Cheap Flights from Philadelphia to London
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Flights from Philadelphia to London
Airlines Flying from Philadelphia to London
Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
Flight deals from Philadelphia to London
We've found these cheap flights for you. You can book one-way or return flight tickets.
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Round-trip
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One way
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Cheapest nonstop
PHL 19:407h 15mDirectLHR 07:55Philadelphia - London | Wed, Aug 6 | Iberia
LHR 10:057h 55mDirectPHL 13:00London - Philadelphia | Wed, Aug 13 | Iberia£466 £58320% OFF20% OFF£583 £466 -
PHL 19:407h 15mDirectLHR 07:55Philadelphia - London | Wed, Aug 6 | American Airlines
LHR 10:057h 55mDirectPHL 13:00London - Philadelphia | Wed, Aug 13 | American Airlines£468 £58320% OFF20% OFF£583 £468 -
TTN 06:4522h 15m1 stopsLGW 10:00Philadelphia - London | Sat, Jun 21 | Frontier Airlines
LGW 14:0014h 59m1 stopsTTN 23:59London - Philadelphia | Tue, Jun 24 | Norse Atlantic Airways£455 £58322% OFF22% OFF£583 £455 -
PHL 19:407h 15mDirectLHR 07:55Philadelphia - London | Wed, Aug 6 | American Airlines
LGW 08:0013h 25m1 stopsPHL 16:25London - Philadelphia | Tue, Aug 12 | easyJet£46021% OFF£583 £460
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PHL 19:407h 15mDirectLHR 07:55Philadelphia - London | Wed, Aug 6 | Iberia
LHR 16:3024h 25m1 stopsPHL 11:55London - Philadelphia | Thu, Aug 14 | British Airways£46121% OFF£583 £461
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TTN 08:0021h1 stopsLGW 10:00Philadelphia - London | Wed, Jun 11 | Frontier Airlines
LGW 14:0014h 59m1 stopsTTN 23:59London - Philadelphia | Fri, Jun 13 | Norse Atlantic Airways£46720% OFF£583 £467
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TTN 08:3020h 30m1 stopsLGW 10:00Philadelphia - London | Tue, Jun 17 | Frontier Airlines
LGW 14:0014h 59m1 stopsTTN 23:59London - Philadelphia | Tue, Jun 24 | Norse Atlantic Airways£48617% OFF£583 £486
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PHL 18:357h 5mDirectLHR 06:40Philadelphia - London | Tue, Aug 5 | Iberia
LHR 20:2522h 20m1 stopsPHL 13:45London - Philadelphia | Tue, Aug 12 | British Airways£48916% OFF£583 £489
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PHL 20:309h 40m1 stopsLHR 11:10Philadelphia - London | Tue, Jul 8 | Aer Lingus
LHR 08:5015h 10m1 stopsPHL 19:00London - Philadelphia | Tue, Jul 15 | Aer Lingus£50114% OFF£583 £501 -
PHL 14:5114h 9m1 stopsLGW 10:00Philadelphia - London | Sat, Jul 5 | Frontier Airlines
LGW 14:0016h 9m1 stopsPHL 01:09London - Philadelphia | Fri, Jul 11 | Norse Atlantic Airways£50214% OFF£583 £502
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PHL 17:3012h1 stopsLHR 10:30Philadelphia - London | Sun, Jun 22 | Delta Air Lines
LHR 09:4012h 9m1 stopsPHL 16:49London - Philadelphia | Sun, Jun 29 | Virgin Atlantic£50414% OFF£583 £504 -
TTN 06:4522h 15m1 stopsLGW 10:00Philadelphia - London | Mon, Jun 23 | Frontier Airlines
LGW 14:0014h 59m1 stopsTTN 23:59London - Philadelphia | Tue, Jul 1 | Norse Atlantic Airways£51312% OFF£583 £513
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PHL 13:0017h 25m1 stopsLON Invalid DatePhiladelphia - London | Fri, Jun 13 | Normal Airline
LON 15:006hDirectPHL 16:00London - Philadelphia | Sun, Jun 15 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
PHL 19:557h 10mDirectLHR 08:05Philadelphia - London | Tue, Jul 15 | American Airlines£174 £19712% OFF12% OFF£197 £174
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PHL 19:557h 10mDirectLHR 08:05Philadelphia - London | Sun, Jul 6 | American Airlines£174 £19712% OFF12% OFF£197 £174
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PHL 11:1614h 39m1 stopsLGW 06:55Philadelphia - London | Mon, Jul 14 | Spirit Airlines£143 £19728% OFF28% OFF£197 £143 -
TTN 08:3020h 30m1 stopsLGW 10:00Philadelphia - London | Wed, Jul 16 | Frontier Airlines£15422% OFF£197 £154
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PHL 14:5114h 9m1 stopsLGW 10:00Philadelphia - London | Tue, Jul 8 | Frontier Airlines£15522% OFF£197 £155
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PHL 19:0533h 55m1 stopsLGW 10:00Philadelphia - London | Mon, Jul 21 | Spirit Airlines£15720% OFF£197 £157
