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Find cheap flights from Philadelphia to the United Kingdom from $175

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 6/5. 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
Fri 6/28
Fri 7/5

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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
London2 stops$587
Edinburgh
Edinburgh1 stop$690
Manchester
Manchester1 stop$630
Birmingham
Birmingham2 stops$615
Belfast
Belfast2 stops$783
Inverness
Inverness2 stops$679
Bristol
Bristol2 stops$1,101
Aberdeen
Aberdeen1 stop$702
Leeds
Leeds2 stops$823
Liverpool
Liverpool2 stops$944

Good to know

Low season

February

High season

June

Cheapest flight

$175
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 27% increase in price.
Flight from Philadelphia to London Luton 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 $702 one-way - $812 round-trip
  • Morning departure is around 6% more expensive 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 1371 reviews
7.5Comfort
8.2Crew
7.0Entertainment
7.8Boarding
6.9Food
Airline reviews

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.

6.0 GoodAnonymous, May 2024TLL - HEL
Read more about Finnair reviews

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.

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

Finnair cancelled my flight 12 hours prior to leaving for Helsinki. They stated there were mechanical problems. I had to scurry around to find a new flight that would meet my needs for arrival in Helsinki. Luckily I was able to find alternate transportation through Lufthansa/United.

I’m very disappointed, to fly into an airplane for 10 straight hours, and not having a TV even though when I put the ticket I was told that I will have entertainment for the TV. Very disappointed.

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.

Flight from PHL to PHX arrived 50 minutes early and a gate was available. First class flight attendant Stephanie was very friendly and polite. Sanitizing wipes should be provided with meals in addition to refresher towels.

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

Great travel. Wonderful experience. Hope to do it again in the near future. God willing

Aer Lingus doesn't have plug ins for devices at each seat. They also did not give me a dairy free meal as requested and confirmed by staff. It was as if I had not requested anything. Otherwise, they were great!

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.

Overall was good except for the seat which, for an 8 hour intercontinental flight, was uncorfortable. For that kind of flight seats should have more space, even for economy seats.

Needed more info on connecting flight. Late flight made very short connection. Lost luggage that we still do not have!

Seats comfortable on economy plus and attendants very helpful. Food was ok. Bathrooms needed servicing.

I paid for premium economy but BA oversold the seats and we ended up being downgraded. Not acceptable given how much we paid for the flight. We were also separated to 2 different areas so not only did we not get the service we paid for, we didn’t even get to sit together. I’m not happy at this treatment by BA because of corporate greed.

Original flight was cancelled - After waiting 2 hours for new take-off times. Then had to stand in line for 3 hours, ending at 2:30 am - to be told, " No hotel rooms anywhere in Dallas". No way for me to get any rest at DFW at that time of night.

Flight was an Iberia Flight on Level but seemed to be outsourced to a 3rd airline - Wamos. Seating pattern was different than when booked, we waited on the JETBRIDGE for 45 minutes to board, food was terrible. Movie options were limited to about 20 and very old, TV shows was limited to about 15 and equally as old. Staff was fine but definitely the "b-team". Landed about 60 minutes early and waited on the runway for 45 minutes - despite that Logan Airport in Boston recently added new gates. Mediocre experience at best.

I liked the friendly crew and desk staff, all very helpful. I was surprised and a little annoyed on my outbound flight from LGW to MCO as I had prepaid and booked my seat, which was all correct at check in on my boarding pass. when I got on the plane someone was in my seat ! I was moved to another seat. The food choice is quite limited and I feel that an option of a muffin for breakfast snack would be welcomed, not everyone wants egg or bacon wrap. The choice of entertainment is good, plenty to keep you busy on a long haul flight. I liked the option offered to have the cabin bag checked into the hold, it saved me as an older, lone traveller lifting my case into the overhead locker or finding there was no space.

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.

Liked that my American Airlines status seamlessly transferred to BA so luggage check was free. Flights were on time, boarding quick. Wish they didn’t assign connecting gate so late at Heathrow.

The entire process was flawless and as expected flying first class. The only thing that I have a complaint on...when first boarding, the plane was EXTREMELY cold; then when we were trying to sleep, it was way too hot - just better regulating (especially trying to sleep) would have made it perfect.

- OK plane. Basic accommodations. OK food. The digital window shade wasn't working.

- OK plane. Basic accommodations. OK food. The digital window shade wasn't working. - Expect to be woken up more than an hour before landing when they start dinging the bell and making announcements and turning on all cabin lights to serve a snack. I would prefer they remain quiet and only serve people who want to wake up.

