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Find cheap flights from Philadelphia to the United Kingdom from $179

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to the United Kingdom departing on 10/1. 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
0 bags
Wed 7/10
Wed 7/17

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Best United Kingdom Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

London
London1 stop$545
Edinburgh
Edinburgh1 stop$651
Manchester
Manchester1 stop$606
Birmingham
Birmingham2 stops$591
Belfast
Belfast1 stop$654
Inverness
Inverness1 stop$541
Bristol
Bristol1 stop$897
Aberdeen
Aberdeen1 stop$615
Leeds
Leeds2 stops$666
Liverpool
Liverpool2 stops$862
Cardiff
Cardiff2 stops$1,099

Good to know

Low season

February

High season

June

Cheapest flight

$179
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Philadelphia to London Gatwick Airport

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Philadelphia to the United Kingdom?

    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 Philadelphia to the United Kingdom.

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

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

  • What is the Hacker Fare option on flights from Philadelphia to the United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to the United Kingdom with an airline and back to Philadelphia with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to the United Kingdom?

    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 to the United Kingdom from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to the United Kingdom

  • Looking for a cheap flight? 25% of our users found tickets from Philadelphia to the following destinations at these prices or less: London $683 one-way - $773 round-trip
  • Morning departure is around 3% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Philadelphia to the United Kingdom

Need help choosing which airline to fly with from Philadelphia to the United Kingdom? 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.
7.7
FinnairOverall score based on 1359 reviews
8.2Crew
7.5Comfort
7.8Boarding
7.0Entertainment
6.9Food
Airline reviews

Not great. Flight attendants were aloof, food was mediocre, seats that I paid $150 were given to someone else without any concession. I will probably never use kayak again. Terrible experience from start to finish.

4.0 OkayAnonymous, Jun 2024ORD - MAD
Read more about Finnair reviews

Not great. Flight attendants were aloof, food was mediocre, seats that I paid $150 were given to someone else without any concession. I will probably never use kayak again. Terrible experience from start to finish.

The wine was low quality Finnair label stuff in small bottles and only one small bottle each. Embarassinng. A competing airline served me two generous glasses of a nice South African Shiraz from regular wine bottles, a Beck's beer, and a generous Dewar's White Label on the rocks. Cabin service was good and polite, plane interior was beautiful, but cramped.

All good- I love BA and the professionalism of the crew and pilots.

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

It was listed on my ticket as Finnair but there was no indication that the flight was Finnair. In fact the number was even different. There were no employees there until exactly 2 hours before so we had to wait in line at Iberia and hope

Sorting on line would have been appreciated Onward information on flights missed No ability to get seating arranged before we got to gate Very unfriendly at gate

The flight was Finnair but there was no indications anywhere that the checkin was for Finnair also. There was no one to ask. I think at a minimum they should list the code shares so people don’t stand in the wrong line for an hour.

I booked the flight with Finnair, which made the arrangements for downloading a boarding pass unnecessarily complicated. I wouldn't do that again. Instead I'd book direct with AA.

Flight ok, but me and other two passengers didn’t have connection with the entertainment in our seats. So, no movies, no games, no music… for 9 hours. The crew just told us that there’s nothing they can do but I noticed during the flight that there were empty seats, so they could have offered to us to change seats. Customer service could be better.

Had a nice flight to London on BA will fly with them again in the future

Missed connection from Philadelphia to London because flight from DC was seriously delayed. Was re-routed the next day (had to pay for hotel) to Zurich and was given a main cabin middle seat while I had paid for premium. Great job AA!!!

There were delays on both ends. It made it less than excellent. This plane was great though

So uncomfortable to sit in the tiny space on a long, international. Food was rough. Please, less white flour and processed food.

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Tray table was filthy when I sat down. I needed to have someone come clean it because there was food and stains on it WiFi didn’t work after paying for in flight WiFi Food was terrible and was not filling at all Chicken was rubbery Flight attendant had an attitude, interrupted me and wasn’t able to answer basic questions about the food selection such as “does the chicken have red sauce in it”. If your flight attendants are not going to know what is in the meals so we can make an educated decision based on dietary restrictions, they shouldn’t be on the plane. My 1.5 year old niece was sleeping and dropped her binkie. I went on the ground under the chairs looking for it. It was at that time that she came up to me as I’m CLEARLY on all 4s with a flashlight and said “I need to get by”. I said one moment please I’m getting something from under the seat (while my head was literally under the seat). Her reply was “no you need to move now” and proceeded to almost push me out of the way. I looked up and all I saw was her toes under my eyes. When I looked in front of me, her private parts were inches away from my face. I then made a comment “you couldn’t waited 2 seconds?” and her response was, “no I need to use the bathroom”. I understand that and would never want to be the reason someone couldn’t get to the bathroom but I was under the seat. She could’ve gone around the other way instead of harassing me, basically placing her private parts on my head and borderline pushing me out of the way. You don’t pay (especially this much) for this deplorable experience. This was by far the worst experience I have ever had on American. I will be absolutely thinking twice and thrice about flying American Airlines again. I would rather pay more to fly delta because at least I know their WiFi will work and their flight attendants won’t have a terrible attitude for no reason, nor will they act the way this woman did. Unacceptable.

