satellite TV"
Cons: "Flight was delayed, no explanation, moved the gate without PA announcement"

Cons: "Online check in refused to let me pick a seat even though the plane was not full. It then did not generate, or allow me to print at the airport, a boarding pass. When my connection arrived at 7pm I stood in line at the gate while the airline employee working completely ignored us for a solid 15 minutes waiting to get my boarding pass. the flight then said it was delayed with a departure time of 9:05 and we did not even start boarding until after 9pm."

Pros: "Boarding first from rear seats worked for me because that's where I was sitting. Worked also for people in rows before they were announced. Gate agent didn't care I guess. My row mates get credit for sharing my middle armrests. Seats are tight. Loved the free Direct TV. Perfect for longer flights. Chose no food"
Cons: "Boarding first from rear seats worked for me because that's where I was sitting. Worked also for people in rows before they were announced. Gate agent didn't care I guess. My row mates get credit for sharing my middle armrests. Seats are tight. Crew didn't enforce the 'upright & locked' in row ahead at landing"

Pros: "Even in regular couch seats I found the leg room to be good."
Cons: "Flight crew was efficient but not particularly friendly. Could smile more."

Cons: "Had to pay for snacks and blanket, which is ridiculous. Very disappointed."

Pros: "Nice flight attendants..."
Cons: "Very cold in cabin-"

Pros: "Jet Blue treats its customers like they are real people and not just stock to be moved. There is adequate legroom. Their personnel are friendly and competent. This alone puts them above most airlines."

Pros: "After a long day of flights and airports it was a nice way to end the trip. Comfortable seats and no frills with class"

Pros: "Everything was a wonderful experience with Jet Blue"

Cons: "Flight got cancelled. Didnt offer new flight for 3 days. Did not offer hotel service. Very rude customer service."

Cons: "When we asked them the queries related to our transition as my flight was a connecting flight (Delhi -->>JFK -->> Denver), they misbehaved with us like anything. At that moment i felt like shouting at them as well and raising the complain against them but then i felt that only my time will get wasted. Hence i decided to proceed further and not to select/neither let my relatives select QATAR airways anytime in future. More over we faced a very hard time in getting veg food in international flight as my wife is a pure vegetarian person. While making the booking we didn't get any option to select between veg/non veg food. VERY MUCH DISAPPOINTED WITH SERVICE. --VIVEK (+1 7204214442)"

Pros: "ordinary flight"
Cons: "there was 1 hour delay"

Pros: "Comfortable seats, friendly crew, free fast WiFi"

Pros: "All of the above aspects of the flight were fine."
Cons: "Although I re-checked the bag at the Royal Air Maroc terminal, it did not make the flight. I was stuck in Denver and was unable to leave for my home in Gunnison--a four hour drive--for three days while waiting for my bag to arrive."

Pros: "The terminal at JFK"
Cons: "Being seated apart from my children and the children being treated very rudely and unkindly by the cabin crew on board. The cabin crew left my 8 year old son, who had been travelling for nearly 24 hours at that point and was seated in a different row from me, crying because of his actions. He did not try to make amends for his actions, nor did he apologise."

Pros: "great staff, kept checking on us and offering beverages/food"
Cons: "got extremely hot in the cabin right before landing all the way through exiting the airplane"

Cons: "Flight was delayed an hour and a half"

Cons: "Our flight to Zurich was canceled and we had to take 3 flights to get to San Diego instead of 2. It was a huge headache. None of our flights were even with Swiss."

Pros: "Crew was great. Ice cream was fun. Swiss chocolate was a nice surprise!"
Cons: "Short flight with no entertainment, no means to charge devices."

Pros: "Friendly and professional crew. Plane was clean"
Cons: "Tight space in economy class(to be expected)"

Pros: "The plane wasn't totally booked and very clean"

Pros: "great staff"

Pros: "timely departure"
Cons: "too hot in the plane!!"

Pros: "Crew were good, apart from forgetting at breakfast time that I had ordered gluten free food. Food was OK but not memorable."
Cons: "Business class is not as roomy as other airlines. My partner had to climb over me to reach the aisle, there is very little storage space and seat size is quite small. Choice of movies is limited."

Pros: "Good flight"

Pros: "Food"

Pros: "Abosolutely nothing i paid extra for the good reviews i found online but the service was so poor i am disapoi ted i paid that nuch extra for a terrible experience"
Cons: "Entertainment didnt work for the entire trajectory I requested assistance and was ignored every time I requested a vegan meal and was not provided one Boarding was long and disorganized Bathrooms were so dirty, we had not taken off and the barthrooms smelled terrible"

Cons: "All of it"

Pros: "Everything except the seats."

Cons: "The airline changed a seat reservation after I paid for it. The Swiss support staff told me on the phone they would call me back. They never called back. I called again and was told the seats are changed and I can’t do anything anymore. The return flight seats also disappeared from the reservation. I had also paid for it. The support staff when I called again put back the seats for my return flight. I tried to check in online. Not working. Tried at least 50 times. Not working. Called the support staff. They told me to call the check in support center. I called the check in support center at least 50 times where mi was told the staff are busy and could not answer the call. I called at 6:00am next day where I was told by the check in support staff that my ticket had an issue which they did not know exactly what was the issue but prevented me to do a check in. I drove more than 2 hours to the airport where finally I could check in but I was told that my return flight seats had disappeared again. They managed to put them back again. I hope this time it’s finally ok. The support staff on the phone told me I could get reimbursed for the seat reservation I had paid for for the on going flight. The Swiss staff at the airport told me there would be no refund. Swiss is terrible"

Pros: "Excellent food. Lovely service. Departure and boarding on time."
Cons: "No entertainment at all. Very limited leg room"

Pros: "It was an amazing flight with an amazing service thank you United."

