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$551+ Cheap flights from Heathrow (LHR) to Philadelphia (PHL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PHL
Jan 25 — Feb 11
Sat 1/25
Sat 2/1
1 adult, Economy
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The best prices from London Heathrow to Philadelphia are usually found in March or February, booked 86 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Heathrow to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$575
(SWISS)

One-way from

$551
(Gurufare)

Popular in

July

Cheapest in

March

Average price

$700
Provider with most accurate pricing for London Heathrow-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Philadelphia flights.
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From London Heathrow to Philadelphia
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One-way flight from London Heathrow to Philadelphia
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High demand for flights, 13% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from Heathrow to Philadelphia

Cheapest flights from Heathrow to Philadelphia
Explore the most affordable flight options available from Heathrow to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2025.

This SWISS deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/86:40 pmLHR - PHL
2 stops33h 50mSWISS
Mon 3/174:55 pmPHL - LHR
2 stops22h 20mSWISS
Deal found 1/20$575
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/299:50 amLHR - PHL
1 stop11h 50mAmerican Airlines
Sat 2/89:21 pmPHL - LHR
Nonstop6h 59mAmerican Airlines
Deal found 1/20$576
This FlightHub deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/56:30 amLHR - PHL
1 stop15h 05mMultiple Airlines
Mon 3/177:40 pmPHL - LHR
Nonstop6h 55mMultiple Airlines
Deal found 1/20$577
This United Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/167:30 amLHR - PHL
1 stop13h 30mUnited Airlines
Sun 2/235:00 pmPHL - LHR
1 stop33h 55mUnited Airlines
Deal found 1/19$578
This TravelUp deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/810:15 amLHR - PHL
Nonstop8h 15mBritish Airways
Thu 2/136:40 pmPHL - LHR
Nonstop6h 55mBritish Airways
Deal found 1/19$584
This Air Canada deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/298:55 amLHR - PHL
2 stops18h 41mAir Canada
Sat 2/83:30 pmPHL - LHR
1 stop10h 40mAir Canada
Deal found 1/20$586
This The Travel House deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/152:30 pmLHR - PHL
1 stop13h 06mLufthansa
Thu 2/203:30 pmPHL - LHR
2 stops15h 20mLufthansa
Deal found 1/19$589
This EaseMyTrip deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2910:15 amLHR - PHL
Nonstop8h 15mFinnair
Sat 2/89:21 pmPHL - LHR
Nonstop6h 59mFinnair
Deal found 1/19$591
This Expedia deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/272:30 pmLHR - PHL
1 stop13h 22mKLM
Mon 2/36:07 pmPHL - LHR
1 stop11h 28mKLM
Deal found 1/20$592
This TravelUp deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/278:55 amLHR - PHL
2 stops19h 25mVirgin Atlantic
Wed 6/410:45 amPHL - LHR
1 stop17h 40mVirgin Atlantic
Deal found 1/20$598
This Expedia deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/171:10 pmLHR - PHL
Nonstop8h 10mIberia
Sat 2/226:35 pmPHL - LHR
1 stop32h 40mIberia
Deal found 1/20$600
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/276:30 amLHR - PHL
2 stops15h 30mDelta
Wed 6/41:00 pmPHL - LHR
2 stops13h 15mDelta
Deal found 1/20$601

Find flights from Heathrow to Philadelphia within your budget

Customize your flight search to find flights from Heathrow 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, Cheapflights users made 2,558,603 searches. Data last updated January 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 3/8