Great crew. Very comfortable business seats with nice bedding. Good food. We were delayed to let late passengers on the flight, but otherwise great experience.

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

Same basket of unhealthy prepackaged snacks (junk food) which was depleted by the time it got to my row!!

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

The flight got us safely from point a to point b and on time. For a transatlantic flight that isnt nothing. Flight crew was kind and professional. The seats are super uncomfortable (worse than domestic budget airlines) and the cabin was DIRTY.

Great service on the plane and by ground staff. great prices. I was able to change seats on the plane. The allocated seats cannot be changed when checkin in online. They have to be done at the airport if you check in at the airport or on the plane by asking a stewardess / steward.

I fly to the USA every 6wks on Ave and 99% of the time I fly Aer Lingus. If I fly BA I’m always disappointed. My only criticism is the food. I’m vegan and over the last year it’s got slightly better these last couple of flights but on the whole it’s not good! Salad and fruit salad for breakfast and that’s also the starter and desert for the lunch/dinner and the main is usually rice with fried veg 😳the pasta is pretty good though. That’s been the last 2 meals…. Everything else is fantastic.

The flight was half full and I presume that the next few days are even less busy not sure why they are still charging a premium to change a flight.

Are Longus was fine. I booked thru Kayak and was unable to get my business class seat early. Sat next to galley. Crew forgot to wake me for breakfast.

I loved how they arrange boarding (starting with people seated in back and moving to the front). Flight crew was very polite and welcoming. Seating was ok, I felt like there was enough leg space however it is noticeable when the passenger in front of you sets their seat back.

Short flight so not much to rate. Surprised I had to pay for a soda.

Nice to be on a flight that wasn't fully booked so there were only two of us in the three seat row.

The only problem was there are games on the entertaiment system. The guy behind me played poker the entire time and poking the back of my seat. I hope they remove these.

Very good need to offer better choice of food for business

As an advantage member I found the experience very positive

The flight from Amsterdam to Dallas was great, ok food, good service, great entertainment. But Dallas to SF was very tiring because of two hour delay inside the airplane waiting for AA paper work in 99 degrees in the sun. We had no oxygen and the pilot had to ask everyone to blast the AC because it was getting too hot inside the cabin.

Our luggage did not make it with us despite the fact that there was an hour between landing in Madrid (from Granada) and the departure of the plane to Washington DC. We received notifications about this, which is a nice touch, but they were in Spanish and it took us a while to figure out what the message was. Furthermore, the process of filing a report was not intuitive and we have received no e-mail or other form of confirmation that the airline has received our missing luggage reports. Needs improvement!

We left our child’s tablet on our seat 12 B on the plane and we can’t get a hold of anyone to try to get help locating the tablet.

My flight was cancelled after a 7 hour delay. I am awaiting a refund.

Food was low quality as well as quantity; I ordered vegetarian. We waited 35 MINUTES for the first bag to arrive after landing.

Disappointing. Had to pay 70 euros for one checked bag. Transatlantic flight was cramped, not very comfortable

Ability to select seating would be nice. We were family of three and they had us seated back to back and one of us on the other side of the plane??? That is pretty goofy. Especially when tickets were placed two months in advance.

They offered several meals and snacks, the crew was very friendly and kind. There was a broad selection of movies, shows, and games. I was impressed!

I am quite satisfied. The flight was on time and landed early. Staff was friendly.

Economy class has no legroom so if you have the money worth to upgrade! Food was absolutely horrible! The crew was super nice!!!!!

The flight was provided by Aer Lingus and our seats were in a poor condition (15A & 15C). They looked like they needed repairing/replacing and were uncomfortable for such a long flight. Also the arm rests on Aer Lingus planes do not lift more than around 45 degrees, instead of the usual 90 degrees upright, meaning you cannot maximum the space between you & your travel companion so as to be more comfortable for such a long flight.

Very bed boarding, there was overbooked and make a lot of problems and noises

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

First time flying with BA and I will do it again. Staff at airport and on board were very nice and helpful

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

The BA team at Sky Harbor is deplorable, full of unnecessary attitude and poor communication. It seems like every member of the team was looking at another to solve the problem, instead of taking agency to do so themselves. I saw no less than 6 altercations with the same gate agent where he threatened to revoke the passengers boarding pass for asking a wildly reasonable question, something as simple as where the cue to board was. I’ve complained to BA before but it seems this isn’t an issue for them, which is very disappointing

Boarding poor in London,ok in Chicago. Don’t like Heatrow/terminal5

It was very good. We got a late start by about an hour and a half. However I worked rather have that than crash. It was purely mechanical. They had our tickets ready when we came off the plane in London for the next leg. The only mishap was when we got to Lisbon my husbands luggage made or bit mine didn't. All was not lost because I did finally get it 2 days later. I was really pleased that they c made the effort.