Pros: "General attitude of staff"

Pros: "Service."
Cons: "Leg room."

Pros: "Very pleasant flight, excellent take off, didn't feel a thing. The crew was friendly and helpful."

Pros: "entertainment selection"
Cons: "upgrade entertainment system, needs touch screen and screen wouldn't turn off completely. leg room and space under seat"

Pros: "Boarding and cabin crew were excellent."
Cons: "Seats were too tight and squeezed."

Pros: "Boarding was on time. Staff very courteous. No complaints at all"

Pros: "The ambient being so relaxing felt asleep all the way to Zurich."

Cons: "Never happened because I was rerouted through Istanbul. And for anyone checking Istanbul is 3 hours in the wrong direction to my ultimate destination."

Pros: "In general it was perfect. Chocolate from Suiss at the end of the flight is just amazing!"
Cons: "Because it was a long flight, we would have liked to see a bit more the staff passing around slowly, so we could have asked for water in the night. The seats were not as incredible than the first flight from Spain to Zurich."

Pros: "We were very pleased with our flight on Swiss Air."

Pros: "The movie selection was good and I found a new series to watch. The food was good. Liked the cheese and chocolate."
Cons: "Wish I had more leg room. The long flights cause fluid build up in my legs which was very uncomfortable for eight hours."

Pros: "The food and service was wonderful."
Cons: "I was disappointed that there was no plug-ins to charge electronics."

Pros: "Food"
Cons: "The seats were too small. No room at all!! Could not rest bcause the passenger behind me was kicking the seat the whole trip. Very very disappointed We also paid money to reserve our seats but then checking in they gave us other seats. This is not how you do business."

Pros: "Food was adequate for economy. Free drinks on trans-Atlantic flights are a nice perk. Cabin crew is friendly."
Cons: "Flight was delayed due to incoming aircraft. It was probably not the airline's fault. Berlin Tegel gate area is too small for international flight - not enough seats and nowhere else to wait after security."

Cons: "When getting our meals the flight attendants didn't ask anyone to move their seats back up so it was difficult to eat since there was no space."

Pros: "I was upgraded! Delicious lunch."

Pros: "I enjoyed the service provided once we boarded the plane."
Cons: "The plane was delayed for over 5 hours. The transfer desk crew was not the most welcoming staff. Very rude."

Pros: "Service was great --"
Cons: "Pulled a muscle trying to get out of the seat to use the bathroom-- seats are just too close--dangerous..."

Pros: "Crew great"
Cons: "Impossible to work on laptop with front seat in recline"

Pros: "Seats very confortabile"

Pros: "Everything. Service was excellent."
Cons: "Everything was very good."

Pros: "Good was OK and crew were super attentive"
Cons: "On my return ticket from Vancia to SFO staff at the counter forced me to check in my carry on because it was 1 inch wider than the super narrow box and 11 kg instead of 8 kg which is allowed. However in the inbound trip SFO Valencia l was able to carry the very same carry one with the same weight on the plane. First, it's not acceptable to limit carryon to 8 kilograms for trips including transatlantic segments. I fly a lot with Delta / air France and they have higher limit as it should be. And second, criteria should be applied consostently across Swiss. Why is it no problem from SFO to Velalencia, but it is a problem from Valencia to SFO? Also, online check-in is horrendous and unacceptable in this day and age. SUPER slow and cracked a couple of times on my mobile device"

Cons: "My flight attendant was rude and condescending the entire flight. I don't appreciated being treated like a moron for asking someone to repeat a question."

Pros: "Very friendly check in clerk ( Andrea ) Easy airport"

Pros: "Almost everything was good. Crew was friendly and courteous. They treated out kids specially well, with puzzles etc. When the entertainment system stopped responding the crew member stopped by more than once to "send" our choice of movies to our screen. (Since the keypad became non functional.) In-spite of the glitch we would fly Swiss again!"
Cons: "Entertainment system was buggy and stopped working mid flight. Headphones were of extremely poor quality."

Pros: "Food."
Cons: "Not working screens in the plane in my area, gate full of smoke coming from a smoking lounge without a place to buy coffee or food, not civilised stewards (I saw them jumping through fences to skip some part a line at the airport in US). Also the seat in front of me was stretching out more than mines and I was squeezed."

Pros: "The seats had a large amount of leg room!"
Cons: "We left a little late."

Cons: "When it was time to board, they just said we'll start with rows 1-15 then 16-30. However, they just let everyone stand in line and go as the line was started. It would be nice if they announced rows 1-15 and then announced the second set of rows so at least everyone knew when to go. It just seemed unnecessarily confusing to me."

Pros: "Great service, very good selection of on-board entertainment"
Cons: "Long delay in boarding and take off was not addressed in any kind of announcement. Food is average"

Pros: "In flight entertainment was decent"
Cons: "Seats were not comfortable. Will fly a different airline next time."

