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

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

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

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

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 171 minutes.

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

British Airways is the most popular carrier operating from London Heathrow to Philadelphia

What airlines fly to Philadelphia?

British Airways, American Airlines and United Airlines are the top three most popular airlines that fly to Philadelphia from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 17 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

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

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

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?

As of November 2025, there are 5 operators available to choose from 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?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Philadelphia Airport.

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

The required travel and health documents for your Philadelphia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$493 Cheap Flights from London Heathrow Airport to Philadelphia in 2025/26

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

As of November 2025, there are 70 flights per week flying from London Heathrow Airport to Philadelphia. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

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

10 flights are operational daily from London Heathrow Airport to Philadelphia as of November 2025. The most popular departure time for this route is 10:00AM, with 50% of flights per day taking off at noon.

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9:30 am - 10:29 pmLHR-PHL

17h 59m2 stops

3:20 pm - 10:00 amPHL-LHR

13h 40m1 stop

$688Air Canada

Find Deal

Mon, May 11 - Mon, May 18

6:30 am - 2:05 pmLHR-PHL

12h 35m1 stop

7:50 pm - 7:50 amPHL-LHR

7h 00mnonstop

$690Multiple Airlines

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Mon, Jan 19 - Mon, Jan 26

9:30 am - 10:29 pmLHR-PHL

17h 59m2 stops

9:15 am - 6:35 amPHL-LHR

16h 20m2 stops

$694Air Canada

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Mon, May 11 - Mon, May 18

5:00 pm - 7:43 amLHR-PHL

19h 43m2 stops

8:33 am - 9:30 amPHL-LHR

19h 57m1 stop

$695Finnair

Find Deal

Wed, Dec 10 - Wed, Dec 17

11:30 am - 2:47 pmLHR-PHL

32h 17m2 stops

4:05 pm - 8:35 pmPHL-LHR

47h 30m2 stops

$696United Airlines

Find Deal

Sun, Jan 11 - Sat, Feb 21

9:00 am - 3:49 pmLHR-PHL

35h 49m2 stops

3:01 pm - 11:15 amPHL-LHR

15h 14m2 stops

$697United Airlines

Find Deal

Thu, Jan 8 - Thu, Jan 15

10:05 am - 1:05 pmLHR-PHL

8h 00mnonstop

5:30 pm - 8:05 amPHL-LHR

9h 35m1 stop

$700Multiple Airlines

Find Deal

Wed, Dec 10 - Wed, Dec 17

9:15 am - 12:15 pmLHR-PHL

8h 00mnonstop

7:40 pm - 7:50 amPHL-LHR

7h 10mnonstop

$702Finnair

Find Deal

Wed, Apr 22 - Thu, May 7

9:00 am - 10:46 pmLHR-PHL

18h 46m2 stops

5:40 pm - 4:50 pmPHL-LHR

18h 10m1 stop

$703United Airlines

Find Deal

Thu, Jan 8 - Thu, Jan 15

9:00 am - 10:46 pmLHR-PHL

18h 46m2 stops

7:50 am - 6:40 pmPHL-LHR

29h 50m2 stops

$704Multiple Airlines

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Thu, Jan 8 - Thu, Jan 15

Finnair flights from London Heathrow Airport to Philadelphia

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

Finnair

Dec 10

LHR5:00 pmLondon Heathrow

19h 43m

2 stops

PHL7:43 amPhiladelphia

Dec 17

PHL8:33 amPhiladelphia

19h 57m

1 stop

LHR9:30 amLondon Heathrow

$695

Find similar

Finnair

Apr 22

LHR9:15 amLondon Heathrow

8h 00m

PHL12:15 pmPhiladelphia

May 7

PHL7:40 pmPhiladelphia

7h 10m

LHR7:50 amLondon Heathrow

$702

Find similar

Finnair

Jan 22

LHR10:15 amLondon Heathrow

8h 15m

PHL1:30 pmPhiladelphia

Jan 25

PHL7:50 pmPhiladelphia

7h 00m

LHR7:50 amLondon Heathrow

$711

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United Airlines flights from London Heathrow Airport to Philadelphia

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

United Airlines

Jan 11

LHR11:30 amLondon Heathrow

32h 17m

2 stops

PHL2:47 pmPhiladelphia

Feb 21

PHL4:05 pmPhiladelphia

47h 30m

2 stops

LHR8:35 pmLondon Heathrow

$696

Find similar

United Airlines

Jan 8

LHR9:00 amLondon Heathrow

35h 49m

2 stops

PHL3:49 pmPhiladelphia

Jan 15

PHL3:01 pmPhiladelphia

15h 14m

2 stops

LHR11:15 amLondon Heathrow

$697

Find similar

United Airlines

Jan 8

LHR9:00 amLondon Heathrow

18h 46m

2 stops

PHL10:46 pmPhiladelphia

Jan 15

PHL5:40 pmPhiladelphia

18h 10m

1 stop

LHR4:50 pmLondon Heathrow

$703

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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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Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 5/11