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PHL 20:2332h 37m1 stopsLGW 10:00Philadelphia - London | Thu, Jul 31 | Frontier Airlines£16118% OFF£197 £161
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TTN 08:3020h 30m1 stopsLGW 10:00Philadelphia - London | Tue, Jul 15 | Frontier Airlines£16417% OFF£197 £164
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PHL 09:4519h 15m1 stopsLGW 10:00Philadelphia - London | Tue, Jul 22 | Frontier Airlines£16417% OFF£197 £164
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PHL 19:1833h 42m1 stopsLGW 10:00Philadelphia - London | Wed, Jul 2 | Spirit Airlines£16516% OFF£197 £165
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PHL 14:5114h 9m1 stopsLGW 10:00Philadelphia - London | Sat, Jul 19 | Frontier Airlines£16616% OFF£197 £166
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PHL 17:3632h 24m1 stopsLGW 07:00Philadelphia - London | Mon, Aug 4 | Frontier Airlines£16716% OFF£197 £167
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PHL 13:0017h 25m1 stopsLON Invalid DatePhiladelphia - London | Fri, Jun 13 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Flight Information from Philadelphia to London
| Cheapest one-way flight price | £142 |
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| Cheapest return ticket price | £426 |
| Off-season travel month | April |
| Peak season for travel | June |
| Flight distance | 5,706.88km |
| Average flight time | 7 hours 16 minutes |
| Popular airline | Finnair |
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FAQ
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When are flight tickets from Philadelphia (PHL) to London (LON) the cheapest?
Airlines adjust prices for flights from Philadelphia to London based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much are flights from Philadelphia (PHL) to London (LON) cost?
According to Trip.com's data, the lowest price is around £805. -
How long is the flight from Philadelphia (PHL) to London (LON)?
It takes about 7 hours 16 minutes to fly from Philadelphia (PHL) to London (LON). -
What are the most popular airlines that fly from Philadelphia (PHL) to London (LON)?
Airlines with flights from Philadelphia (PHL) to London (LON): Iberia, Malaysia Airlines, Aer Lingus, Finnair, American Airlines and British Airways. -
How many airports in London (LON)?
There are 6 airport(s) in London (LON): London City Airport, London Gatwick Airport, Heathrow Airport, London Luton Airport, London Southend Airport and London Stansted Airport.
How to find a cheap flight from Philadelphia to London
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Philadelphia to London. Book your flights at the right time and save more.
Be flexible with your travel dates to get the cheapest flight from Philadelphia to London.
Simply tap "Date" on the flight search bar to browse through the calendar and check out airfare from Philadelphia to London over the next 6 months in 2025. If you're planning to fly within the next three months, it looks like the most affordable option is on Tue, Jul 15, with one-way flights priced at just £174.
Compare cheap flight deals from Philadelphia to London across hundreds of airlines.
With our extensive search, you can compare prices from over 500 airlines to find the cheapest flight tickets from Philadelphia to London. The cheapest airline for this route is American Airlines.
Set up a Price Alert
By setting up a Price Alert for your journey from Philadelphia to London, you can easily keep an eye on ticket prices without having to check every day.
Don't miss out on cheap flight deals and promo codes from Philadelphia to London.
You can always find the latest offers through Trip.com Deals and Promo Codes for cheap flights. By signing up for a free membership, you'll get access to even more deals for your flights.
Book early or wait until the last minute.
It's usually best to book early. Flight tickets are often cheapest when they're first released, typically about a year before the departure date. So, have a look online as soon as the flights you're interested in become available. If you miss the cheapest time, you might still find some good deals as the departure date gets closer.
Search for flights on the go.
For the best travel flight booking experience, download the Trip.com app. You can search for cheap flights from Philadelphia to London and snag some exclusive deals just for you.
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