Pros: "Good crew and accomodating"

Cons: "Arm rest doesn't go up all the way. Very difficult to get out when seats are reclined in front of you"

Pros: "flight attendants were very nice."

Pros: "Friendly, helpful and funny staff"
Cons: "Extremely crowded, very hard seats. Note: flew with United, not a Swiss Air flight."

Cons: "Late leaving HK meant I missed connecting flight!"

Pros: "Everything."
Cons: "I think James Bond movies would be appropriate."

Cons: "My luggage didn't arrive at my destination until 2 days after I did. And after I checked my luggage, a leather satchel was stolen from my suitcase. I reported the theft to Virgin Atlantic and requested a report nearly a week ago and have heard nothing back. I am usually careful about packing luggage, and did not think the leather satchel would attract a thief working for the airline, but I will not make that mistake again! DO NOT TRUST VIRGIN TO HANDLE LUGGAGE."

Pros: "No food provided limited entainment"
Cons: "Chairs were comfortable"

Cons: "Layout of seats is not very social when traveling with partner in business class."

Pros: "I am a disables person who can not walk more that a few feet without assistance. I was helped all the way to my seat which was great. The Terminal employees were very helpful"
Cons: "The food was burn on to the bottom of the dishes and to hard to eat. The crew spent most of the time in the galley and only came out to serve the food."

Pros: "The service was really excellent"
Cons: "The service was really excellent in every things the staffs onboard very friendly and active, the food was very good too. The flight very comfortable."

Pros: "Slightly wider seats, happy and smiling crew, brand new aircraft with many new features. The facility to book and pay for extra legroom is invaluable in this day and age."

Pros: "Food Menu was great. The Flight attendants were great. In Flight entertainment was good."
Cons: "The internet comes with a cost. No Club Soda on the flight . Seats are a bit tight. Asked for an upgrade ( complimentary ) and was told none available , but on during the flight , checked - many seats were empty !! Was not offered a paid upgrade also. The online check in is terrible. I have to first log on with my name and then with my wife's name and then do check in. Should be able to do check in with one code for both of us simultaneously. The check in page asked same information multiple times , even though the details were entered while booking ticket."

Pros: "I thought that the food was particularly good for airplane food and it was distributed generously."
Cons: "I had a very disgruntled passenger behind me who, despite it being an overnight flight in which the lights are turned off, was furious when I reclined my chair (the passenger in front of me had reclined hers so without reclining mine it was a bit tight for sleeping) and was literally hitting the back of it throughout the flight and audibly complaining. At one point he complained to an attendant and she asked me to put my chair back up. I put it back down after the meal and he continued to behave absolutely inappropriately, making my flight experience very uncomfortable."

Pros: "VS is usually an efficient operation, and this flight was no exception. Crew were polite and helpful (flew in economy on this leg). IFE had an excellent selection, food was good, etc."
Cons: "Boarded really early, which leaves you sitting on the plane before takeoff for awhile. Seats (Airbus 333) could use some more padding."

Pros: "Amazing !"
Cons: "Nothing all good really"

Pros: "The crew was so kind and amazing. They definitely made our flight great!"
Cons: "The entertainment wasn’t working for most of the flight. We only got about an hour and a half of entertainment"

Pros: "Seats comfortable. Food was good."

Pros: "It was a great flight!"
Cons: "nothing, pretty much perfect!"

Pros: "Seat was comfortable, good movies, etc"

Pros: "Crew was great !!!"
Cons: "Seating in upper class is uncomfortable and bedding is not fresh."

Pros: "Very friendly crew. The meals are good, nice variety. Hot food is hot."
Cons: "Seats are not the most comfortable and sometimes the screen on the entertainment tv doesn't work that easily."

Pros: "Crew was very attentive...food selection was excellent"
Cons: "Nothing"

Pros: "Speedy boarding and good locker space"
Cons: "Lack of room in seat especially with seat in front reclined."

Pros: "Craig in first cabin flight crew was amazing. :))))"

Cons: "Seats were really old and outdated"

Pros: "The food was good. The lane was comfortable"
Cons: "The flight was nearly full, and the 767 is a large aircraft. I think it would be preferable if Virgin Atlantic would board the plane by zones, similar to other airlines."

Pros: "The crew were really nice and seemed to genuinely care about the passengers, were approachable and were very happy to chat with passengers and help them out."
Cons: "The food options always seem to run out by the back of the plane and this time didn't match the menu they gave me at the start of the flight, not that I minded because the option I was given was pretty tasty."

Cons: "Getting home 5 hrs later than planned"

Pros: "Comfort, service food and entertainment. What more can you ask for."
Cons: "Nothing. ]"

Pros: "Limited numbers in the top deck, silence, service and deplaning first."
Cons: "Food has to much of an asian slant."

Pros: "A smoothtrip run by great staff."
Cons: "Thé food was rather stodgy overall."

Pros: "I loved the in flight entertainment, and there was always so many snacks and drinks available for free!"
Cons: "For boarding, we had to walk a rather far distance due to construction."

Pros: "Crew were friendly and courteous"
Cons: "Poor drink selection. Food mediocre. I felt like I was in the living room of the Beverley Hillbillies. Loud people, dressed like slobs. No manners"

Pros: "Crew were great"
Cons: "Uncomfortable to sit for eight hours"

Pros: "Fast boarding, not a crowded flight, ahead of schedule."
Cons: "Paid extra for my check in bag."

