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

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

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.

What airlines fly to Philadelphia?

British Airways, United Airlines and American 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 56% 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.

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 in the early afternoon have, in the past, seen delays more frequently in comparison.

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 15% of their flights experiencing any sort of delay.

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 January 2026, 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.

$287 Cheap Flights from London Heathrow Airport to Philadelphia in 2026

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

As of January 2026, 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.

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Find the cheapest flights from London Heathrow Airport to Philadelphia

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:50 am - 2:05 pm

LHR

PHL

11h 15m1 stop

6:35 pm - 6:35 am

PHL

LHR

7h 00mnonstop

$620American Airlines

Thu, Feb 5 - Thu, Feb 12

10:50 am - 10:43 pm

LHR

PHL

16h 53m2 stops

3:25 pm - 10:00 am

PHL

LHR

13h 35m1 stop

$621Multiple Airlines

Wed, Apr 29 - Mon, May 4

6:05 am - 3:35 pm

LHR

PHL

14h 30m1 stop

7:50 pm - 7:50 am

PHL

LHR

7h 00mnonstop

$622Iberia

Mon, Jan 26 - Mon, Feb 2

10:15 am - 1:30 pm

LHR

PHL

8h 15mnonstop

7:50 pm - 7:50 am

PHL

LHR

7h 00mnonstop

$624American Airlines

Mon, Jan 26 - Mon, Feb 2

10:15 am - 1:30 pm

LHR

PHL

8h 15mnonstop

7:50 pm - 7:50 am

PHL

LHR

7h 00mnonstop

$625Finnair

Mon, Jan 19 - Mon, Jan 26

7:50 am - 5:00 pm

LHR

PHL

13h 10m1 stop

8:40 pm - 7:50 am

PHL

LHR

7h 10mnonstop

$626British Airways

Fri, Mar 13 - Mon, Mar 16

9:20 am - 6:23 pm

LHR

PHL

14h 03m1 stop

1:30 pm - 6:55 am

PHL

LHR

12h 25m1 stop

$627JetBlue

Tue, Jan 20 - Fri, Jan 23

10:15 am - 1:15 pm

LHR

PHL

8h 00mnonstop

6:35 pm - 6:35 am

PHL

LHR

7h 00mnonstop

$628British Airways

Thu, Feb 19 - Thu, Feb 26

10:15 am - 1:15 pm

LHR

PHL

8h 00mnonstop

6:35 pm - 6:35 am

PHL

LHR

7h 00mnonstop

$629Finnair

Thu, Feb 26 - Wed, Mar 4

8:40 am - 10:12 pm

LHR

PHL

18h 32m2 stops

5:30 pm - 12:05 pm

PHL

LHR

13h 35m2 stops

$630Delta

Wed, Apr 29 - Mon, May 4

Iberia flights from London Heathrow Airport to Philadelphia

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

Iberia

Jan 26

LHR6:05 amLondon Heathrow

14h 30m

1 stop

PHL3:35 pmPhiladelphia

Feb 2

PHL7:50 pmPhiladelphia

7h 00m

LHR7:50 amLondon Heathrow

$622

Iberia

Jan 19

LHR7:40 pmLondon Heathrow

23h 25m

2 stops

PHL2:05 pmPhiladelphia

Jan 26

PHL1:49 pmPhiladelphia

12h 11m

1 stop

LHR7:00 amLondon Heathrow

$638

Iberia

Jan 19

LHR7:40 pmLondon Heathrow

23h 25m

2 stops

PHL2:05 pmPhiladelphia

Jan 26

PHL1:49 pmPhiladelphia

12h 11m

1 stop

LHR7:00 amLondon Heathrow

$657

Finnair flights from London Heathrow Airport to Philadelphia

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

Finnair

Jan 19

LHR10:15 amLondon Heathrow

8h 15m

PHL1:30 pmPhiladelphia

Jan 26

PHL7:50 pmPhiladelphia

7h 00m

LHR7:50 amLondon Heathrow

$625

Finnair

Feb 26

LHR10:15 amLondon Heathrow

8h 00m

PHL1:15 pmPhiladelphia

Mar 4

PHL6:35 pmPhiladelphia

7h 00m

LHR6:35 amLondon Heathrow

$629

Finnair

Feb 12

LHR10:15 amLondon Heathrow

8h 00m

PHL1:15 pmPhiladelphia

Feb 26

PHL6:35 pmPhiladelphia

7h 00m

LHR6:35 amLondon Heathrow

$644

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 2/5

7:50 am-2:05 pm

1 stop11h 15m

Philadelphia

Thu 2/12

6:35 pm-6:35 am

Nonstop7h 00m

$620

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 4/29

10:50 am-10:43 pm

2 stops16h 53m

Philadelphia

Mon 5/4

3:25 pm-10:00 am

1 stop13h 35m

$621

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 1/26

6:05 am-3:35 pm

1 stop14h 30m

Philadelphia

Mon 2/2

7:50 pm-7:50 am

Nonstop7h 00m

$622

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 1/26

10:15 am-1:30 pm

Nonstop8h 15m

Philadelphia

Mon 2/2

7:50 pm-7:50 am

Nonstop7h 00m

$624

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 1/19

10:15 am-1:30 pm

Nonstop8h 15m

Philadelphia

Mon 1/26

7:50 pm-7:50 am

Nonstop7h 00m

$625

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 3/13

7:50 am-5:00 pm

1 stop13h 10m

Philadelphia

Mon 3/16

8:40 pm-7:50 am

Nonstop7h 10m

$626

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 1/20