6:40 pm-11:30 pm

2 stops33h 50m

Philadelphia

Mon 3/17

4:55 pm-7:15 pm

2 stops22h 20m

$575

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 1/29

9:50 am-4:40 pm

1 stop11h 50m

Philadelphia

Sat 2/8

9:21 pm-9:20 am

Nonstop6h 59m

$576

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 3/5

6:30 am-4:35 pm

1 stop15h 05m

Philadelphia

Mon 3/17

7:40 pm-6:35 am

Nonstop6h 55m

$577

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 2/16

7:30 am-4:00 pm

1 stop13h 30m

Philadelphia

Sun 2/23

5:00 pm-7:55 am

1 stop33h 55m

$578

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 3/8

8:25 am-5:24 pm

1 stop13h 59m

Philadelphia

Mon 3/17

10:11 am-5:55 am

1 stop15h 44m

$582

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 2/2

7:30 pm-3:35 pm

1 stop25h 05m

Philadelphia

Sun 2/9

7:58 pm-7:00 am

1 stop30h 02m

$583

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 1/29

8:55 am-10:36 pm

2 stops18h 41m

Philadelphia

Sat 2/8

3:30 pm-7:10 am

1 stop10h 40m

$586

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 2/15

2:30 pm-10:36 pm

1 stop13h 06m

Philadelphia

Thu 2/20

3:30 pm-11:50 am

2 stops15h 20m

$589

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 1/29

10:15 am-1:30 pm

Nonstop8h 15m

Philadelphia

Sat 2/8

9:21 pm-9:20 am

Nonstop6h 59m

$591

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 1/27

2:30 pm-10:52 pm

1 stop13h 22m

Philadelphia

Mon 2/3

6:07 pm-10:35 am

1 stop11h 28m

$592

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 30 results
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Compare providers for flights from Heathrow to Philadelphia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Philadelphia in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
KAYAKPrice Accuracy-Trust Score*1 star
AranGrantPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
Thrive TravelPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Heathrow Airport-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Philadelphia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Heathrow with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Heathrow to Philadelphia

Get recent, data-driven insights about flights from Heathrow to Philadelphia including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London Heathrow Airport to Philadelphia?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Philadelphia. Price data was last updated on January 17, 2025.

The best time to book flights from London Heathrow Airport to Philadelphia is 73 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London Heathrow Airport to Philadelphia?

Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of $236). Flying from London Heathrow Airport to Philadelphia in March is currently the most expensive (average of $295). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to PHL?

Find hourly flight availability from Heathrow to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 20, 2025.

When flying from London Heathrow Airport to Philadelphia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 39% versus a flight at noon.

Weekly flight availability from London Heathrow Airport to Philadelphia

Explore weekly flight availability from Heathrow to Philadelphia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 20, 2025.

The most flights from LHR to PHL are scheduled on a Monday (10 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 on average).

Rainfall in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

Temperature in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated January 20, 2025.
To help decide which airline to fly from London to Philadelphia, see what other customers have to say about United Airlines, American Airlines and JetBlue. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,285 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,599 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic
7.5
Good
665 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France
7.4
Good
1,490 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Philadelphia from London Heathrow?

    Most people fly into Philadelphia (PHL) if they book a flight to Philadelphia from London Heathrow. On average, Philadelphia has 10 inbound flights from London Heathrow per day from 5 airlines. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

  • What are the cheapest airlines flying from London Heathrow Airport to Philadelphia round-trip?

    Flying on SWISS is currently your cheapest option to Philadelphia, with prices starting at $575. Additional round-trip tickets that might be worth considering are offered by United Airlines and American Airlines, with the lowest prices starting at $578 and $579, respectively. SWISS is currently priced 23% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from London Heathrow Airport to Philadelphia one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at $551. Lufthansa flights start at $570 while deals on Finnair start at $571 one-way.

  • What are the most reliable airlines from London Heathrow Airport to Philadelphia?

    Before booking your flight to Philadelphia from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Aer Lingus (77%), American Airlines (75%), Finnair( 75%).

  • What are the cheapest flights from London Heathrow Airport to Philadelphia?

    Looking for the cheapest flight from London Heathrow Airport to Philadelphia? While on average our users pay $1,308, our data indicates the cheapest price to be $590. The most popular route (London Heathrow - Philadelphia), is priced around $518.

  • Can I find deals for flights from Heathrow to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Heathrow to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Philadelphia.

  • Can I find deals for business class flights from Heathrow to Philadelphia?

    Yes. Cheapflights offers flight deals from Heathrow to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Philadelphia?

    Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of $236). Flying from London Heathrow Airport to Philadelphia in March is currently the most expensive (average of $295). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
King of Prussia
Vineland
Wildwood
Pottstown
Reading
Cherry Hill
Exton
Ocean City
Essington
Chester
Willow Grove
Newark
Middletown
Millville
Wyomissing
Dover
Ephrata
Dewey Beach
West Chester
Malvern

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Gatwick to John F Kennedy Intl flights
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Stansted to John F Kennedy Intl flights
Heathrow to Dulles Intl flights
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Heathrow to Harrisburg flights
Stansted to Pittsburgh flights
Southend to Newark flights
Luton to LaGuardia flights
Heathrow to Allentown flights
Southend to John F Kennedy Intl flights
Luton to Pittsburgh flights

Top 5 airlines flying from Heathrow to Philadelphia

Discover the top 5 airlines that operate flights from Heathrow to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$595Average$772FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$596Average$744FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$605Average$781FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$643Average$767FlexibilityNo cancel feeOn-time76%
IberiaCheapest$644Average$859FlexibilityNo cancel feeOn-time77%
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