£166 Find Cheap Flights from London to Pennsylvania

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Pennsylvania departing on 23/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Pennsylvania

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Pennsylvania.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Pennsylvania.
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Cheap Flights from London to Pennsylvania

Cheapest return prices found by our users on KAYAK in the last 72 hours
Philadelphia
Philadelphia1 stop£308
Pittsburgh
Pittsburgh1 stop£324
Harrisburg
Harrisburg2 stops£518
Scranton
Scranton1 stop£540
State College
State College2 stops£468
Allentown
Allentown2 stops£540
Philadelphia
Philadelphia1 stop£308
Pittsburgh
Pittsburgh1 stop£324
Harrisburg
Harrisburg2 stops£518
Scranton
Scranton1 stop£540
State College
State College2 stops£468
Allentown
Allentown2 stops£540

Book Cheap London to Pennsylvania Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Pennsylvania that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Pennsylvania

Tue, 4 Nov - Wed, 12 Nov
SWISS Logo
06:00 - 13:05LHR-JFK
12h 05m1 stop
SWISS Logo
21:00 - 13:00JFK-LHR
11h 00m1 stop
£223SWISS
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Thu, 13 Nov - Tue, 2 Dec
Lufthansa Logo
09:10 - 12:35LHR-EWR
8h 25mdirect
Lufthansa Logo
08:25 - 20:35EWR-LHR
7h 10mdirect
£229Lufthansa
Find Deal
Thu, 6 Nov - Tue, 18 Nov
Icelandair Logo
11:55 - 18:20LGW-EWR
11h 25m1 stop
Icelandair Logo
19:30 - 10:55EWR-LGW
10h 25m1 stop
£325Icelandair
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Fri, 14 Nov - Sun, 23 Nov
Icelandair Logo
11:55 - 18:20LGW-EWR
11h 25m1 stop
Icelandair Logo
19:30 - 10:55EWR-LGW
10h 25m1 stop
£327Icelandair
Find Deal
Sat, 4 Oct - Sat, 11 Oct
Aer Lingus Logo
12:00 - 19:20LHR-JFK
12h 20m1 stop
Aer Lingus Logo
16:55 - 08:00JFK-LHR
10h 05m1 stop
£337Aer Lingus
Find Deal
Sat, 13 Sep - Sun, 28 Sep
Aer Lingus Logo
09:50 - 16:50LHR-JFK
12h 00m1 stop
Aer Lingus Logo
18:25 - 09:05JFK-LHR
9h 40m1 stop
£345Aer Lingus
Find Deal
Wed, 22 Oct - Wed, 12 Nov
British Airways Logo
19:40 - 22:30LHR-JFK
7h 50mdirect
British Airways Logo
18:15 - 06:15JFK-LHR
7h 00mdirect
£352British Airways
Find Deal
Wed, 3 Dec - Fri, 12 Dec
British Airways Logo
18:00 - 21:05LHR-JFK
8h 05mdirect
British Airways Logo
21:50 - 09:40JFK-LHR
6h 50mdirect
£354British Airways
Find Deal
Fri, 5 Dec - Tue, 9 Dec
United Airlines Logo
13:50 - 13:05LHR-JFK
28h 15m1 stop
United Airlines Logo
10:05 - 07:10JFK-LHR
16h 05m1 stop
£361United Airlines
Find Deal
Sat, 6 Dec - Fri, 12 Dec
United Airlines Logo
09:00 - 23:44LHR-LGA
19h 44m2 stops
United Airlines Logo
10:35 - 07:10LGA-LHR
15h 35m1 stop
£367United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for London to Pennsylvania flights

Get data-powered insights and trends into flights from London to Pennsylvania to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest London to Pennsylvania flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from London to Pennsylvania.

The cheapest ticket to Pennsylvania from London found in the last 72 hours was to Philadelphia, at £472 return. The most popular route is from London Heathrow Airport (LHR) to Philadelphia (PHL), and the cheapest round-trip airline ticket found on this route in the last 72 hours was £472.

