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$518+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PHL
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from London Heathrow to Philadelphia are usually found in March or February, booked 62 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$569
(Expedia)

One-way from

$522
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$675

Good round-trip deal

$674 or less

Good one-way deal

$658 or less
Provider with most accurate pricing for London Heathrow-Philadelphia flight deals.
Search Deals
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
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($111 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from London Heathrow to Philadelphia.
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Price to beat on a one-way flight from London Heathrow to Philadelphia.
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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 February 20, 2025.

This Expedia deal was found by Cheapflights users on 2/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/58:25 amLHR - PHL
1 stop18h 27mJetBlue
Mon 3/106:00 amPHL - LHR
1 stop19h 55mJetBlue
Deal found 2/19$569
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Fri 3/216:30 amLHR - PHL
2 stops37h 15mUnited Airlines
Fri 3/286:30 amPHL - LHR
1 stop20h 10mUnited Airlines
Deal found 2/19$574
This World Air Fares deal was found by Cheapflights users on 2/19. 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 World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/227:30 amLHR - PHL
1 stop13h 30mLufthansa
Mon 4/285:35 pmPHL - LHR
1 stop11h 05mLufthansa
Deal found 2/19$578
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/610:05 amLHR - PHL
Nonstop7h 45mAmerican Airlines
Tue 5/131:50 pmPHL - LHR
1 stop11h 25mAmerican Airlines
Deal found 2/19$583
This Air Canada deal was found by Cheapflights users on 2/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/181:30 pmLHR - PHL
2 stops30h 15mMultiple Airlines
Tue 3/253:30 pmPHL - LHR
1 stop11h 40mMultiple Airlines
Deal found 2/19$586
This lol.travel deal was found by Cheapflights users on 2/19. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/26:50 amLHR - PHL
2 stops12h 57mAir Canada
Wed 4/93:30 pmPHL - LHR
1 stop10h 00mAir Canada
Deal found 2/19$587
This Booking.com deal was found by Cheapflights users on 2/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/38:50 amLHR - PHL
1 stop12h 45mBritish Airways
Mon 3/104:00 pmPHL - LHR
1 stop11h 50mBritish Airways
Deal found 2/19$592
This Bravofly deal was found by Cheapflights users on 2/19. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/311:30 amLHR - PHL
2 stops16h 50mVirgin Atlantic
Mon 3/105:33 pmPHL - LHR
1 stop9h 32mVirgin Atlantic
Deal found 2/19$613
This Gotogate deal was found by Cheapflights users on 2/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/31:10 pmLHR - PHL
Nonstop8h 10mFinnair
Mon 3/107:40 pmPHL - LHR
Nonstop6h 55mFinnair
Deal found 2/19$620
This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/36:30 amLHR - PHL
2 stops14h 35mDelta
Mon 3/1012:28 pmPHL - LHR
2 stops14h 27mDelta
Deal found 2/19$627
This Expedia deal was found by Cheapflights users on 2/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/311:30 amLHR - PHL
2 stops14h 53mAir France
Mon 3/104:50 pmPHL - LHR
1 stop10h 00mAir France
Deal found 2/19$631
This SWISS deal was found by Cheapflights users on 2/19. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/78:05 pmLHR - PHL
2 stops26h 22mSWISS
Tue 4/155:35 pmPHL - LHR
2 stops17h 50mSWISS
Deal found 2/19$654

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 February 20, 2025.

Fly from

Heathrow

Fly to

Philadelphia

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 3/5

8:25 am-9:52 pm

1 stop18h 27m

Philadelphia

Mon 3/10

6:00 am-5:55 am

1 stop19h 55m

$569

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 3/21

6:30 am-3:45 pm

2 stops37h 15m

Philadelphia

Fri 3/28

6:30 am-6:40 am

1 stop20h 10m

$574

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 4/22

7:30 am-4:00 pm

1 stop13h 30m

Philadelphia

Mon 4/28

5:35 pm-9:40 am

1 stop11h 05m

$578

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 5/6

10:05 am-12:50 pm

Nonstop7h 45m

Philadelphia

Tue 5/13

1:50 pm-6:15 am

1 stop11h 25m

$583

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 3/18

1:30 pm-3:45 pm

2 stops30h 15m

Philadelphia

Tue 3/25

3:30 pm-7:10 am

1 stop11h 40m

$586

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 4/2

6:50 am-2:47 pm

2 stops12h 57m

Philadelphia

Wed 4/9

3:30 pm-6:30 am

1 stop10h 00m

$587

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 3/3

8:50 am-4:35 pm

1 stop12h 45m

Philadelphia

Mon 3/10

4:00 pm-7:50 am

1 stop11h 50m

$592

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 3/3

11:30 am-11:20 pm

2 stops16h 50m

Philadelphia

Mon 3/10

5:33 pm-7:05 am

1 stop9h 32m

$613

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 3/3

1:10 pm-4:20 pm

Nonstop8h 10m

Philadelphia

Mon 3/10

7:40 pm-6:35 am

Nonstop6h 55m

$620

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 3/3

6:30 am-4:05 pm

2 stops14h 35m

Philadelphia

Mon 3/10

12:28 pm-6:55 am

2 stops14h 27m

$627

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 28 results
1
2
3

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
Thrive TravelPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*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 February 14, 2025.

The best time to book flights from London Heathrow Airport to Philadelphia is 62 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 February 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 44% versus a flight in the morning.

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 February 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 February 20, 2025.
To help decide which airline to fly from London to Philadelphia, see what other customers have to say about Delta, Finnair and Austrian Airlines. 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
8,227 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Delta
8.0
Very good
8,227 reviews
Delta
8.0
Very good
8,227 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Finnair
7.6
Good
1,274 reviews
Delta
8.0
Very good
8,227 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Austrian Airlines
7.6
Good
774 reviews
Delta
8.0
Very good
8,227 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

SWISS
7.5
Good
1,572 reviews
Delta
8.0
Very good
8,227 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very good
8,227 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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 JetBlue is currently your cheapest option to Philadelphia, with prices starting at $569. Additional round-trip tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at $574 and $578, respectively. JetBlue is currently priced 25% 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 $525. Iberia flights start at $578 while deals on WestJet start at $591 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: Malaysia Airlines (77%), American Airlines (74%), Finnair( 74%).

  • 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 $1,299, our data indicates the cheapest price to be $586. The most popular route (London Heathrow - Philadelphia), is priced around $560.

  • 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
Pottstown
Reading
Wildwood
Exton
Ocean City
Cherry Hill
Essington
Chester
Willow Grove
Newark
Middletown
Millville
Wyomissing
Ephrata
Dewey Beach
West Chester
Malvern
Dover

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
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Heathrow to Pittsburgh flights
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Stansted to Philadelphia flights
London City to Reagan-National flights
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Luton to Philadelphia flights
Luton to LaGuardia flights
Heathrow to Harrisburg flights
Stansted to Pittsburgh flights
Heathrow to Allentown flights
Southend to John F Kennedy Intl flights
Luton to Pittsburgh flights
Southend to Newark 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$596Average$760FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$630Average$815FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$635Average$863FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$643Average$767FlexibilityNo cancel feeOn-time76%
IberiaCheapest$644Average$859FlexibilityNo cancel feeOn-time77%
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