Cons: "luggage never made it to Boston? Don't know who's fault it was.Problem was corrected."

Pros: "We paid extra for exit row seats so we had good leg space"
Cons: "The seats are so small that only your backside fits on it and we are not big people. There is no support for the thigh and I had severe cramps after leaving the aircraft. The flight to LA with Virgin Australia was far more comfortable."

Pros: "Great, friendly, professional crew, clean comfortable plane. Loved that full dinner and baggage and wine was included in an economy class overnight from DC to London as well as breakfast. Best flight in a long time, will definitely fly again."
Cons: "the tv screen's touch screen capabilities could use an upgrade, it was a hassle to navigate, not very sensitive to touch."

Pros: "The service, the drinks, the crew were friendly and professional. Entertainment choices were excellent.0"
Cons: "The space was a bit cramped and the poxket in front of the chair to jeep things was broken."

Cons: "These seats are small"

Pros: "Cool flight, mainly because it was empty. Good food"
Cons: "Seats weren't that comfortable. Entertainment sucked because the screen functions were terrible, very difficult"

Cons: "Flight was cancelled ."

Pros: "good plane and timing"
Cons: "meal was not served according to the request and no sound support from the staff"

Pros: "I like flying Virgin whether Australia or Atlantic!"
Cons: "Just a little bit more leg room."

Pros: "The crew was friendly and professional, the food was good and offered frequently due to the long flight time (10.5 hours). The plane was comfortable even though nearly full. Overall, it was a good experience and I would definitely fly with Virgin Atlantic again."

Pros: "Crew was professional."
Cons: "Couldn't stretch my right (window side) leg. Display quality was poor."

Pros: "We really enjoyed flying with Virgin and so made sure we booked into a Virgin flight for this trip and not delta. The food was good, entertainment good when it worked."
Cons: "We got told that our flight number had changed from VS103 to VS4049 but still a Virgin flight. Only when we checked in we found out we were now flying with Delta and number was now DL285. Was not happy as wanted to fly with Virgin.The seats were ok but the entertainment system went down mid film. Took an hour to get started again. The games didn't work. Staff were a bit grumpy."

Pros: "No one would update that the flight was delayed. They would not even communicate as to why delayed and would not put us in a different flight. Absolutely no customer service. Disappointed and would not fly jet airways again . I missed my conference lecture today as I was late."
Cons: "No communication, nor will they tell you why it's late . Nor will they move you to another flight even wen requested"

Pros: "The food was AMAZING. No, seriously. Everything we had was great."

Pros: "I was very impressed by the generosity you show concerning food och drink. the staff was kind and glad."
Cons: "I never understood how to connect the earphones to the screen so I couldn't ser any movie. But - I could have asked the staff of course ..."

Pros: "We paid extra for more legroom and it was totally worth it."
Cons: "The regular seats were so lacking in leg room that I could not cross my legs, reach the floor to get my glasses when I dropped them, or even get my carry-on out. There is no way to get into the "brace for impact position" with arms over your head and head in your lap! This is really unsafe, not to mention really uncomfortable. The flight was long, so comfort would be nice! Our first flight was regular seats and I was pretty miserable and I am a slender woman 5'6". The extra 3" was great, and we had to pay more on the return trip. The FAA should be investigating seat size and safety on planes."

Pros: "Smooth flight"
Cons: "My economy window seat was just too cramped for a big guy on a nine hour flight"

Pros: "Hard product and food"
Cons: "Crew need to realise their voices travel and some conversations the whole upper cabin don't need to hear"

Pros: "Entertainment system worked well. Good choices."
Cons: "Food decent, but not enough fluids offered during flight . Was very dehydrated by end."

Cons: "We did not board at the scheduled time, although I believe we arrived on time. The crew was demeaning and singled out individuals who were causing the aircraft to not move. It was in a very pretentious manner, not like southwest personnel who have similar antics but with a playful tone. The plane is a small one where bags don't fit overhead and many head bumps occur. We arrived fine which mean the flight was successful but it was not very enjoyable."

Pros: "Left on time, arrived early. Great cabin service, attentive and polite. Comfort Plus seats are worth the extra few bucks."
Cons: "Nothing. Low rating for entertainment only because there really wasn't any, but I wouldn't have used it anyway, so no big deal."

Pros: "All went as planned and expected. No thrill- like taking a Greyhound bus in the old days...gets you where you are going but without much pizzazz New seats and quite clean, but the new seats were very hard and uncomfortable after an hour."
Cons: "Somewhat claustrophobic and always wish the drop down tray table behind could be disconnected from my seat. When the passenger behind uses the tray as a set of bongo drums to keep beat with his headphones it is a pretty miserable trip."

Cons: "I'm not sure how you lose a bag on a direct flight from Atlanta to Denver, but Delta found a way to do it. They didn't even put my bag on the plane and had to send it with the next one coming. To their credit, they did drive it out to my house when it got here."

Pros: "The only airline that I'm aware of that still offers: • free snacks • free checked bags • free meal and drinks on international flights"

Pros: "Appreciate having movies available through wifi however didn't realize this until only an hour left in flight."

