Which stopover airport has the shortest connection time from London Heathrow Airport to Philadelphia?

Montreal (YUL) has the shortest average stopover time for this route: 2h 30m.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

What is the most punctual flight time for London to Philadelphia flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Which stopover airport offers the lowest fares from London Heathrow Airport to Philadelphia?

Flights via Boston (BOS) offer the lowest average return price of £485.

How many flights depart from London Heathrow Airport to Philadelphia on average per day?

The number of flights available between London Heathrow Airport and Philadelphia is 10 per day as of January 2026. The most frequent departure time is 13:00, with 63% of daily flights leaving in the afternoon.

How many flights depart from London Heathrow Airport to Philadelphia on average per week?

70 flights are operational weekly from London Heathrow Airport to Philadelphia as of January 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

How often are flights from London to Philadelphia delayed?

Historically, on average around 18% of flights between London and Philadelphia have experienced a delay on any given week. The average delay length over the past 12 months has been 175 minutes.

Which airline has the best punctuality record on London to Philadelphia flights?

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

Which airport is the most popular for stopovers for flights between London Heathrow Airport and Philadelphia?

Dublin (DUB) was the most common stop: 61% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport has the shortest travel time from London Heathrow Airport to Philadelphia?

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 10h 06m.

Which airlines fly to Philadelphia?

Virgin Atlantic, British Airways and Lufthansa are the top three most popular airlines that fly to Philadelphia from London Heathrow Airport according to our data. Virgin Atlantic is the first choice among our users, with 44% of people opting to fly with this airline when travelling to Philadelphia. Keep in mind that there are 20 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from London Heathrow to Philadelphia?

JetBlue is the most popular carrier operating from London Heathrow to Philadelphia

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

Prices for flights from London Heathrow Airport to Philadelphia Airport are updated daily.

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

The number of operators available for flights from London Heathrow Airport to Philadelphia Airport is 9 as of January 2026.

How old do you have to be to fly from London Heathrow Airport 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 Heathrow Airport to Philadelphia Airport.

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

The travel and health documents required for your trip to Philadelphia Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Philadelphia Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£260 Cheap Flights from London Heathrow Airport to Philadelphia in 2026

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Find the cheapest flights from London Heathrow Airport to Philadelphia

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Cheap return flights

Enter your travel dates to find the best prices.

06:50 - 14:50

LHR

PHL

13h 00m

2 stops

15:30 - 07:10

PHL

LHR

10h 40m

1 stop

£422Air Canada

Thu, 12 Feb - Tue, 17 Feb

07:50 - 14:05

LHR

PHL

11h 15m

1 stop

13:53 - 06:15

PHL

LHR

11h 22m

1 stop

£423American Airlines

Wed, 11 Feb - Wed, 3 Jun

06:35 - 18:54

LHR

PHL

17h 19m

2 stops

10:00 - 05:55

PHL

LHR

14h 55m

2 stops

£424United Airlines

Tue, 10 Feb - Wed, 29 Apr

08:30 - 21:09

LHR

PHL

16h 39m

2 stops

19:45 - 10:50

PHL

LHR

11h 05m

1 stop

£424United Airlines

Fri, 13 Mar - Fri, 20 Mar

06:50 - 14:47

LHR

PHL

12h 57m

2 stops

15:30 - 20:35

PHL

LHR

48h 05m

2 stops

£425Air Canada

Sat, 21 Feb - Sat, 7 Mar

06:50 - 14:50

LHR

PHL

13h 00m

2 stops

15:30 - 20:35

PHL

LHR

24h 05m

2 stops

£426Air Canada

Thu, 12 Feb - Thu, 26 Feb

08:15 - 14:55

LHR

PHL

11h 40m

1 stop

14:46 - 08:00

PHL

LHR

12h 14m

1 stop

£427British Airways

Wed, 29 Apr - Tue, 12 May

07:50 - 14:05

LHR

PHL

11h 15m

1 stop

22:00 - 18:55

PHL

LHR

15h 55m

1 stop

£427British Airways

Wed, 11 Feb - Sun, 10 May

06:50 - 14:47

LHR

PHL

12h 57m

2 stops

15:30 - 07:10

PHL

LHR

10h 40m

1 stop

£428Air Canada

Mon, 23 Feb - Sat, 7 Mar

13:30 - 22:46

LHR

PHL

14h 16m

2 stops

10:35 - 07:10

PHL

LHR

15h 35m

2 stops

£429United Airlines

Thu, 12 Feb - Sun, 22 Feb

United Airlines flights from London Heathrow Airport to Philadelphia

Our best United Airlines deals on London Heathrow Airport to Philadelphia flight tickets

