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Cheap flights from London Heathrow Airport to Philadelphia from $494

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Philadelphia departing on 12/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London Heathrow Airport to Philadelphia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:30 am - 4:05 pmLHR-PHL
14h 35m1 stop
Multiple Airlines Logo
9:20 am - 8:35 pmPHL-LHR
30h 15m2 stops
$590Multiple Airlines
Find Deal
Tue, Nov 25 - Tue, Dec 2
Air Canada Logo
1:25 pm - 2:47 pmLHR-PHL
30h 22m1 stop
Air Canada Logo
9:20 am - 7:10 amPHL-LHR
16h 50m2 stops
$591Air Canada
Find Deal
Wed, Nov 26 - Wed, Dec 3
JetBlue Logo
9:20 am - 8:40 pmLHR-PHL
16h 20m1 stop
JetBlue Logo
4:32 pm - 6:55 amPHL-LHR
9h 23m1 stop
$593JetBlue
Find Deal
Wed, Nov 19 - Mon, Dec 8
United Airlines Logo
9:00 am - 10:24 amLHR-PHL
30h 24m2 stops
United Airlines Logo
9:20 am - 8:35 pmPHL-LHR
30h 15m2 stops
$600United Airlines
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Tue, Nov 18 - Sun, Nov 23
Aer Lingus Logo
7:50 am - 4:00 pmLHR-PHL
13h 10m1 stop
Aer Lingus Logo
5:30 pm - 9:05 amPHL-LHR
10h 35m1 stop
$605Aer Lingus
Find Deal
Fri, Dec 5 - Sun, Dec 7
United Airlines Logo
6:35 am - 10:46 pmLHR-PHL
21h 11m2 stops
United Airlines Logo
4:35 pm - 8:35 pmPHL-LHR
23h 00m2 stops
$606United Airlines
Find Deal
Wed, Nov 26 - Mon, Dec 1
Icelandair Logo
12:20 pm - 8:40 pmLHR-PHL
37h 20m2 stops
Icelandair Logo
6:00 am - 6:55 amPHL-LHR
19h 55m1 stop
$607Icelandair
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Tue, Nov 18 - Thu, Nov 27
JetBlue Logo
9:20 am - 3:57 pmLHR-PHL
11h 37m1 stop
JetBlue Logo
10:24 am - 6:55 amPHL-LHR
15h 31m1 stop
$608JetBlue
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Mon, Nov 17 - Thu, Dec 4
Icelandair Logo
9:20 am - 12:13 amLHR-PHL
18h 53m1 stop
Icelandair Logo
8:20 am - 8:45 pmPHL-LHR
32h 25m2 stops
$623Icelandair
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Wed, Mar 11 - Mon, Mar 23
Aer Lingus Logo
9:50 am - 4:00 pmLHR-PHL
11h 10m1 stop
Aer Lingus Logo
5:30 pm - 8:05 amPHL-LHR
9h 35m1 stop
$653Aer Lingus
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Thu, Nov 20 - Fri, Dec 5

Air Canada flights from London Heathrow Airport to Philadelphia

Our best Air Canada deals on London Heathrow Airport to Philadelphia flight tickets
Air Canada
Nov 26
LHR1:25 pmLondon Heathrow
30h 22m
1 stop
PHL2:47 pmPhiladelphia
Dec 3
PHL9:20 amPhiladelphia
16h 50m
2 stops
LHR7:10 amLondon Heathrow
$591
Find similar
Air Canada
Nov 10
LHR1:25 pmLondon Heathrow
30h 22m
1 stop
PHL2:47 pmPhiladelphia
Nov 17
PHL9:20 amPhiladelphia
16h 50m
2 stops
LHR7:10 amLondon Heathrow
$592
Find similar
Air Canada
Nov 26
LHR1:25 pmLondon Heathrow
14h 21m
2 stops
PHL10:46 pmPhiladelphia
Dec 3
PHL9:20 amPhiladelphia
16h 50m
2 stops
LHR7:10 amLondon Heathrow
$594
Find similar