9:30 am-10:29 pm

2 stops17h 59m

Philadelphia

Mon 5/18

3:20 pm-10:00 am

1 stop13h 40m

$688

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 1/19

6:30 am-2:05 pm

1 stop12h 35m

Philadelphia

Mon 1/26

7:50 pm-7:50 am

Nonstop7h 00m

$690

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 5/11

9:30 am-10:29 pm

2 stops17h 59m

Philadelphia

Mon 5/18

9:15 am-6:35 am

2 stops16h 20m

$694

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 12/10

5:00 pm-7:43 am

2 stops19h 43m

Philadelphia

Wed 12/17

8:33 am-9:30 am

1 stop19h 57m

$695

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 1/11

11:30 am-2:47 pm

2 stops32h 17m

Philadelphia

Sat 2/21

4:05 pm-8:35 pm

2 stops47h 30m

$696

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 1/8

9:00 am-3:49 pm

2 stops35h 49m

Philadelphia

Thu 1/15

3:01 pm-11:15 am

2 stops15h 14m

$697

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 12/10

10:05 am-1:05 pm

Nonstop8h 00m

Philadelphia

Wed 12/17

5:30 pm-8:05 am

1 stop9h 35m

$700

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 4/22

9:15 am-12:15 pm

Nonstop8h 00m

Philadelphia

Thu 5/7

7:40 pm-7:50 am

Nonstop7h 10m

$702

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 1/8

9:00 am-10:46 pm

2 stops18h 46m

Philadelphia

Thu 1/15

5:40 pm-4:50 pm

1 stop18h 10m

$703

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 1/8

9:00 am-10:46 pm

2 stops18h 46m

Philadelphia

Thu 1/15

7:50 am-6:40 pm

2 stops29h 50m

$704

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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

Other information

What is the cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from London Heathrow Airport is in March. Flight prices, which tend to average around $635, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Philadelphia, with average flight prices from London Heathrow Airport averaging around $671.

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

The cheapest day to depart from London Heathrow Airport to Philadelphia is on a Tuesday. Travelers who choose to depart for Philadelphia on a Tuesday will often find tickets for as low as $766. On the other hand, Monday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $890.

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

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from London Heathrow Airport to Philadelphia in the evening for as low as $704. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is in the morning when prices are around $820.

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 $759 when searching weeks out. 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 $673 on momondo.

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

There are 4 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 6% 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 November 2025, prices for London Heathrow Airport to Philadelphia flights are approximately 8% 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 round-trip 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	$644
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 $644. The best round-trip flight deal from London Heathrow Airport to Philadelphia found on momondo in the last 72 hours is $703.

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 near Philadelphia: Philadelphia (PHL)

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How far is London Heathrow to Philadelphia by plane?
The straight-line distance from London Heathrow to Philadelphia is 3526.0 mi. By plane, this route typically takes 7h 55m.
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?
As of November 2025, there are 5 operators available to choose from 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?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The required travel and health documents for your Philadelphia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from London Heathrow Airport to Philadelphia?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to Philadelphia is Airbus A350-1000 (63.47% of total bookings). The next most popular plane models are Boeing 777 (5.38%), Airbus A319 (5.24%), and Airbus A330-900neo (3.74%).
What is the most popular airline from London Heathrow Airport to Philadelphia?
Based on momondo bookings for flights between London Heathrow Airport and Philadelphia, the leading airline is British Airways, making up 59% of the total bookings. Other popular airlines include American Airlines with 20%, Aer Lingus with 10%, and Iberia with 6%.

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
Iberia	PriceFrom $559	Free Cancellation	Rating 7.0 3,036 reviews	Search Iberia flights
American Airlines	PriceFrom $597	Free Cancellation	Rating 7.2 11,039 reviews	Search American Airlines flights
British Airways	PriceFrom $618	Free Cancellation	Rating 6.7 7,539 reviews	Search British Airways flights
Finnair	PriceFrom $642	Free Cancellation	Rating 7.6 1,334 reviews	Search Finnair flights
Aer Lingus	PriceFrom $670	Free Cancellation	Rating 7.2 1,382 reviews	Search Aer Lingus flights

Finnair Flights From London Heathrow Airport to Philadelphia
The lowest priced Finnair flight from London Heathrow Airport to Philadelphia from the last 72 hours was $642. Generally, Finnair has 14 flights on this route every week with an average price of $767. Finnair is rated 7.6/10 by our users.
American Airlines Flights From London Heathrow Airport to Philadelphia
American Airlines (7.2/10 from 11,039 reviews) operates around 14 flights from London Heathrow Airport to Philadelphia in any given week. The average American Airlines airfare for this route is around $814, with deals from around $597 rare but found on momondo. Referenced prices are for round-trip London Heathrow Airport to Philadelphia flight searches in the last 72 hours.

Wildwood

Cape May

Rehoboth Beach

Ocean City

Wildwood Crest

King of Prussia

Cherry Hill

Dewey Beach

Newark

Reading

North Wildwood

Avalon

Dover

Lewes

Stone Harbor

Essington

Vineland

Pottstown

Somers Point

Elkton

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?

All flight searches from London to Philadelphia on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Philadelphia.

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

Yes. momondo can track prices for London to Philadelphia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from London Heathrow Airport to Philadelphia from $493

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

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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

What is the cheapest month to fly to Philadelphia?

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?

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 4 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 6% 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 November 2025, prices for London Heathrow Airport to Philadelphia flights are approximately 8% cheaper when compared to flights at the same time last year.

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

British Airways is the most popular carrier operating from London Heathrow to Philadelphia

What 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 171 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 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 which experiences the fewest number of 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 least number of delays on this route over the last 12 months; with about 16% of their flights experiencing any sort of delay.

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

10 flights are operational daily from London Heathrow Airport to Philadelphia as of November 2025. The most popular departure time for this route is 10:00AM, with 50% of flights per day taking off at noon.

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

As of November 2025, there are 70 flights per week flying from London Heathrow Airport to Philadelphia. The most common day of the week flights depart is Mon, with 14% of flights 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

Traveling to a place near Philadelphia?

Why use momondo?

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

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

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

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

An easier way to manage your Philadelphia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Pennsylvania