£359 Find Cheap Flights from London to Pennsylvania – Compare and Save

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 9/9. 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.
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1 adult, Economy, 0 bags

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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
Philadelphia2 stops£623
Pittsburgh
Pittsburgh1 stop£482
Harrisburg
Harrisburg2 stops£732
State College
State College2 stops£731
Scranton
Scranton2 stops£672
Erie
Erie2 stops£762
Allentown
Allentown1 stop£674
Philadelphia
Philadelphia2 stops£623
Pittsburgh
Pittsburgh1 stop£482
Harrisburg
Harrisburg2 stops£732
State College
State College2 stops£731
Scranton
Scranton2 stops£672
Erie
Erie2 stops£762
Allentown
Allentown1 stop£674

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

Wed, 30 Sep - Wed, 7 Oct
SWISS Logo
09:25 - 16:35
LGW
-
JFK
12h 10m
1 stop
SWISS Logo
16:15 - 08:25
JFK
-
LGW
11h 10m
1 stop
£455SWISS
Thu, 29 Oct - Tue, 3 Nov
Virgin Atlantic Logo
06:20 - 21:27
LHR
-
LGA
19h 07m
2 stops
Virgin Atlantic Logo
16:00 - 06:50
LGA
-
LHR
9h 50m
1 stop
£455Virgin Atlantic
Mon, 21 Sep - Fri, 25 Sep
Multiple Airlines Logo
08:10 - 22:55
STN
-
JFK
19h 45m
1 stop
Multiple Airlines Logo
22:05 - 16:55
JFK
-
STN
13h 50m
1 stop
£455Multiple Airlines
Fri, 22 Jan - Fri, 12 Feb
United Airlines Logo
07:30 - 18:32
LHR
-
LGA
16h 02m
2 stops
United Airlines Logo
13:10 - 07:10
LGA
-
LHR
13h 00m
1 stop
£456United Airlines
Mon, 24 Aug - Mon, 7 Sep
United Airlines Logo
06:50 - 18:45
LHR
-
LGA
16h 55m
2 stops
United Airlines Logo
17:25 - 11:55
LGA
-
LHR
13h 30m
1 stop
£457United Airlines
Mon, 24 Aug - Mon, 31 Aug
Air Canada Logo
14:05 - 19:40
LHR
-
LGA
10h 35m
1 stop
Air Canada Logo
19:05 - 11:50
LGA
-
LHR
11h 45m
1 stop
£461Air Canada
Fri, 4 Sep - Sun, 6 Sep
Air Canada Logo
09:30 - 14:37
LHR
-
LGA
10h 07m
1 stop
Air Canada Logo
15:30 - 06:30
LGA
-
LHR
10h 00m
1 stop
£462Air Canada
Tue, 8 Sep - Tue, 15 Sep
Icelandair Logo
15:40 - 19:15
LGW
-
EWR
32h 35m
1 stop
Icelandair Logo
20:25 - 14:40
EWR
-
LGW
13h 15m
1 stop
£493Icelandair
Mon, 7 Sep - Mon, 14 Sep
Iberia Logo
20:40 - 22:25
LGW
-
EWR
30h 45m
1 stop
Iberia Logo
23:55 - 20:00
EWR
-
LGW
15h 05m
1 stop
£494Iberia
Mon, 7 Sep - Mon, 14 Sep
Iberia Logo
20:40 - 22:25
LGW
-
EWR
30h 45m
1 stop
Iberia Logo
23:55 - 20:00
EWR
-
LGW
15h 05m
1 stop
£495Iberia
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.

How much is a return flight from London to Pennsylvania?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London to Pennsylvania departing in August.

Flight prices are below average for this route right now.

Flights to Pennsylvania from London usually cost between £633 and £892 in August.
The lowest price found in the past 5 days was £623 on Scandinavian Airlines (27 Aug–2 Sept).

What is the cheapest London to Pennsylvania flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Pennsylvania from London found in the last 5 days was to Philadelphia, at £482 return. The most popular route is from London Heathrow Airport (LHR) to Philadelphia (PHL), and the cheapest return airline ticket found on this route in the last 5 days was £482.

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

The average price for all round-trip flights from London to Pennsylvania depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Pennsylvania is generally in the morning, when retur flights cost £665 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 £669.

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 £732 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 September, when tickets cost £539 (return) on average. On the other hand, the most expensive months are July and August, when the average cost of return tickets is £814 and £756 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 Saturday and avoiding Fridays 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 23% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know - Cheap tickets from London to Pennsylvania

Low season

February

Cheapest flight

£359
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (11% more expensive on average)
Flight from London Heathrow 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 Airlines
LHR
-
PHL
Jul 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 Airways
LHR
-
PIT
Jun 2024
By your own food and have your own music. Upgrade your seat if you have the funds!
WendyFlew with Iberia
LHR
-
PIT
Jul 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 Iberia
LHR
-
PHL
Jul 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 Airways
LHR
-
PIT
May 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.