Better food and more space in the seats. Also when doing the web check in both times I was going in to your site the minute you open it and there is not really many seats to choose only to buy!!!

Book cheap flights from Philadelphia to the United Kingdom

Recent round-trip flight deals

11/9Sat
2 stops
21h 20mPHL-LHR
11/11Mon
2 stops
22h 41mLHR-PHL
$587
10/20Sun
1 stopAmerican Airlines
13h 50mPHL-GLA
10/30Wed
1 stopAmerican Airlines
15h 30mGLA-PHL
$617
11/4Mon
1 stopBritish Airways
12h 00mPHL-MAN
11/11Mon
1 stopBritish Airways
23h 05mMAN-PHL
$636
9/22Sun
nonstopBritish Airways
7h 00mPHL-LHR
10/1Tue
1 stopBritish Airways
13h 00mLHR-PHL
$646
9/17Tue
1 stopAer Lingus
10h 45mPHL-LHR
10/1Tue
1 stopAer Lingus
11h 00mLHR-PHL
$655
9/22Sun
nonstopIberia
7h 00mPHL-LHR
10/2Wed
1 stopIberia
12h 35mLHR-PHL
$659
9/17Tue
1 stopAer Lingus
10h 45mPHL-LHR
10/1Tue
1 stopAer Lingus
12h 25mLHR-PHL
$660
9/22Sun
nonstopFinnair
7h 00mPHL-LHR
10/2Wed
nonstopFinnair
8h 00mLHR-PHL
$677
9/22Sun
nonstopFinnair
7h 00mPHL-LHR
10/7Mon
1 stopFinnair
22h 30mLHR-PHL
$679
8/26Mon
nonstopIberia
6h 55mPHL-LHR
9/17Tue
1 stopIberia
12h 35mLHR-PHL
$709

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Recent one-way flight deals

6/5Wed
2 stops
47h 34mPHL-LTN
$175
7/9Tue
2 stops
34h 55mPHL-EDI
$255
7/27Sat
1 stopAer Lingus
30h 10mPHL-EDI
$449
9/16Mon
1 stopBritish Airways
11h 00mPHL-MAN
$478
9/15Sun
2 stopsAmerican Airlines
16h 20mPHL-MAN
$481
7/9Tue
1 stopAer Lingus
29h 55mPHL-EDI
$486
9/15Sun
1 stopBritish Airways
17h 45mPHL-MAN
$487
7/22Mon
nonstopIberia
7h 15mPHL-LHR
$564
7/29Mon
nonstopAmerican Airlines
7h 15mPHL-LHR
$577
6/18Tue
nonstopIberia
7h 25mPHL-LHR
$600

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Last minute flights from Philadelphia to the United Kingdom

Last minute flight, train and bus deals

6/3Mon
multi-stop
38h 56mPHL-LGW
6/10Mon
multi-stop
27h 25mLGW-PHL
$730
6/3Mon
multi-stop
38h 56mPHL-LGW
6/8Sat
multi-stop
18h 56mLGW-PHL
$769
6/3Mon
multi-stopAmerican Airlines
12h 03mPHL-LHR
6/14Fri
nonstopAmerican Airlines
7h 55mLHR-PHL
$834
6/3Mon
multi-stopAmerican Airlines
10h 20mPHL-LHR
6/14Fri
multi-stopAmerican Airlines
12h 10mLHR-PHL
$842
6/3Mon
multi-stopBritish Airways
11h 30mPHL-LHR
6/10Mon
multi-stopBritish Airways
22h 25mLHR-PHL
$854
6/1Sat
multi-stopBritish Airways
29h 36mPHL-LHR
6/9Sun
multi-stopBritish Airways
12h 00mLHR-PHL
$874
5/30Thu
nonstopIberia
7h 05mPHL-LHR
6/15Sat
nonstopIberia
7h 55mLHR-PHL
$929
6/1Sat
multi-stopIberia
13h 15mPHL-LHR
6/15Sat
nonstopIberia
7h 55mLHR-PHL
$972
6/1Sat
multi-stopAer Lingus
30h 20mPHL-LHR
6/5Wed
multi-stopAer Lingus
11h 00mLHR-PHL
$1,389
6/3Mon
multi-stopAer Lingus
10h 45mPHL-LHR
6/4Tue
multi-stopAer Lingus
11h 00mLHR-PHL
$1,711

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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
$1,796
$652