Pros: "I appreciated that everyone gave us updates constantly to let us know the status of the flights"
Cons: "My flight from Detroit to Denver was suppose to land at 1:15 ish and I had an interview to make at 3:30 thinking that I would have plenty of time to grab my bags and and get a cab to greenwood which is where my interview was. The flight was delays almost 3 hours and I was not able to make my interview which was the whole reason I flew to Denver in the first place. I understand that things happen but now Im out of a possible job that I was interviewing for and I am also out the $250 that I spent on the flight. The flight was delayed because they didn't have a crew to fly the plane which blindside is always 20/20 however it seems like pretty poor planning."

Pros: "Funny, engaging crew. Nice change. It was Thanksgiving, could have offered a free drink or a better snack."

Pros: "The crew played games with us before we got on the plane and handed out water and snacks. That was a first for me and it was pretty awesome. I told them a head of time that I get really scared during tubulance and they all knew my name and checked on me during the bumpy parts of the flight."
Cons: "I didn't like that I had to pay for movies"

Pros: "Nice comfortable plane"
Cons: "Late by HOURS!!!"

"We flew First Class to LA from Denver on the Delta-branded contract airline - Sky West. On the way back, we flew First Class on a Delta Airlines owned jet, and the experience was so much better. The flights should have been comparable; but unfortunately cost-cutting by Sky West was evident."

Pros: "My favorite airline to travel from Denver to Puerto Rico, round trip, and in Atlanta I will make the stopover, I also feel so safer to travel with my cat ... they are the best airline in everything"
Cons: "Let people who travel with pets earn extra points for taking them with Delta"

Pros: "The accommodation to the military service members!"
Cons: "Air fresheners should be used on the airplane."

Pros: "Delta is doing a great job keeping everything calm and clean during this pandemic!"

Cons: "Nothing all excellent"

Cons: "It was great! Nice job Delta !"

Cons: "Wouldn’t change a thing! I don’t always fly! But when I do!! I fly delta!!"

Pros: "Christina brown was amazing at gate"

Pros: "The staff at Delta are always friendly and helpful and they were able to squeeze me onto a very full flight."

Cons: "The main economy seats were far too narrow."

Cons: "It was a Great flight. I always enjoy flying Delta"

Cons: "My flight was delayed almost 3 hours. Not good. Once in the air it was fine."

Pros: "Everything ok. I was hoping to buy food but glad to see almonds as one of the free snacks. Delta seems to be upping its game a bit lately."
Cons: "No US carrier seems able to master smooth boarding without standing waits."

Cons: "Not really an experienced flyer. Overall the flight seemed good. No issues with airline or airport. Just don’t understand self-important people that feel compelled to push the overhead storage limits with their bags."

Cons: "1.5 hour delay...no reason given!"

Cons: "Flight was delayed and completely packed so our family could not get seats together"

Pros: "Boarding was easy for a large number. Seats were comfortable. The crew was pleasant and attentive. The food was very good actually. Love the Mile High Tea!"

Pros: "The seat was great, I wish all seats on the plane were that comfortable"
Cons: "Nothing, everyone was great"

Cons: "No meal option and my video screen volume did not work"

Pros: "The crew was great and super nice!"
Cons: "Screens with games, more leg room, and not having kids behind us messing with tray tables the whole flight."

Pros: "Not comfortable a little but scary on the flight to Detroit. Way better coming back to Denver"

Pros: "Entertainment"
Cons: "Boarding at JFK.Always messy"

Pros: "Good entertainment selection and great crew"
Cons: "Seats are more uncomfortable relative to other airlines"

Pros: "Inflight experience was fine. TVs didn’t work but Flight attendants are friendly on Delta, cramped seating - but not unlike other airlines."
Cons: "Regular fare seat assignment not available prior to gate . Airport concourse F - poor - limited services. Customer Service seemed uninterested and unable to provide service both on phone and at gate. I’m a frequent United flyer & today’s Delta service experience made me more loyal to UA."

Pros: "Early and middle seat was open!"
Cons: "Coffee tasted like fish. :("

Pros: "Entertainment choices were excellent, many new movies available, so I was able to see movies is been meaning to watch. There were drinks available."
Cons: "The air vents barely trickle out any air anymore. No relief to be had. Airline crews say hi and goodbye but that doesn't make them friendly."

Pros: "The crew on the airplane was great. We had 2.5 hours turbulences but the crew started to give out drinks as soon they got the ok from the pilot"
Cons: "We went in LGA to the Baggage drop off and the employee there was super rude. On the flight to New York with Delta we had to check our carry ons at the gate because it wasn't enough room for bags in the airplane.so we asked when we checked our one suitcase if we can/should check our carry ons to avoid having to do it at the gate. The delta employee told me sure no problem. He checks in my one suitcase I purchased gives me the tracking paper and says ok have a good flight. I asked him so what is with our carry ons and he told us that that would cost 25$ and we can't check those in at the drop off?!?We ended up taking the carry ons with to the gate and then off course there wasn't enough room on the airplane that we had to check it in. And surprise it was free?? We had never issues with Lufthansa, icelandair etc. with checking our bags at drop off to not needing to carry it around and than still end up to check it at the airplane. Every airline has been more than happy that we volunteer to check our bags that they don't have the trouble at the gate."

