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

58 flights are operational weekly from London Heathrow Airport to Philadelphia as of December 2025. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

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. Thursday has historically seen more delays on average compared to the rest of the week.

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 42% 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.

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 15% of their flights experiencing any sort of delay.

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.

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 8 per day as of December 2025. The most frequent departure time is 10:00, with 50% of daily flights leaving at midday.

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

Flights via Boston (BOS) offer the lowest average return price of £498.

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.

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

Dublin (DUB) was the most common stop: 65% of momondo users choosing one-stop flights on this route connected there.

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

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

How often are flights from London to Philadelphia delayed?

Historically, on average around 17% 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 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.

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 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.

£286 Cheap Flights from London Heathrow Airport to Philadelphia in 2025/26

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13:25 - 22:46

LHR

PHL

38h 21m2 stops

16:35 - 13:00

PHL

LHR

15h 25m2 stops

£530Air Canada

Mon, 12 Jan - Mon, 19 Jan

17:10 - 21:36

LHR

PHL

33h 26m2 stops

13:10 - 11:15

PHL

LHR

17h 05m2 stops

£531SWISS

Mon, 19 Jan - Mon, 26 Jan

08:15 - 15:35

LHR

PHL

12h 20m1 stop

21:25 - 14:50

PHL

LHR

12h 25m1 stop

£532American Airlines

Mon, 29 Dec - Mon, 12 Jan

18:05 - 12:05

LHR

PHL

23h 00m1 stop

21:05 - 10:05

PHL

LHR

32h 00m1 stop

£532American Airlines

Fri, 12 Jun - Sun, 28 Jun

09:00 - 22:46

LHR

PHL

18h 46m2 stops

15:30 - 07:10

PHL

LHR

10h 40m1 stop

£533Air Canada

Thu, 22 Jan - Mon, 26 Jan

08:15 - 15:35

LHR

PHL

12h 20m1 stop

18:35 - 06:35

PHL

LHR

7h 00mdirect

£535American Airlines

Mon, 29 Dec - Mon, 12 Jan

13:25 - 15:24

LHR

PHL

30h 59m2 stops

15:30 - 07:10

PHL

LHR

10h 40m1 stop

£535Air Canada

Fri, 6 Feb - Mon, 16 Feb

09:20 - 19:25

LHR

PHL

14h 05m1 stop

18:25 - 17:45

PHL

LHR

18h 20m2 stops

£536Multiple Airlines

Tue, 17 Mar - Tue, 7 Apr

20:35 - 15:00

LHR

PHL

23h 25m1 stop

18:35 - 11:15

PHL

LHR

11h 40m1 stop

£537American Airlines

Sun, 14 Jun - Fri, 26 Jun

13:25 - 15:24

LHR

PHL

30h 59m2 stops

12:55 - 08:30

PHL

LHR

14h 35m2 stops

£538Air Canada

Thu, 12 Feb - Thu, 26 Feb

Air Canada flights from London Heathrow Airport to Philadelphia

Our best Air Canada deals on London Heathrow Airport to Philadelphia flight tickets