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 1423 reviews
7.7Boarding
7.4Comfort
8.2Crew
6.9Entertainment
6.7Food
Airline reviews

The food was delicious. There has been a major improvement here in the last few years. Excellent, friendly service. An enjoyable experience.

10.0 ExcellentMatti, Jul 2026
HEL - JFK
Read more Finnair reviews

The food was delicious. There has been a major improvement here in the last few years. Excellent, friendly service. An enjoyable experience.

Awful. Delayed for unknown reason. Boarded late, part of a Tight connection ands had to go through customs and immigration. And they lost my bags.

Great if not for the boarding by bus at Heathrow terminal 3. Medieval disappointing time-consuming and very hard on handicapped flyers. It was awful

All reviews good because...flight from BWI to London ,economy seats was miserable. I usually book 1,step up from economy but this would have added 1500 bucks 1 way. Bit the bullet and upgraded for retun flight, otherwise all ratings would have been rock bottom.

There wore nice leather like sits, in my opinion seats lay out bit tight . Crew was great they did averything possible to make averywone comfortable as possible, food was, think worst I ever head on flight, head chicken and yellow rice. Ice cream was a nic treat.

This has been the worst experiencia I have had traveling overall. More than 3 delays, no one answering questions, no one at the AA counter. No one at customer service and after having to change transportation to airport and spend the night at a hotel paid by me, we were delayed inside of aircraft for more than 2 hours!!! Bad experience!!!

Great flight- smooth, nice crew, nice clean aircraft, departed a little late but arrived 10 early.

The flight was surprisingly good, especially given initial experience. BA app is horrible as is their customer service. Online check in was a horrendous experience and when I phoned their customer service number, the live agent with whom I spoke was rude and dismissive. She did helpfully inform me that their IT people were working on a known problem related to online checkin. However, once she delivered that information, she curtly ended the call before I could suggest that since BA was aware of this, it should be posted on the app and online. I grudgingly flew BA this time - have avoided them for years because of past similar serial bad experiences. While this flight was fine, I’ll return to avoiding them in the future given the hassle experienced and rude personnel.

Boarding was a shambles, with no proper line or queue and multiple groups joining at the same time. Overhead space was limited. Seat spacing (width) is not generous. My neighbour was invading my space, before he even spilt his drinks over me (twice!) as he struggled to contain his meal on the table. The main meal was very poor. Choice was simply chicken / turkey - the crew didn't know exactly which - or vegetarian. The chicken meal was really poor quality - uninspiring and tasteless; and very little offering of drinks. Half the crew were friendly, half really need to cheer up.

LHR is always kind of a challenge. British Airlines did a fine job. My tickets were the cheapest so I can’t complain.

Like getting a bus. No great luxury but will get you there

Got us to destination alive, albeit a bit late. Luggage was left behind. No live tracking app available (available on some other airlines). Supposedly going to be delivered in next couple of days.

I had zero issues with the flight. I did have issues with the staff at the airport. We missed out flight due to a delay with another airline. Talking to the staff and trying to get a new flight arranged was challenging. One guy was able to try to help us and got us on a new flight, but other staff was dismissive and clearly let us know it wasn’t their problem. All I kept thinking was… this is why air lingus has such a poor customer service reputation. I will be avoiding this airline in the future.

I liked that I went thru customs in Dublin instead of having to do that in LA.

Baggage fees are deceptive! When I booked this flight, I purchased two tickets and had indicated that I wanted one checked bag. That increased the ticket price by about $100 PER TICKET!. When we went to check in, I was told that I could only check ONE bag, even though I had purchased TWO tickets. I had to pay an additional $50 each way for my wife’s bag. In my opinion, I paid twice for her bag.

Delays resulting in missed connecting flight. Attendant failed to arrange special assistance as promised to get us on connecting flight. Robyn was the particular attendant.

Very good except for the boarding process which was more hectic than it should have been

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.

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

Really helpful staff at the airport and the flight was comfortable with good entertainment options and food service

Plane features were VERY old and outdated. footrest cushion was completely lose, plane felt dirty and a bit grimy. i was in business class. the lead flight attendant, Mary made a few announcements that didn't seem to put the cabin at ease (it didn't necessarily bother me, but could have bothered others). she said "the seat cushions aren't FDA approved, so you have to put them on after we take flight." everyone had already applied the seat cushions, and saying something isn't approved for flight may cause alarm. she also said at one point over the announcement ... "we can't get up because we are too afraid of the jet stream impacts" -- again, not helpful to those who are nervous fliers.

Extremely comfortable airplane, everything looked brand new, how lovely! My seat in Premium Economy was ever so comfortable, I did not suffer the usual backache I suffer when doing the transatlantic flight. It felt like seating in a reclining armchair. I loved the foot rest, did not need to use the portable device I usually carry along with me to replace one. I loved the spaciousness in front of me, and that there were only two seats (Instead of 3 in coach) in the window row, wow what a difference in comfort. Coach seats are always just a little narrow for my hips. The support of the cushions was great, firm and offered good support . It was easy to come out of my aisle seat, although I'm 70. The staff was courteous, both meals were delicious, very carefully prepared, and creative (fruit + cheese for the second meal, instead of the usual bread sandwich)

The plane was up-to-date, and the free wi-fi was very much appreciated! All of the ports functioned well, and the entertainment choices made the flight much more enjoyable. One of the flight attendants was unfriendly, but the flight was enjoyable overall.