Can I save money by flying with a stopover from London to Pennsylvania?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £1,130 on average.

What is the cheapest month to fly from London to Pennsylvania?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Pennsylvania, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to Pennsylvania is February, when tickets cost £501 (return) on average. On the other hand, the most expensive months are August and December, when the average cost of return tickets is £696 and £659 respectively.

What’s the cheapest day of the week to fly from London to Pennsylvania?

The average price of all round-trip flights from London to Pennsylvania clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Pennsylvania on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from London to Pennsylvania. For your return ticket, we recommend flying on a Tuesday and avoiding Thursdays for the best deals.

How far in advance should I book a flight from London to Pennsylvania?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Pennsylvania, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from London to Pennsylvania, you should book around 2 weeks before departure, which saves you about 34% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.


Good to know - Cheap tickets from London to Pennsylvania

Low seasonFebruary
Cheapest flight£166
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly (21% more expensive on average)
Flight from London Gatwick Airport to New York John F Kennedy Airport

Flights from London to Pennsylvania: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from London to Pennsylvania 
Verified travelerFlew with American AirlinesLHR-PHLJul 2024
Make sure you are at the airport at least 3 hours early to ensure that you can check in, go through security, and so that you can find your departure gate within plenty of time so you are not rushing.
Verified travelerFlew with British AirwaysLHR-PITJun 2024
By your own food and have your own music. Upgrade your seat if you have the funds!
WendyFlew with IberiaLHR-PITJul 2024
This is a good service to a smaller gateway airport. It's usually full. This service is why we selected BA. If you've prepaid for your seats be prepared for them to switch the plane configuration and reassign your seats. You'll have to apply for this refund too since it's not automatic. These refunds should be automatic not a chore for you to get your money back, especially when you have selected seats you personally want.
Anne KatherineFlew with IberiaLHR-PHLJul 2024
Need more snacks. As meals not big and need more to eat Also take own water on board as not enough drinks offered from cabin crew - can feel dehydrated during flight
SuzanneFlew with British AirwaysLHR-PITMay 2024
1 - bring a portable battery backup because you can't rely on the outlets at your seat to be working. 2 - download movies/shows to your device, because you can't rely on your headphones or screen to be working. 3 - download any work, as possible, to your laptop, because you can't rely on WiFi to be working.

FAQs - booking Pennsylvania flights

  • How does KAYAK find such low prices on flights from London to Pennsylvania?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Pennsylvania.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Pennsylvania?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London to Pennsylvania is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Pennsylvania?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from London to Pennsylvania with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Pennsylvania?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from London to Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Pennsylvania?

    The cheapest time of day to fly to Pennsylvania is generally in the evening, when retur flights cost £669 on average. Morning departures are around 26% more expensive than evening flights, on average. The most expensive time of day to fly to Pennsylvania is generally in the afternoon, which is peak travel time and where the average cost of a ticket is £849.

Reviews of the top 5 airlines flying from London to Pennsylvania

 
See real verified KAYAK customer reviews for airlines flying from London to Pennsylvania. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to Pennsylvania? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
FinnairOverall score based on 1316 reviews
6.7Food
6.9Entertainment
7.6Boarding
8.1Crew
7.5Comfort
Airline reviews

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

6.0 GoodAnonymous, Jul 2025HEL - DFW
Read more Finnair reviews

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

This was an absolutely exceptional flight. The flight attendants were extremely attentive and very friendly. They seemed to go out of their way to make us comfortable and to make sure that we had everything we needed., We were in business and were very happy with the size and the details for our pods. We would definitely recommend Finnair and will definitely be flying with them again.

We had an excellent trip with Finnair. This was our first time and we’re very pleased. The only issue was with the boarding - it was a little bit confusing and needs a little bit of streamlining.

Crew very lovely. Arrived an hour late due to bad weather. We were given new tickets to an other flight but it could have been organised better, so we did not have to run through the whole airport to.