Pros: "We boarded close to on time, no hassles. Allowed my husband and me (retired military) to board early, thank you."
Cons: "LAX security is awful. We never left the airport (arrived LAX from Sydney AU) yet were forced thru security again. Had to remove shoes, was scanned and "frisked" by TSA to get to Denver. To go to Australia, Denver TSA waived the removal of shoes, skipped the scan for the metal detector and no one touched me, ditto for LAX on the trip to Sydney. Where's the uniformity or standards for TSA?? Why did I have to be subjected to this garbage on the way home?? This is why I despise flying. It makes no sense to me. This ruined what was a great vacation."

Pros: "Not much. Boarding by "zone" works ok, but is no quicker than most other boarding methods."
Cons: "Boeing 767-400ER seats had no leg room for 6'+ traveller like me. The entertainment system was so old that there were no 115v outlets or USB ports. On a 7-hour flight, that is a significant problem for travellers today with multiple electronic devices. Finally, we were not told in advance that we had to go through security twice and through US Customs BEFORE leaving Dublin. So, the 6-hour layover at JFK was a complete waste of our time as we did not have to go through Customs there."

Pros: "JFK to Denver the flight Attendants were once again great. Lots of entertainment choices again. The usual rough air coming into DIA."
Cons: "From JFK to Denver the seats were to close for leg room by an inch or two. The temperature was hot most of the flight."

Pros: "Love the built in tv’s with free entertainment."
Cons: "The plane got delayed on the runway and the shut the engines off so the plane got super hot, but even after we got up in the air it never cooled down. Normally I’m freezing on flights, but I just sat sweating this whole flight. It was terrible."

Pros: "The seats had plenty of leg room and the crew was was very kind."
Cons: "My seat was uncomfortable and I was seated in the only row of the aircraft without entertainment for a four hour flight. Then on top of that the passenger next to me removed his shoes and you could smell his feet from a mile away but the flight attendants never requested for him to replace his shoes."

Pros: "I usually have had great experiences with Delta. The meal selection was limited. By the time they made it up to my seat they had run out of what we wanted. Also, the entertainment system at my seat and my husbands wasn’t working well. One of the bathrooms had a cabinets Tvst oliiiooooiiooooioiooiiiooiio"

Pros: "The staff really helped me out getting on standby so that I didn't have to wait for a 9 hour layover. Overall great experience and great staff."

Pros: "It got me home, eventually."
Cons: "Poor communication, a 6 hour delay followed by a 7 hour layover (during which we had to sleep on an airport floor because Delta couldn't offer us any hotel vouchers). Gate agents disappeared after 7pm becuase they were due to be done with their shifts when our flight was originally supposed to leave at 6 pm. It felt like we were trapped in the movie The Terminal. Oh! And our bag was misrouted, because that was just how things went those 2 days. All in all a 6 hour trip turned into 18 hours. I could have driven home in that amount of time!"

Pros: "Love the inflight entertainment and the usb plug for phones. Flight left on time and go in a little early"
Cons: "Did not love getting charged $2 for headphones and the girl sitting next to me getting them for free. Super annoying"

Pros: "The entertainment unit allowed me to watch the Denver Broncos game live which helped lessen the delayed departure and uncomfortable seating."
Cons: "Uncomfortable seating....too crowded!! We had a delayed departure by 30-40 minutes because of a computer download issue. Too many folks carrying carry-ons delayed boarding. I wish folks were not encouraged to go that route but to check baggage. This time of year gets even tougher with folks carrying Christmas presents and over sized personal items. Ugh. Not fun to travel this time of year."

Pros: "really helpful and friendly service and nice seats."

Pros: "Crew Entertainment Service"
Cons: "Boarding on most airlines is a bit chaotic they always call out zones and often they aren't listed on your printed ticket otherwise was ok"

Pros: "Crew was all very nice"
Cons: "Flying is always uncomfortable"

Pros: "Was rebooked on Iceland Air. Enjoyed that flight very much"
Cons: "That I was bilked on bus, got stuck in traffic and missed flight to Denver"

Pros: "Stewardesses were very helpful and polite."
Cons: "Didn't like my family (including 14 year old daughter) being assigned separate seating for a long overseas flight! Idiotic!!"

Cons: "AUSTRIA AIRLINES, (YOUR OTHER COMPANY), WENT THRU MY BAG IN O'HARE, FLIGHT 66 TO VIENNA. THEY TOOK OUT ALL OF MY HOUSE, AND CAR KEYS , AND MY REMOTE CONTROL FOR MY PICKUP, (ALL ON ONE RING), AND DID N O T PUT THEM BACK INTO MY BAG. I WILL N E V E R FLY AUSTRIA AIRLINES, OR LUFTHANSA AGAIN! I SENT AN EMAIL TO YOUR CUSTOMER RELATIONS DEPT...customer.services@lufthansa 3 times and they failed delivery."

Pros: "Inflight entertainment was excellent, the food and service was excellent, no complaints except for legroom."
Cons: "I'm a pretty tall guy. Legroom was an issue if you are over 6 ft tall. The trey's / tables can't fully extend making it hard to use for eating."

Pros: "Punctual departure, cabin crew were generally efficient and pleasant. The airshow (flight routing details) programme is one of the best I've experienced on any airline...."
Cons: "Boarding was a 'free-for-all' with no filtering of Economy passengers by zone or seat row. Less effective than Emirates in this regard. The hot snack offered before arrival at Denver was served in the final 50 minutes of the 10 plus hour flight. This meant that the service and tray collection, including the cabin preparation for landing was very rushed."