Air Canada

12 Jan

LHR13:25London Heathrow

38h 21m

2 stops

PHL22:46Philadelphia

26 Jan

PHL16:35Philadelphia

15h 25m

2 stops

LHR13:00London Heathrow

£530

Find similar

Air Canada

22 Jan

LHR09:00London Heathrow

18h 46m

2 stops

PHL22:46Philadelphia

26 Jan

PHL15:30Philadelphia

10h 40m

1 stop

LHR07:10London Heathrow

£533

Find similar

Air Canada

6 Feb

LHR13:25London Heathrow

30h 59m

2 stops

PHL15:24Philadelphia

16 Feb

PHL15:30Philadelphia

10h 40m

1 stop

LHR07:10London Heathrow

£535

Find similar

American Airlines flights from London Heathrow Airport to Philadelphia

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

American Airlines

29 Dec

LHR08:15London Heathrow

12h 20m

1 stop

PHL15:35Philadelphia

12 Jan

PHL21:25Philadelphia

12h 25m

1 stop

LHR14:50London Heathrow

£532

Find similar

American Airlines

12 Jun

LHR18:05London Heathrow

23h 00m

1 stop

PHL12:05Philadelphia

28 Jun

PHL21:05Philadelphia

32h 00m

1 stop

LHR10:05London Heathrow

£532

Find similar

American Airlines

29 Dec

LHR08:15London Heathrow

12h 20m

1 stop

PHL15:35Philadelphia

12 Jan

PHL18:35Philadelphia

7h 00m

LHR06:35London Heathrow

£535

Find similar

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

Mon 12/1

13:25-22:46

2 stops38h 21m

Philadelphia

Mon 19/1

16:35-13:00

2 stops15h 25m

£530

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 19/1

17:10-21:36

2 stops33h 26m

Philadelphia

Mon 26/1

13:10-11:15

2 stops17h 05m

£531

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 29/12

08:15-15:35

1 stop12h 20m

Philadelphia

Mon 12/1

21:25-14:50

1 stop12h 25m

£532

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 12/6

18:05-12:05

1 stop23h 00m

Philadelphia

Sun 28/6

21:05-10:05

1 stop32h 00m

£532

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 22/1

09:00-22:46

2 stops18h 46m

Philadelphia

Mon 26/1

15:30-07:10

1 stop10h 40m

£533

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 29/12

08:15-15:35

1 stop12h 20m

Philadelphia

Mon 12/1

18:35-06:35

Nonstop7h 00m

£535

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 6/2

13:25-15:24

2 stops30h 59m

Philadelphia

Mon 16/2

15:30-07:10

1 stop10h 40m

£535

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 17/3

09:20-19:25

1 stop14h 05m

Philadelphia

Tue 7/4

18:25-17:45

2 stops18h 20m

£536

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 14/6

20:35-15:00

1 stop23h 25m

Philadelphia

Fri 26/6

18:35-11:15

1 stop11h 40m

£537

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 12/2

13:25-15:24

2 stops30h 59m

Philadelphia

Thu 26/2

12:55-08:30

2 stops14h 35m

£538

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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 £499.

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 £599. 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 £648.

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 £503. In the morning is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £625 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 £566 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 £513 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 21% 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 December 2025, prices for London Heathrow Airport to Philadelphia flights are approximately 29% 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	£429
Fastest flight time	7h 55m
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 £429. The best return flight deal from London Heathrow Airport to Philadelphia found on momondo in the last 72 hours is £567.

The fastest flight from London Heathrow Airport to Philadelphia takes 7h 55m

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).

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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 55m, 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 December 2025.
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 56.70% of all bookings. The subsequent popular models are Boeing 777 at 8.31%, Boeing 787-9 Dreamliner at 5.54%, and Airbus A330-900neo at 5.37%.
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 (14%), Aer Lingus (5%), and Iberia (5%).

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 £303	Free Cancellation	Rating 7.4 9,093 reviews	Search United Airlines flights
Air Canada	PriceFrom £339	Free Cancellation	Rating 7.1 10,534 reviews	Search Air Canada flights
JetBlue	PriceFrom £402	Free Cancellation	Rating 7.2 2,897 reviews	Search JetBlue flights
Lufthansa	PriceFrom £403	Free Cancellation	Rating 6.8 7,635 reviews	Search Lufthansa flights
British Airways	PriceFrom £438	Free Cancellation	Rating 6.7 7,585 reviews	Search British Airways flights
Finnair	PriceFrom £447	Free Cancellation	Rating 7.6 1,338 reviews	Search Finnair flights
American Airlines	PriceFrom £454	Free Cancellation	Rating 7.2 11,055 reviews	Search American Airlines flights
Iberia	PriceFrom £455	Free Cancellation	Rating 7.0 3,053 reviews	Search Iberia flights
Aer Lingus	PriceFrom £465	Free Cancellation	Rating 7.2 1,397 reviews	Search Aer Lingus flights

Finnair Flights From London Heathrow Airport to Philadelphia
Finnair flies from London Heathrow Airport to Philadelphia around 9 times per week, with 1,338 momondo users rating the airline 7.6/10. The cheapest Finnair deal from London Heathrow Airport to Philadelphia in the last 72 hours was £447 (round-trip), much lower than the average airfare cost of £557 for Finnair flights on this route.
American Airlines Flights From London Heathrow Airport to Philadelphia
£454 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 £600, however, with flight time and availability significantly affecting the price. American Airlines (7.2/10 from 11,055 user reviews) flies into Philadelphia from London Heathrow Airport 9 times in an average week so prices can vary.

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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?

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Cheap flights from London Heathrow Airport to Philadelphia from £286

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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 £499.

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 in the afternoon when flights can be purchased for as low as £503. In the morning is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £625 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 21% 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 December 2025, prices for London Heathrow Airport to Philadelphia flights are approximately 29% 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 17% 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. Thursday 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 15% 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: 65% 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 £498.

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 8 per day as of December 2025. The most frequent departure time is 10:00, with 50% of daily flights leaving at midday.

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

58 flights are operational weekly from London Heathrow Airport to Philadelphia as of December 2025. The most popular departure day for this route is Mon, with 17% 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?