Rudest flight attendants ever, waited over 20 for light to be answered and it never was then tried to flag down an attendant who said someone else would come, just needed water to take some medicine Food bad

I was a Wheelchair Assist’ passenger on a London Heathrow to PHL flight yesterday. The process of getting me and my carry-on bag from the ticket counter to the gate was not good at all. It was the worst in my 5 years of experience using this service offered by American. The Philadelphia ‘Wheelchair Assist’ service was, and always has been Excellent! Not so at Heathrow. I was handed off to three different wheelchair drivers; had to sit in a very dingy holding area for 30 minutes while waiting for our gate change announcement; got crammed into a overloaded service vehicle to take me from the holding area to the gate ; was dumped at the end of the line of already-boarding passengers with my heavy carryon and no one helped me up the ramp way at the gate to board the plane. Overall it was a miserable experience!

British Airways is an excellent airline. Comfort, food and airline personnel.

Older airplane with worn out seats. No entertainment system at all. Connecting to Wi-Fi was problematic and hit and miss.

Terrible. Flight got diverted and missed connections. Staff was uninterested in helping us get our connections sorted out

The crew on the aeroplane were absolutely fantastic, very kind, very caring and very supportive. The food was good and the inflight entertainment was really good. When I went to collect my bag from the carousel, I was waiting a long time with the other passengers. Other than that, I am highly satisfied with everything else.

The middle seat was vacant giving extra room. Not good for the airline but good for me.

Plane was delayed multiple times. I would like to request a refund. Was due to arrive Thursday evening ended up arriving Friday morning.

The seats were roomier than other airplanes I’ve been on.

The security line at JFK was one of the longest I’ve ever experienced - probably 45 minutes. I don’t know if JetBlue has control over it, but it detracted from the overall experience. Entertainment had good options, but the volume control was a bit small to tap on and the screen had a fair amount of interference blips. Clearer picture would have been better.

I liked the entertainment on JetBlue, the service from JFK to JAX was terrible at best

Jetblue provided a very good service during the flight, the plane in a very good condition, the crew is professional, everything was on time. That's it!

Purchased through 3rd party vendor which made everything difficult. Unable to check in online. Unable to get flight updates easily, tsa precheck information didn’t carry through, longer time to check in in person. Entertainment looked good but had to purchase conventional headphones to view.

Even though the weather made a lot of flights become cancelled Jet Blue made the flight that was supposed to leave at 9 pm and we left at 12:15 am and I was so grateful- Thanks to the Senior Jet Blue Staff who made those decisions

We were made to wait in the airport for six hours for a flight that was ultimately canceled.

The regular feedback of any changes to our flights. The Jetblue staff were very helpful. Our flights were great. Lots of leg room!

We liked the flight, but not in JFK, not in Gatwick it is no lounge and this was surprising and disappointing. I think by now it is understandable that COVID will not go away and why it should not be business lounge?

Seats were comfortable, but boarding was the worst I've ever seen. Way too much walking to get onboard as we had to go up & down steps several & then bus took us halfway around the airport for boarding & had to board outside after a very long bus rood.

Crew were fantastic and the aircraft was extremely comfortable, but outdated. Headphone jacks were worn out and sound normally only came out of one ear unless positioned just right.

The Britts are wonderful to fly with and the crew were very hospitable. Again, I really wish they had been able to retrieve my carryon bag from baggage claim before the flight so I could be in a less worrisome state of mind, but that's not on them. I completely understand. The window seats with the dimmable windows were very cool!

The seats were comfortable. So many empty seats allowed for stretching out and sleeping. The onboard entertainment was pretty good. The cabin crew were so kind and kept the passengers well- hydrated, and well fed.

When we arrived at the airport - 1st step - printing out your boarding pass - no issue. Not long lines as these machines. 2nd step - processing your bag drop off. There was only one associate there to help 10 kiosks. We had a family in front of us for 20 minutes trying to work on the machine and figure out every step for 4 pieces of luggage. My husband alerted the associate who was able to assist the family. Highly suggest that there are more associates to assist in this process. Besides this issue, security check went very quickly. Our flight was direct to Philadelphia. We had to carry our bags down two flights of steps, then out to the tarmac to a bus, then carry our bags up two flights of stairs to the plane. No one on the flight was expecting that long trek. I could see some people were struggling a bit. All in all - great flight crew, plane was clean and food was great!

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

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

Don't fly thru London Awful and huge U need 4 hrs to transfer cuz u have to tale buses to and fro from airplanes Bad business

I gave a very poor review for th flight over (Pitt to London) due to terrible seat comfort. Different plane on the way back and it was much better. The flight was delayed over an hour taking off but only landed about 15 minutes late.

Entertainment was good. Food was OK. Cab crew was great.

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.