United Airlines

10 Feb

LHR06:35London Heathrow

17h 19m

2 stops

PHL18:54Philadelphia

29 Apr

PHL10:00Philadelphia

14h 55m

2 stops

LHR05:55London Heathrow

£424

United Airlines

6 Feb

LHR06:50London Heathrow

19h 46m

2 stops

PHL21:36Philadelphia

17 Feb

PHL20:02Philadelphia

9h 48m

1 stop

LHR10:50London Heathrow

£424

United Airlines

6 Feb

LHR06:50London Heathrow

17h 04m

2 stops

PHL18:54Philadelphia

13 Feb

PHL06:27Philadelphia

19h 13m

2 stops

LHR06:40London Heathrow

£425

JetBlue flights from London Heathrow Airport to Philadelphia

Our best JetBlue deals on London Heathrow Airport to Philadelphia flight tickets

JetBlue

2 Feb

LHR09:20London Heathrow

14h 03m

1 stop

PHL18:23Philadelphia

9 Feb

PHL13:30Philadelphia

12h 25m

1 stop

LHR06:55London Heathrow

£432

JetBlue

23 Feb

LHR09:20London Heathrow

17h 47m

1 stop

PHL22:07Philadelphia

2 Mar

PHL06:00Philadelphia

19h 55m

1 stop

LHR06:55London Heathrow

£435

JetBlue

7 Feb

LHR09:20London Heathrow

14h 18m

1 stop

PHL18:38Philadelphia

17 Feb

PHL15:00Philadelphia

10h 55m

1 stop

LHR06:55London Heathrow

£443

momondo Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Philadelphia that are best for you.

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Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 12/2

06:50-14:50

2 stops13h 00m

Philadelphia

Tue 17/2

15:30-07:10

1 stop10h 40m

£422

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 11/2

07:50-14:05

1 stop11h 15m

Philadelphia

Wed 3/6

13:53-06:15

1 stop11h 22m

£423

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 10/2

06:35-18:54

2 stops17h 19m

Philadelphia

Wed 29/4

10:00-05:55

2 stops14h 55m

£424

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 13/3

08:30-21:09

2 stops16h 39m

Philadelphia

Fri 20/3

19:45-10:50

1 stop11h 05m

£424

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 21/2

06:50-14:47

2 stops12h 57m

Philadelphia

Sat 7/3

15:30-20:35

2 stops48h 05m

£425

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 12/2

06:50-14:50

2 stops13h 00m

Philadelphia

Thu 26/2

15:30-20:35

2 stops24h 05m

£426

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 29/4

08:15-14:55

1 stop11h 40m

Philadelphia

Tue 12/5

14:46-08:00

1 stop12h 14m

£427

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 11/2

07:50-14:05

1 stop11h 15m

Philadelphia

Sun 10/5

22:00-18:55

1 stop15h 55m

£427

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 23/2

06:50-14:47

2 stops12h 57m

Philadelphia

Sat 7/3

15:30-07:10

1 stop10h 40m

£428

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 12/2

13:30-22:46

2 stops14h 16m

Philadelphia

Sun 22/2

10:35-07:10

2 stops15h 35m

£429

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Heathrow Airport 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

Prices

Airlines

Delays

Stopovers

Other information

What is the cheapest month to fly to Philadelphia?

If you aren’t able to travel during the month of March, then book flights to Philadelphia from London Heathrow Airport during February instead. Flights to Philadelphia in February, while not as cheap as those in March, still average around £481.

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

Our data shows that Wednesday is the least expensive day to fly to Philadelphia. Tickets to fly out on this day can be as low as £587. On the other hand, Sunday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £635.