Flight delayed over an hour. They said they would hold our connection but then did not.

Major problems checking in at Alaska counter. They could not find our booking code because it came from Finnair.

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

The staff were all particularly great. The plane was clean and fresh. The bassinet worked great. It was all very nice.

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

Not good , late, and long. We came home so late and spent so much time flying around and taxiing

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Ok. Get a different kosher caterer. The food was odd.

Food was terrible. Crew was kind but skipped over my row for providing sandwiches and beverages.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

Lost luggage, they need a baggage service representative available all times in Atlanta

I wish Aer Lingus offered free wifi and had power outlets at the seats. Overall, the flight was good. Seat back entertainment had some interesting options. Food and snack options were mediocre at best. I enjoyed the canned red wine.

I had an awful experience at the ticketing agent stand. I had purchased three tickets, one of which I had the maiden name of a passenger on the ticket. They refused to help, assist, and actually delayed our process and had us miss an opportunity to purchase a ticket on the same flight. I was sent through multiple phone calls, none of which helped, and the person at the counter was the person who told me to both call Aer Lingus for help and was the person who said they could not fulfill my request that they were privy to from the beginning. My partner is still stuck in Scotland, racking up thousands of dollars in additional fees and tickets. I am very upset and two of my tickets went unused. I will never be using Aer Lingus ever again and I will continue to complain about them.

This was the most expensive economy flight per minute of flight time ever. But the quality was lacking. Extremely Aer Lingus rude staff at LHR said that the flight from London to Dublin (Ireland) was “NOT international.” Horrified at the colonial and imperial perspective. Seats were dirty with trash in seat pockets. Airline doesn’t clean or care about hygiene and safety.

In business class overhead bins were minuscule. Had to use cabin staff to find a place for my carry-on bag. Boarding process was shambolic, as “passengers who needed assistance in boarding” absorbed an excessive amount of time and attention that Aer Lingus was apparently unprepared for.

Aer Lingus was fabulous.nhowever, Aiirfare Assist who Kayak routes me to to purchase tickets for m was awful. They messed up my reservation so bad that after about six hours on the phone with them over the week before departure, I had been choice but to show up at the airport. The Aer Lingus staff were amazing and got it sorted out but I would recommend not using Airfare Assist.

I had a great experience. I wasn’t sure what to expect but the crew helped me check my bags and made sure I got in the correct line to board. It was a bit of a walk to my gate so arrive early. I would recommend securing a flight that includes checking in your bag if you remotely think your baggage is over 10kg/22lbs. Be safe and upgrade unless you are carrying a backpack or weekend type baggage.

Dublin to Boston was decent. Food and entertainment was included and that was expected for the rate paid.

Flight was on time. Boarding was quick and efficient. Seats were comfortable. Food was fine.

The ease of boarding was good. I wish they had something to eat on the plane.

I like Aer Lingus so that is why I’m writing this critique so they can become better. The boarding gate was too small to board properly. Our seats were toward the back of the plane knowing we would be boarding after business class, we moved to that area after business class boarded. An Aer Lingus employee told us we couldn’t stand there. We explained we were the next group to board and wouldn’t even be able to hear when our boarding was called. She didn’t care and was not very professional. The cabin was freezing. I wouldn’t feed my dog the food. We were over an hour late coming into chicago because of weather which can’t be avoided. I asked the crew if they could make an annoucement for before whose final destination is chicago to wait and allow the people with connecting to deplane first. He said there are a lot of people with connecting flights. He said, it doesn’t matter. Well, yes it does. He could have been more considerate of his passengers.

Horrible almost missed my flight because my 1st flight was delayed. Airline crew is so unprofessional. The people on the plane do whatever they want kids running screaming. Will never fly this airline again Suitcases never arrived

Check in needed to be in person, not nice. Also I won’t do connections in Charlotte again because you need to go through security again and short connections become a problem

It was good but I did not appreciate not being able to check in online

Boarding was odd. Gates switched and had to take a bus to the plane. Luggage got lost. Still waiting on one bag. Flight itself was very nice!