Pros: "The crew was focused on our needs but was not able to help in my situation."
Cons: "The flight was very crowded and I had a HUGE individual sitting next to me in that he actually overflowed into my seat. Due to the fullness of the plane it was imposable for me to move and very uncomfortable. For an individual this size there should be a requirement for them to have a business class seat or to purchase 2 seats. The food was very disappointing overall."

Pros: "Considering this was a 10 hour flight, I thought the plane was comfortable with decent leg room in economy class. We were served two hot meals, both of which were very good. There was also complimentary wine, beer, and spirits on board. It's been a while since I've flown overseas and was impressed with the wide array of available movies and in-flight entertainment. The crew was great and very attentive."
Cons: "It was the most chaotic boarding process I have ever seen. They had us at a gate with seats for about 50 people so people were crowded into the walkway area of the terminal. The announcements were very hard to hear if you weren't right by the person making them. There was no orderly boarding. Instead, there was a mad rush for those that weren't elite status of some sort to begin boarding."

Pros: "Great crew, very attentive. Excellent food and beverages! You don't get off of Lufthansa flight hungry! Good choice of entertainment. Lufthansa really knows how to take care of its customers on long-haul flights!"
Cons: "Online check-in is very difficult. told me that my request couldn't be completed, then when I got to the airport, they said "Oh, I see that you have already checked-in!""

Pros: "Stewards were nice and the pilot updated us regularly about why we were still not going anywhere."
Cons: "Before a ten hour flight we sat for almost three hours on the Tarmac."

Pros: "well prepared and goodfood"
Cons: "condescending and belittling attitude to customer from flight attendant"

"I'm not really sure what the difference is between Economy and Premium Economy on these long-haul flights, especially when the plan isn't very full and people in Economy can lie down across an entire row. The seats in Premium Economy are a bit bigger, but you can't recline or lie down and I'm pretty sure we get the same food options as regular economy. You get a little goodie bag that you don't really need. Also, there is really no point upgrading to business class on the short flights with Lufthansa. The seat size is the same as the rest of the plane. So, you're paying $50 or so for a pretty small snack/meal and a curtain between you."

Pros: "Easy boarding process"
Cons: "Crew climbed over my seat multiple times in order to get their stuff from the overhead bins. Also loud when people were trying to sleep"

Pros: "I didn’t even catch this flight - the connection time was impossible causing unnecessary stress!!! Just don’t sell this ticket which such a tight connection."
Cons: "Don’t sell an unrealistic connection time"

Pros: "Food was good"
Cons: "Late to board, had to wait on arrival for gate while cabin was getting uncomfortably hot"

Pros: "The crew and comfort."
Cons: "The food does not taste good at all."

Pros: "Everything"
Cons: "Nothing"

Cons: "Again, there was not enough time between flights. It was a HUGE rush in Denver to get to my next flight, and I almost missed it."

Pros: "They were smiling and very welcoming"

Pros: "Lufthansa should keep up the standard."
Cons: "The delay on the arrival time at Abuja because some passengers are transiting to other cities."

Pros: "The crew was amazing"

Pros: "The food was good"
Cons: "I paid for extra space and it looked like the seats I got were the same as all the others"

Cons: "This was a smooth as clockwork journey, the transit was easy and we were kept well informed about changes in the gate number"

Pros: "Boarding was great. There is priority boarding available for those booked on connecting long haul premium economy flights."
Cons: "The seat was very uncomfortable. For a 2 hour flight, it was okay. Any longer would have been difficult."

Pros: "Nice plane, about the best in-seat entertainment options I've ever encountered."

Pros: "it was great the crew was very friendly and the food was also good to my surprise definitely fly Lufthansa again"
Cons: "the seating is small there is not much room without touching the other person it is so small the one has a hard time to eat"

Pros: "The crew was nice and the movie selection was decent. Food was ok. As good as it can be when you pay $2,500 for a flight ticket knowing that they are not really there to offer you a service, they are there to make their own money knowing that as a traveler you really have no options other than an airplane if you want to go across the ocean."
Cons: "The difference here is that in a 9 hour flight you want to keep hydrated. Crew seemed lazy...they would not bring water to travelers very often...and when I called a flight attendant with the button call and politely asked if I could have some water, she seemed pretty annoyed and told me I can just stand up and go take my water in the back where they store food. NOT A GOOD SERVICE FOR $2,500!!!! It’s outrageous!! Seats become smaller and smaller...and you keep asking about my experience...$2,500 to travel seating in a miniature seat with no leg room is a bit much...and I know no flight company cares about this...we have no choice...either take that or don’t travel, right?"

Pros: "One flight attendant in particular was outstanding, Eva. Because of her, I would definitely consider Lufthansa for our next trip to Europe!! She mot definitely went above and beyond in her service and professionalism."

Pros: "Best part was how Lufthansa took care of travellers whose connection time was short. They had ground crew waiting and who escorted us through customs, and then drove us to the gate. This is how passengers should be treated. ~ Excellent movie selection ~ Great flight attendants"

Pros: "Excellent service, food and entertainment"

Cons: "you cancled my return ticket when I got off the plane in Frankfurt and did not contiue to Geneva.."