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

The cheapest time of day to fly to Philadelphia is at midday when flights can be purchased for as low as £600. In the morning is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £610 per ticket.

What is the cheapest London Heathrow to Philadelphia flight route?

Fly from London Heathrow to Philadelphia for the best London Heathrow - 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 Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around £546 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from London Heathrow Airport for as low as £493 on momondo.

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

There are 3 cabin classes available to choose from on London Heathrow 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 Heathrow Airport to Philadelphia flights?

You could potentially save up to 19% on your flight if you consider stops on a London Heathrow Airport to Philadelphia flight.

How have London Heathrow Airport to Philadelphia flight prices changed over time?

As of January 2026, prices for London Heathrow Airport to Philadelphia flights are approximately 9% cheaper when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Philadelphia

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

Estimated return price

Cheap London Heathrow Airport to Philadelphia (LHR to PHL) flight deals and tips

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

Best price found	£397
Fastest flight time	7h 45m
Direct flights	Every day
Airports in Philadelphia	1 airport

The best one-way flight to Philadelphia from London Heathrow Airport in the past 72 hours is £397. The best return flight deal from London Heathrow Airport to Philadelphia found on momondo in the last 72 hours is £484.

The fastest flight from London Heathrow Airport to Philadelphia takes 7h 45m

Direct flights go from London Heathrow Airport to Philadelphia every day.

There is 1 airport in Philadelphia. From London Heathrow Airport there are direct flights to Philadelphia (PHL).

Search flight deals

How far is London Heathrow to Philadelphia by plane?
London Heathrow and Philadelphia are 3526.0 mi apart from one another. Flights usually cover this in 7h 45m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Heathrow Airport to Philadelphia Airport?
Prices for flights from London Heathrow Airport to Philadelphia Airport are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Philadelphia Airport?
The number of operators available for flights from London Heathrow Airport to Philadelphia Airport is 9 as of January 2026.
How old do you have to be to fly from London Heathrow Airport 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 Heathrow Airport to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The travel and health documents required for your trip to Philadelphia Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Philadelphia Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from London Heathrow Airport to Philadelphia?
momondo data reveals that the most frequently booked plane model on the route from London Heathrow Airport to Philadelphia is Airbus A350-1000, representing 53.07% of all bookings. The subsequent popular models are Boeing 777 at 10.36%, Boeing 787-9 Dreamliner at 7.25%, and Airbus A330-900neo at 6.94%.
What is the most popular airline from London Heathrow Airport to Philadelphia?
Based on momondo bookings for this flight route, the most popular airline on flight routes from London Heathrow Airport to Philadelphia is British Airways (64% of total bookings). The next most popular airlines are Finnair (12%), Aer Lingus (5%), and Iberia (4%).

Best airlines flying from London Heathrow Airport to Philadelphia

Compare and see reviews for airlines that fly from London Heathrow Airport to Philadelphia with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom £295	Free Cancellation	Rating 7.4 9,209 reviews	Search United Airlines flights
Air Canada	PriceFrom £330	Free Cancellation	Rating 7.1 10,666 reviews	Search Air Canada flights
Lufthansa	PriceFrom £392	Free Cancellation	Rating 6.8 7,749 reviews	Search Lufthansa flights
JetBlue	PriceFrom £409	Free Cancellation	Rating 7.2 2,891 reviews	Search JetBlue flights
British Airways	PriceFrom £429	Free Cancellation	Rating 6.7 7,704 reviews	Search British Airways flights
Finnair	PriceFrom £433	Free Cancellation	Rating 7.6 1,356 reviews	Search Finnair flights
Iberia	PriceFrom £443	Free Cancellation	Rating 7.0 3,099 reviews	Search Iberia flights
American Airlines	PriceFrom £444	Free Cancellation	Rating 7.2 11,201 reviews	Search American Airlines flights
Aer Lingus	PriceFrom £453	Free Cancellation	Rating 7.2 1,442 reviews	Search Aer Lingus flights

Finnair Flights From London Heathrow Airport to Philadelphia
Finnair flies from London Heathrow Airport to Philadelphia around 14 times per week, with 1,356 momondo users rating the airline 7.6/10. The cheapest Finnair deal from London Heathrow Airport to Philadelphia in the last 72 hours was £433 (round-trip), much lower than the average airfare cost of £550 for Finnair flights on this route.
American Airlines Flights From London Heathrow Airport to Philadelphia
£444 is the best American Airlines flight deal from London Heathrow Airport to Philadelphia found on momondo over the last 72 hours. The average American Airlines ticket price found was closer to £576, however, with flight time and availability significantly affecting the price. American Airlines (7.2/10 from 11,201 user reviews) flies into Philadelphia from London Heathrow Airport 14 times in an average week so prices can vary.