JetBlue flights from London Heathrow Airport to Philadelphia

Our best JetBlue deals on London Heathrow Airport to Philadelphia flight tickets
JetBlue
Nov 19
LHR9:20 amLondon Heathrow
16h 20m
1 stop
PHL8:40 pmPhiladelphia
Dec 8
PHL4:32 pmPhiladelphia
9h 23m
1 stop
LHR6:55 amLondon Heathrow
$593
Find similar
JetBlue
Nov 17
LHR9:20 amLondon Heathrow
11h 37m
1 stop
PHL3:57 pmPhiladelphia
Dec 4
PHL10:24 amPhiladelphia
15h 31m
1 stop
LHR6:55 amLondon Heathrow
$608
Find similar
JetBlue
Nov 3
LHR9:20 amLondon Heathrow
16h 20m
1 stop
PHL8:40 pmPhiladelphia
Nov 10
PHL4:52 pmPhiladelphia
9h 03m
1 stop
LHR6:55 amLondon Heathrow
$611
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport to Philadelphia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 13, 2025.
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

Tue 11/25

6:30 am-4:05 pm

1 stop14h 35m

Philadelphia

Tue 12/2

9:20 am-8:35 pm

2 stops30h 15m

$590

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 11/26

1:25 pm-2:47 pm

1 stop30h 22m

Philadelphia

Wed 12/3

9:20 am-7:10 am

2 stops16h 50m

$591

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 11/19

9:20 am-8:40 pm

1 stop16h 20m

Philadelphia

Mon 12/8

4:32 pm-6:55 am

1 stop9h 23m

$593

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 11/18

9:00 am-10:24 am

2 stops30h 24m

Philadelphia

Sun 11/23

9:20 am-8:35 pm

2 stops30h 15m

$600

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 12/5

7:50 am-4:00 pm

1 stop13h 10m

Philadelphia

Sun 12/7

5:30 pm-9:05 am

1 stop10h 35m

$605

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 11/26

6:35 am-10:46 pm

2 stops21h 11m

Philadelphia

Mon 12/1

4:35 pm-8:35 pm

2 stops23h 00m

$606

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 11/18

12:20 pm-8:40 pm

2 stops37h 20m

Philadelphia

Thu 11/27

6:00 am-6:55 am

1 stop19h 55m

$607

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 11/17

9:20 am-3:57 pm

1 stop11h 37m

Philadelphia

Thu 12/4

10:24 am-6:55 am

1 stop15h 31m

$608

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 3/11

9:20 am-12:13 am

1 stop18h 53m

Philadelphia

Mon 3/23

8:20 am-8:45 pm

2 stops32h 25m

$623

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 11/20

9:50 am-4:00 pm

1 stop11h 10m

Philadelphia

Fri 12/5

5:30 pm-8:05 am

1 stop9h 35m

$653

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Philadelphia from

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?

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 $673.

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 $772. On the other hand, Saturday 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 $888.

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 $832.

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 $763 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 $679 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 October 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

$570

Fastest flight time

8h 00m

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 $570. The best round-trip flight deal from London Heathrow Airport to Philadelphia found on momondo in the last 72 hours is $708.
The fastest flight from London Heathrow Airport to Philadelphia takes 8h 00m
Direct flights go from London Heathrow Airport to Philadelphia every day.
There is 1 airport near Philadelphia: 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 11h 10m.

  • 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $559Free CancellationRating
7.0
2,986 reviews
Search Iberia flights
American AirlinesPriceFrom $597Free CancellationRating
7.2
11,042 reviews
Search American Airlines flights
British AirwaysPriceFrom $619Free CancellationRating
6.7
7,451 reviews
Search British Airways flights
FinnairPriceFrom $642Free CancellationRating
7.6
1,332 reviews
Search Finnair flights
Aer LingusPriceFrom $670Free CancellationRating
7.2
1,333 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 21 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 11,042 reviews) operates around 21 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.

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Cape May
Rehoboth Beach
Ocean City
Wildwood Crest
King of Prussia
Dewey Beach
Reading
Cherry Hill
Newark
North Wildwood
Dover
Avalon
Lewes
Stone Harbor
Vineland
Essington
Pottstown
New Castle
Somers Point

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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