Cons: "I propose to keep on board the plane some bright and interesting toys for calming the children who, for almost the entire 10-hour flight, cry and do not give rest to all the passengers. I understand that parents should have worried about this. But if the parents can not do anything with their child, the new toys could help calm the child, and not turn a long flight into torture for other passengers and crew."

Pros: "Was not allowed on flight"
Cons: "When I missed the connection from the first leg of my flight and purchased the ticket from that leg to finish my itinerary, Lufthansa cancelled ALL of my return tickets. Both Lufthansa and my travel agency pointed the finger at the other and I had to purchase another $1000 ticket to get home. There was no cancellation emails or any notification. I didn’t know my tixkets were cancelled until I was trying to check in. Worst experience ever!!"

Pros: "One airhostess ruined my flight experience. Anyway in the beginning on the journey my daughter was not well and other crew members gave her candies. I liked the sweet gesture."
Cons: "I was traveling with my daughter. There was no food choice left for my child and me. Crew member rudely said there is only beef option left do you want to have it? I said no. I asked her are we not going to get anything to eat since you are out of options. She continuously kept on repeating that I said no and that she kept emphasizing that there is only beef option left. Finally she save the supplement To meal. Her tone was very impolite when especially we pay so much and service we get for a long flight is good"

Pros: "On time, Staff were excellent"
Cons: "Poor snack (sugary cookie) Big rush to make connection in Frankfurt, almost missed it. Should allow at least 2 hours to connect as they use buses to transfer from plane to terminal and often have to go through security again."

Cons: "When I missed the flight in Brussels I had no options re: changing my ticket as there was no ticket sales counter at the airport. Had to go to the travel agent and book a flight on another carrier."

Cons: "Bought these tickets almost a year in advance. Never given the option to select seats. Both my husband and I were stuck in the middle seats or not together on each leg of our flight. Food was horrible on every leg. Husbands tv did not work. I am petite and seats too small even for me. never again will o give this airline my money."

Pros: "I always try to fly with Lufthansa when I do go to Germany to visit my family. At times they might be more expensive then others but you don't pay extra for everything. Also I got a great price at Kayak. The service was excellent and I do love the fact that Lufthansa is now flying directly from Denver to Munich makes it so much easier."

Pros: "online booking"
Cons: "There is no one at Kayak to answer questions on weekends. Message says "call back during 'regular' business hours" but does not specify what that means, nor what time zone they are in. (BTW, most people travel on weekends so ya may want to consider providing customer service then...duh). When I finally was able to reach someone in order to upgrage to Premium Economy, they could not help me but said they would send an email with an answer to how much that would cost. The email never came. I will never book with Kayak again."

Pros: "All airplane was on time"

Pros: "Same as above."
Cons: "Same as above."

Pros: "In my way back from Germany to USA was poor, from the costumer service from the airport to the airplane. They charged me extra on my fly back to US"
Cons: "Very much everything"

Pros: "They fed us well, and the food was surprisingly good. Feather pillows were a nice touch, and great variety of movies to choose from on the long flight."

Pros: "Best part: Getting off the plane and swearing never to fly with Lufthansa again."
Cons: "Flying to Munich- flight was cancelled. Had to rebook on United for the following day. Arrived almost 2 days late (the original was direct, the United had layovers) and missed a planned trip to Neuschwanstein castle. Flying from Munich- The entertainment screen was broken, completely unusable. After a hard reset by the flight attendant several times... Still broken. She said she thought it would fix itself once we were at cruising altitude. Nope. Notified the flight attendant who said vaguely "I'll see what I can do..." Never came back to check, never got offered any sort of compensation (even something like a free mixed drink would have been nice), offer to move seats, nothing. So- ten hours with no entertainment/nothing to watch, just a malfunctioning screen. Food was mediocre. We boarded late, and left almost 1 hour late because they had to wait for an employee (who was not working, just getting a ride back) to board. Literally there and back with Lufthansa was a fiasco. On top of it, we have been back for 3 weeks and are still waiting to hear back from Lufthansa customer service. Apparently they only communicate by email with complaints. Not over the phone. So after repeated emails, just radio silence. Terrible airline."

Pros: "Everything was wonderful! Lufthansa is spot on from boarding, to in flight service to the moment you leave. They are helpful, friendly, fun and a wonderful crew where I know I'm in good hands!"

Pros: "The staff was so accommodating and friendly! Great trip!"
Cons: "Nothing."

Pros: "Flight attendants were always there when you needed them and were super nice. The plane was very clean and orderly and the crew just made it a really great flight."
Cons: "I really have no complaints at all. It was a super great flight and I will choose Lufthansa whenever possible when I fly in the future!"

Pros: "Food and overall service"
Cons: "nothing"

Pros: "Entertainment system helped time pass on 10 hour flight."
Cons: "Again, boarding was late."

Pros: "movies, food and drinks."

Pros: "Standard Lufthansa short haul, Crew attentive"
Cons: "arrived off stand"

Read more about JetBlue
COVID-19 information

Safety measures for airlines flying to Boulder

Airlines flying to Boulder have enacted additional safety measures and adjusted policies to better accommodate travellers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights to Boulder

Mandatory masks

Masks required on board, masks provided on flights to Boulder

Social distancing seating

Middle seats unavailable to book on flights to Boulder

Pre-flight testing

Testing for antibodies, testing for symptoms for flights to Boulder

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