Do Not Fly Iberia. Horrible experience. Iberia changes things at random -like the date of the flight and seat you have bought. After buying my flight, they contacted me and told me I had to return a day later. Then when I was boarding the flight, I discovered they had changed my window seat in a row away from the wing, to an aisle seat in front of the toilet! The worse seat on the plane. But it wasn’t just me- a family was scattered all over the plane. I was able to trade my seat because a father was separated from his son. Unfortunately the seat was the window seat directly over the wing, the loudest seat in the plane. I couldn’t sleep, even with noise cancelling earphones. Also, I ordered gluten free meal-which was tasteless and gave me cramps.

I described my experience in the previous window. I didn't realize that there would be another opportunity for this flight. Please look at my response in the previous window.

I have nothing but great things to say about the crew of the American Airlines flight from Madrid to Dallas. They were fantastic! I do, however, have some disregard for the flight attendant that was late in Dallas, causing us to further delay the boarding of our flight to Portland, and leading to the eventual cancellation of that flight. Because that crew-member was so late, we got caught-up in a weather-related ground stop, eventually causing our pilots to "time-out". So we couldn't get out of Dallas. We would have departed DFW on-time (and before the arrival of the thunderstorm) if not for the lateness of that crew member. The whole time the pilots couldn't tell us whether the flight would be cancelled, and that they couldn't get any information from the airline. By the time we knew the flight was cancelled, all of the flights for the following day were full. So, we didn't even get offered a viable option to get home. The American Airlines customer service desk at DFW was grossly under-staffed. And there were several people who waited in line for four-hours before being helped at that desk. We waited in line for almost 2-hours, until I was able to speak with a customer service agent on the phone (after being on-hold for over an hour). So, once we knew the information about how to get our bag in PDX, and that there weren't any options for flights the next day, we left the line & began searching for another way home. We eventually had to purchase a ticket home on a different airline, in order to get my wife to work on Monday. And we are pursuing a refund of that DFW-PDX leg of the journey. The good news is that the late flight attendant's hair was perfect. And she looked fantastic as she departed the airport & headed back home, while we all hunkered down to sleep in the terminal for the night.

One of the crew members hit me with the car and not even says anything

They need to start flying on time. We lost 2 days of our time because they delayed flight both ways.

As always a terrible experience. AA stole a day from my vacation days planned to be spent with my Family. Response: delays related to weather issues.

Everything about the flight check-in was smooth no line the plane is clean and bathroom

Excellent everywhere but Philly, the most rotten airport in the world.

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

I was put into business class. Wow! My flight attendant was great! The food amazing’

The gate at London Gatwick had confusing signs for the different zones and the staff seemed harried because people didn't know when it was their turn to come to the desk. Plus, with there were too many carry-on bag travelers, myself included. The charge scheme for checking bags is frustrating. If you travel light, you want the freedom to leave as soon as you deplane. When you are forced to gate-check your bag simply because the flight is fully booked, you lose whatever time you'd hoped to save because you're still stuck waiting for your bag to come off the conveyor belt.

Not so good with their baggage handling as they damaged one of my check in luggage

All went well on the flight, not happy of course with having to pay for a seat and in hold luggage of £50

We never made it onto this flight due to BA's lackluster organisation.

The air hostess were good, cheerful, but I didn't like the boarding. My son and I initially bought our flight tickets, making sure it included 1 luggage and a carry on. Tickets were purchased for British airlines, but we were merged with American Airlines. At checking in our languages, we were told, we don't have luggage prepaid so we had to pay extra $125 each and almost £60 on our way back. I think that's unfair.

Economy seats are so small and compacted so close together that comfort is negatively affected, especially on long flights. However that is due to aircraft design, not anything the airline can do about it.

Everything you need to know for your flight from London to Pennsylvania

Cabin class types available on flights to Pennsylvania

Cabin classes available on flights to Pennsylvania. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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