Book cheap flights from Philadelphia to the United Kingdom

Recent round-trip flight deals

9/10Tue
1 stop
14h 51mPHL-LGW
9/23Mon
2 stops
29h 12mLGW-PHL
$545
9/23Mon
1 stopJetBlue
12h 05mPHL-LGW
10/1Tue
1 stopJetBlue
14h 25mLGW-PHL
$567
9/22Sun
nonstopAmerican Airlines
7h 05mPHL-LHR
10/4Fri
1 stopAmerican Airlines
11h 30mLHR-PHL
$569
9/22Sun
1 stopAmerican Airlines
9h 25mPHL-LHR
10/4Fri
1 stopAmerican Airlines
11h 30mLHR-PHL
$571
11/27Wed
nonstopBritish Airways
6h 55mPHL-LHR
12/5Thu
1 stopBritish Airways
13h 15mLHR-PHL
$580
9/22Sun
nonstopBritish Airways
7h 05mPHL-LHR
10/7Mon
1 stopBritish Airways
22h 30mLHR-PHL
$588
11/9Sat
nonstopIberia
6h 55mPHL-LHR
11/18Mon
1 stopIberia
23h 25mLHR-PHL
$642
9/12Thu
1 stopAer Lingus
11h 00mPHL-LHR
9/16Mon
1 stopAer Lingus
12h 10mLHR-PHL
$666
9/5Thu
1 stopAer Lingus
11h 45mPHL-LHR
9/9Mon
1 stopAer Lingus
10h 45mLHR-PHL
$671
9/17Tue
1 stopIberia
13h 24mPHL-LHR
9/25Wed
1 stopIberia
12h 35mLHR-PHL
$688

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Recent one-way flight deals

10/1Tue
1 stop
30h 01mPHL-LGW
$179
9/11Wed
1 stop
14h 15mPHL-LGW
$207
7/27Sat
1 stopAer Lingus
18h 10mPHL-EDI
$444
9/23Mon
nonstopIberia
7h 00mPHL-LHR
$456
9/10Tue
1 stopBritish Airways
12h 00mPHL-MAN
$464
9/3Tue
1 stopAer Lingus
17h 55mPHL-EDI
$464
7/9Tue
1 stopBritish Airways
9h 35mPHL-MAN
$467
12/1Sun
2 stopsIberia
16h 45mPHL-LGW
$497
10/4Fri
1 stopAmerican Airlines
11h 55mPHL-MAN
$600
10/4Fri
2 stopsAmerican Airlines
16h 05mPHL-MAN
$602

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Last minute flights from Philadelphia to the United Kingdom

Last minute flight, train and bus deals

6/13Thu
multi-stop
28h 13mPHL-LGW
6/17Mon
multi-stop
20h 06mLGW-PHL
$899
6/13Thu
multi-stop
16h 15mPHL-LGW
6/17Mon
multi-stop
20h 06mLGW-PHL
$911
6/13Thu
multi-stop
16h 15mPHL-LGW
6/16Sun
multi-stop
33h 16mLGW-PHL
$937
6/12Wed
multi-stopAer Lingus
10h 45mPHL-LHR
6/18Tue
multi-stopAer Lingus
11h 00mLHR-PHL
$1,155
6/12Wed
multi-stopBritish Airways
17h 35mPHL-EDI
6/16Sun
multi-stopBritish Airways
23h 55mEDI-PHL
$1,156
6/15Sat
multi-stopBritish Airways
32h 56mPHL-GLA
6/18Tue
multi-stopBritish Airways
24h 00mGLA-PHL
$1,250
6/12Wed
multi-stopAer Lingus
10h 55mPHL-LHR
6/15Sat
multi-stopAer Lingus
27h 00mLHR-PHL
$1,577
6/12Wed
nonstopIberia
7h 00mPHL-LHR
6/14Fri
nonstopIberia
7h 55mLHR-PHL
$3,154
6/11Tue
nonstopAmerican Airlines
7h 10mPHL-LHR
6/18Tue
multi-stopAmerican Airlines
12h 00mLHR-PHL
$3,158
6/13Thu
multi-stopIberia
25h 35mPHL-LGW
6/30Sun
multi-stopIberia
20h 25mLGW-PHL
$3,304

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Philadelphia - United Kingdom Flights

Departure:

Philadelphia (PHL)United States

Return flight deals:

United Kingdom - Philadelphia

Cabin classes:

$5,674
$3,595
$1,554
$650