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Cheap flights from London to Philadelphia from £192

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Philadelphia departing on 7/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London to Philadelphia

Cheap return flights

 Logo
14:00 - 11:34LGW-PHL
26h 34m1 stop
 Logo
06:45 - 07:00PHL-LGW
19h 15m1 stop
Sun, 24 Aug - Tue, 23 Sep
JetBlue Logo
12:10 - 21:24LGW-PHL
14h 14m1 stop
JetBlue Logo
18:40 - 09:35PHL-LGW
9h 55m1 stop
£355JetBlue
Find Deal
Wed, 3 Sep - Wed, 17 Sep
Finnair Logo
18:10 - 11:45LHR-PHL
22h 35m1 stop
Finnair Logo
11:10 - 06:55PHL-LHR
14h 45m1 stop
£433Finnair
Find Deal
Tue, 8 Jul - Thu, 7 Aug
British Airways Logo
07:50 - 13:55LHR-PHL
11h 05m1 stop
British Airways Logo
15:35 - 07:00PHL-LHR
10h 25m1 stop
£436British Airways
Find Deal
Wed, 12 Nov - Wed, 19 Nov
Finnair Logo
20:05 - 13:50LHR-PHL
22h 45m1 stop
Finnair Logo
15:35 - 09:05PHL-LHR
12h 30m1 stop
£439Finnair
Find Deal
Tue, 15 Jul - Tue, 29 Jul
British Airways Logo
12:30 - 15:35LHR-PHL
8h 05mdirect
British Airways Logo
17:14 - 07:50PHL-LHR
9h 36m1 stop
£445British Airways
Find Deal
Tue, 2 Sep - Wed, 10 Sep
Iberia Logo
12:30 - 15:25LHR-PHL
7h 55mdirect
Iberia Logo
19:50 - 08:05PHL-LHR
7h 15mdirect
£473Iberia
Find Deal
Mon, 23 Jun - Mon, 30 Jun
Iberia Logo
08:55 - 19:55LHR-PHL
16h 00m1 stop
Iberia Logo
17:31 - 07:50PHL-LHR
9h 19m1 stop
£486Iberia
Find Deal
Mon, 23 Jun - Mon, 30 Jun
Aer Lingus Logo
06:45 - 19:00LCY-PHL
17h 15m1 stop
Aer Lingus Logo
20:30 - 20:50PHL-LCY
19h 20m1 stop
£667Aer Lingus
Find Deal
Thu, 11 Sep - Thu, 18 Sep
Aer Lingus Logo
20:30 - 11:45LCY-PHL
20h 15m1 stop
Aer Lingus Logo
06:08 - 17:30PHL-LCY
30h 22m2 stops
£723Aer Lingus
Find Deal
Tue, 8 Jul - Thu, 7 Aug

JetBlue flights from London to Philadelphia

Our best JetBlue deals on London to Philadelphia flight tickets
JetBlue
3 Sept
LGW12:10London Gatwick
14h 14m
1 stop
PHL21:24Philadelphia
17 Sept
PHL18:40Philadelphia
9h 55m
1 stop
LGW09:35London Gatwick
JetBlue
11 Sept
LGW12:10London Gatwick
14h 14m
1 stop
PHL21:24Philadelphia
18 Sept
PHL18:40Philadelphia
9h 55m
1 stop
LGW09:35London Gatwick
JetBlue
5 Sept
LGW12:10London Gatwick
14h 14m
1 stop
PHL21:24Philadelphia
15 Sept
PHL18:40Philadelphia
9h 55m
1 stop
LGW09:35London Gatwick

British Airways flights from London to Philadelphia

Our best British Airways deals on London to Philadelphia flight tickets
British Airways
12 Nov
LHR07:50London Heathrow
11h 05m
1 stop
PHL13:55Philadelphia
19 Nov
PHL15:35Philadelphia
10h 25m
1 stop
LHR07:00London Heathrow
British Airways
2 Sept
LHR12:30London Heathrow
8h 05m
PHL15:35Philadelphia
10 Sept
PHL17:14Philadelphia
9h 36m
1 stop
LHR07:50London Heathrow
British Airways
2 Sept
LHR10:05London Heathrow
8h 05m
PHL13:10Philadelphia
10 Sept
PHL18:30Philadelphia
7h 10m
LHR06:40London Heathrow

See travel insights to Philadelphia from

How to get the cheapest flight ticket from London to Philadelphia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London and Philadelphia?

What is the cheapest month to fly to Philadelphia?

If you aren’t able to travel during the month of February, then book flights to Philadelphia from London during September instead. Flights to Philadelphia in September, while not as cheap as those in February, still average around £498.