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Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Philadelphia for you.

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

momondo does allow users to show only those flights to Philadelphia from London which offer a flexible booking policy as well as other useful filters and features.

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?

Price alerts on flights to Philadelphia from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from London Heathrow Airport to Philadelphia from £259

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United Airlines flights from London Heathrow Airport to Philadelphia

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Our best JetBlue deals on London Heathrow Airport to Philadelphia flight tickets

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Use the filters below to find and compare flights from London Heathrow Airport to Philadelphia that are best for you.

See travel insights to Philadelphia from

How to get the cheapest flight ticket from London Heathrow Airport to Philadelphia

What is the cheapest month to fly to Philadelphia?

If you aren’t able to travel during the month of March, then book flights to Philadelphia from London Heathrow Airport during February instead. Flights to Philadelphia in February, while not as cheap as those in March, still average around £481.

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

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

The cheapest time of day to fly to Philadelphia is at midday when flights can be purchased for as low as £600. In the morning is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £610 per ticket.

What is the cheapest London Heathrow to Philadelphia flight route?

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

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

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

There are 3 cabin classes available to choose from on London Heathrow 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 Heathrow Airport to Philadelphia flights?

You could potentially save up to 19% on your flight if you consider stops on a London Heathrow Airport to Philadelphia flight.

How have London Heathrow Airport to Philadelphia flight prices changed over time?

As of January 2026, prices for London Heathrow Airport to Philadelphia flights are approximately 9% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from London Heathrow to Philadelphia?

JetBlue is the most popular carrier operating from London Heathrow to Philadelphia

Which airlines fly to Philadelphia?

How often are flights from London to Philadelphia delayed?

Historically, on average around 18% of flights between London and Philadelphia have experienced a delay on any given week. The average delay length over the past 12 months has been 175 minutes.

What is the most punctual flight time for London to Philadelphia flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on London to Philadelphia flights?

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

Which airport is the most popular for stopovers for flights between London Heathrow Airport and Philadelphia?

Dublin (DUB) was the most common stop: 61% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from London Heathrow Airport to Philadelphia?

Flights via Boston (BOS) offer the lowest average return price of £485.

Which stopover airport has the shortest travel time from London Heathrow Airport to Philadelphia?

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 10h 06m.

Which stopover airport has the shortest connection time from London Heathrow Airport to Philadelphia?

Montreal (YUL) has the shortest average stopover time for this route: 2h 30m.

How many flights depart from London Heathrow Airport to Philadelphia on average per day?

The number of flights available between London Heathrow Airport and Philadelphia is 10 per day as of January 2026. The most frequent departure time is 13:00, with 63% of daily flights leaving in the afternoon.

How many flights depart from London Heathrow Airport to Philadelphia on average per week?

70 flights are operational weekly from London Heathrow Airport to Philadelphia as of January 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

When to book flights from London Heathrow Airport to Philadelphia

Cheap London Heathrow Airport to Philadelphia (LHR to PHL) flight deals and tips

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

Best price found

Fastest flight time

Direct flights

Airports in Philadelphia

How far is London Heathrow to Philadelphia by plane?

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

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

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

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

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

What is the most popular airline from London Heathrow Airport to Philadelphia?

Best airlines flying from London Heathrow Airport to Philadelphia

Compare and see reviews for airlines that fly from London Heathrow Airport to Philadelphia with momondo

Finnair Flights From London Heathrow Airport to Philadelphia

American Airlines Flights From London Heathrow Airport to Philadelphia

Travelling to a place near Philadelphia?

Why use momondo?

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