9:20 am-6:23 pm

1 stop14h 03m

Philadelphia

Fri 1/23

1:30 pm-6:55 am

1 stop12h 25m

$627

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 2/19

10:15 am-1:15 pm

Nonstop8h 00m

Philadelphia

Thu 2/26

6:35 pm-6:35 am

Nonstop7h 00m

$628

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 2/26

10:15 am-1:15 pm

Nonstop8h 00m

Philadelphia

Wed 3/4

6:35 pm-6:35 am

Nonstop7h 00m

$629

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 4/29

8:40 am-10:12 pm

2 stops18h 32m

Philadelphia

Mon 5/4

5:30 pm-12:05 pm

2 stops13h 35m

$630

Flights are sorted by cheapest round-trip 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

Other information

What is the cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from London Heathrow Airport is in February. Flight prices, which tend to average around $641, are often lower during this time because this is during the off-season. The month of March is another great option to travel to Philadelphia, with average flight prices from London Heathrow Airport averaging around $650.

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 Thursday. Travelers who choose to depart for Philadelphia on a Thursday will often find tickets for as low as $771. 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 travelers. As a result, prices tend to be around $903.

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 at noon. momondo users have found flights departing from London Heathrow Airport to Philadelphia at noon for as low as $801. 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 $824.

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 $754 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 $671 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?

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

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 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	$745
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 $745. The best round-trip flight deal from London Heathrow Airport to Philadelphia found on momondo in the last 72 hours is $739.

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?
The straight-line distance from London Heathrow to Philadelphia is 3526.0 mi. By plane, this route typically takes 7h 45m.
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 January 2026, 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 (52.22% of total bookings). The next most popular plane models are Boeing 777 (10.80%), Boeing 787-9 Dreamliner (7.51%), and Airbus A330-900neo (5.33%).
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 61% of the total bookings. Other popular airlines include American Airlines with 18%, Aer Lingus with 10%, and Finnair 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 3,079 reviews	Search Iberia flights
American Airlines	PriceFrom $592	Free Cancellation	Rating 7.2 11,097 reviews	Search American Airlines flights
British Airways	PriceFrom $617	Free Cancellation	Rating 6.7 7,659 reviews	Search British Airways flights
Finnair	PriceFrom $642	Free Cancellation	Rating 7.6 1,346 reviews	Search Finnair flights
Aer Lingus	PriceFrom $670	Free Cancellation	Rating 7.2 1,429 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 11,097 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 $592 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

Wildwood Crest

Ocean City

King of Prussia

Cherry Hill

Newark

Dewey Beach

Reading

North Wildwood

Avalon

Dover

Lewes

Stone Harbor

Essington

Vineland

New Castle

Pottstown

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 $287

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Find the cheapest flights from London Heathrow Airport to Philadelphia

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Iberia flights from London Heathrow Airport to Philadelphia

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

momondo Fare Finder

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?

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?

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

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

What 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 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 15% 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 January 2026. The most popular departure time for this route is 1:00PM, with 63% of flights per day taking off in the afternoon.

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

As of January 2026, 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