What is the cheapest day to depart on your flight to Philadelphia?

Our data shows that Tuesday is the least expensive day to fly to Philadelphia. Tickets to fly out on this day can be as low as £607. On the other hand, Sunday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £660.

What is the cheapest time of day to depart on your flight to Philadelphia?

The cheapest time of day to fly to Philadelphia is in the afternoon when flights can be purchased for as low as £495. In the morning is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £636 per ticket.

What is the cheapest London to Philadelphia flight route?

Fly from London Heathrow to Philadelphia for the best London - Philadelphia flight prices

How far in advance should I book a flight to Philadelphia?

You are more likely to see cheaper flights to Philadelphia from London when booking 16 weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around £559 when searching 16 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from London for as low as £508 on momondo.

What cabin class options are available on London to Philadelphia flights?

There are 3 cabin classes available to choose from on London to Philadelphia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to Philadelphia flights?

No. A direct flight is the cheapest option for a flight between London to Philadelphia.

How have London to Philadelphia flight prices changed over time?

As of June 2025, prices for London to Philadelphia flights are approximately 4% more expensive when compared to flights at the same time last year.

When to book flights from London to Philadelphia

Are you open to changing your travel dates? Check out the ideal times to fly from London to Philadelphia according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to Philadelphia (LON to PHL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Philadelphia

Best price found

£192

Fastest flight time

7h 55m

Direct flights

Every day

Airports in Philadelphia

1 airport
The best one-way flight to Philadelphia from London in the past 72 hours is £192. The best return flight deal from London to Philadelphia found on momondo in the last 72 hours is £354.
The fastest flight from London to Philadelphia takes 7h 55m
Direct flights go from London to Philadelphia every day.
There is 1 airport near Philadelphia: Philadelphia (PHL)

  • How far is London to Philadelphia by plane?

    London and Philadelphia are 3538.9 mi apart from one another. 7h 55m is a normal flight duration for this route.

  • When did momondo last update prices for flights from London to Philadelphia Airport?

    Prices for flights from London to Philadelphia Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from London to Philadelphia Airport?

  • How old do you have to be to fly from London to Philadelphia Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Philadelphia Airport.

  • What documentation or ID do you need to fly to Philadelphia Airport?

    The travel and health documents you'll need for your trip to Philadelphia Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Philadelphia Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London to Philadelphia?

  • What is the most popular airline from London to Philadelphia?


Best airlines flying from London to Philadelphia

Compare and see reviews for airlines that fly from London to Philadelphia with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom £298Free CancellationRating
7.4
8,790 reviews
Search United Airlines flights
IcelandairPriceFrom £331Free CancellationRating
7.0
499 reviews
Search Icelandair flights
Air CanadaPriceFrom £333Free CancellationRating
7.1
9,539 reviews
Search Air Canada flights
JetBluePriceFrom £350Free CancellationRating
7.3
2,923 reviews
Search JetBlue flights
LufthansaPriceFrom £407Free CancellationRating
6.7
7,139 reviews
Search Lufthansa flights
British AirwaysPriceFrom £427Free CancellationRating
6.6
7,011 reviews
Search British Airways flights
FinnairPriceFrom £439Free CancellationRating
7.6
1,290 reviews
Search Finnair flights
American AirlinesPriceFrom £448Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Virgin AtlanticPriceFrom £458Free CancellationRating
7.4
652 reviews
Search Virgin Atlantic flights
Aer LingusPriceFrom £459Free CancellationRating
7.1
1,118 reviews
Search Aer Lingus flights
  • Finnair Flights From London to Philadelphia

    Finnair flies from London to Philadelphia around 20 times per week, with 1,290 momondo users rating the airline 7.6/10. The cheapest Finnair deal from London to Philadelphia in the last 72 hours was £597 (round-trip), much lower than the average airfare cost of £771 for Finnair flights on this route.

  • American Airlines Flights From London to Philadelphia

    Another popular option for London to Philadelphia flights is American Airlines (7.2/10, 10,000 ratings). American Airlines flies from London to Philadelphia around 20 times per week, with deals starting from £609 round-trip and rising to an average price of around £801.


Travelling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Dover
Newark
Reading
Vineland
King of Prussia
Cape May
Rehoboth Beach
Cherry Hill
Dewey Beach

Why use momondo?

Why should I use momondo to find a flight deal from London to Philadelphia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Philadelphia . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Philadelphia with flexible booking policies on momondo?

Flights from London to Philadelphia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Philadelphia?

momondo provides multiple filters to help you find the best flight to Philadelphia from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Philadelphia right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Philadelphia, momondo offers a useful price alert feature which will track prices for flights to Philadelphia from London and alert you when they change.


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