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$526+ Cheap flights from London (LON) 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PHL
Feb 16 — Feb 231
Sun 2/16
Sun 2/23
1 adult, Economy
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The best prices from London to Philadelphia are usually found in February or March, booked 66 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from London to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 11, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$561
(JetBlue)

One-way from

$526
(Gurufare)

Popular in

August

Cheapest in

February

Average price

$665

Good round-trip deal

$648 or less

Good one-way deal

$637 or less
Provider with most accurate pricing for London (LON)-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for London (LON)-Philadelphia flights.
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From London (LON) to Philadelphia
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One-way flight from London (LON) to Philadelphia
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 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 (LON) to Philadelphia.
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Price to beat on a one-way flight from London (LON) to Philadelphia.
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Find flight deals from London to Philadelphia

Cheapest flights from London to Philadelphia
Explore the most affordable flight options available from London to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2025.

This JetBlue deal was found by Cheapflights users on 2/11. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/258:25 amLHR - PHL
1 stop14h 00mJetBlue
Mon 3/310:12 amPHL - LHR
1 stop14h 43mJetBlue
Deal found 2/11$561
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1912:00 pmLGW - PHL
1 stop29h 15mMultiple Airlines
Sun 3/301:23 pmPHL - LGW
1 stop15h 37mMultiple Airlines
Deal found 2/10$561
This United Airlines deal was found by Cheapflights users on 2/11. 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 3/286:30 amLHR - PHL
2 stops20h 06mUnited Airlines
Fri 4/410:43 amPHL - LHR
2 stops14h 47mUnited Airlines
Deal found 2/11$565
This TravelUp deal was found by Cheapflights users on 2/11. 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.
Tue 2/257:50 amLHR - PHL
1 stop13h 45mBritish Airways
Mon 3/39:16 pmPHL - LHR
Nonstop7h 04mBritish Airways
Deal found 2/11$568
This American Airlines deal was found by Cheapflights users on 2/10. 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.
Mon 2/2410:15 amLHR - PHL
Nonstop8h 05mAmerican Airlines
Mon 3/31:45 pmPHL - LHR
1 stop11h 30mAmerican Airlines
Deal found 2/10$573
This SWISS deal was found by Cheapflights users on 2/10. 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 3/36:45 pmLGW - PHL
2 stops31h 49mSWISS
Mon 3/104:55 pmPHL - LGW
2 stops20h 55mSWISS
Deal found 2/10$582
This Expedia deal was found by Cheapflights users on 2/10. 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 6/212:10 pmLGW - PHL
1 stop16h 17mJetBlue
Mon 6/166:35 pmPHL - LGW
1 stop10h 00mJetBlue
Deal found 2/10$585
This Lufthansa deal was found by Cheapflights users on 2/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/127:30 amLHR - PHL
1 stop13h 30mLufthansa
Wed 3/266:55 pmPHL - LHR
1 stop10h 50mLufthansa
Deal found 2/10$590
This TravelUp deal was found by Cheapflights users on 2/10. 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 3/101:10 pmLHR - PHL
Nonstop8h 10mFinnair
Mon 3/177:40 pmPHL - LHR
Nonstop6h 55mFinnair
Deal found 2/10$593
This TravelUp deal was found by Cheapflights users on 2/10. 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.
Tue 3/1110:15 amLHR - PHL
Nonstop7h 50mMultiple Airlines
Wed 3/2610:15 pmPHL - LHR
Nonstop7h 05mMultiple Airlines
Deal found 2/10$599
This Mytrip deal was found by Cheapflights users on 2/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2611:00 amSTN - PHL
3 stops27h 59mMultiple Airlines
Sun 3/28:59 pmPHL - STN
3 stops32h 01mMultiple Airlines
Deal found 2/10$615
This American Airlines deal was found by Cheapflights users on 2/10. 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.
Mon 3/1011:20 amLGW - PHL
2 stops16h 44mAmerican Airlines
Mon 3/171:50 pmPHL - LGW
2 stops15h 10mAmerican Airlines
Deal found 2/10$615

Find flights from London to Philadelphia within your budget

Customize your flight search to find flights from London 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 11, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 2/25

8:25 am-5:25 pm

1 stop14h 00m

Philadelphia

Mon 3/3

10:12 am-5:55 am

1 stop14h 43m

$561

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Wed 3/19

12:00 pm-1:15 pm

1 stop29h 15m

Philadelphia

Sun 3/30

1:23 pm-10:00 am

1 stop15h 37m

$561

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 3/28

6:30 am-10:36 pm

2 stops20h 06m

Philadelphia

Fri 4/4

10:43 am-6:30 am

2 stops14h 47m

$565

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 2/25

7:50 am-4:35 pm

1 stop13h 45m

Philadelphia

Mon 3/3

9:16 pm-9:20 am

Nonstop7h 04m

$568

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 2/24

10:15 am-1:20 pm

Nonstop8h 05m

Philadelphia

Mon 3/3

1:45 pm-6:15 am

1 stop11h 30m

$573

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Mon 3/3

6:45 pm-9:34 pm

2 stops31h 49m

Philadelphia

Mon 3/10

4:55 pm-5:50 pm

2 stops20h 55m

$582

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Mon 6/2

12:10 pm-11:27 pm

1 stop16h 17m

Philadelphia

Mon 6/16

6:35 pm-9:35 am

1 stop10h 00m

$585

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 3/12

7:30 am-5:00 pm

1 stop13h 30m

Philadelphia

Wed 3/26

6:55 pm-9:45 am

1 stop10h 50m

$590

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 3/10

1:10 pm-5:20 pm

Nonstop8h 10m

Philadelphia

Mon 3/17

7:40 pm-6:35 am

Nonstop6h 55m

$593

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 3/11

10:15 am-2:05 pm

Nonstop7h 50m

Philadelphia

Wed 3/26

10:15 pm-9:20 am

Nonstop7h 05m

$599

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 58 results
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Compare providers for flights from London 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 London to Philadelphia in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London-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-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 London to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from London 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 London to Philadelphia

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

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

Use this chart to determine the optimal time to book a round-trip flight from London to Philadelphia. Price data was last updated on February 7, 2025.

The best time to book flights from London to Philadelphia is 66 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 to Philadelphia?

Currently, August is the cheapest month in which you can book a flight from London to Philadelphia (average of $236). Flying from London 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 LON to PHL?

Find hourly flight availability from London 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 11, 2025.

When flying from London to Philadelphia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 16% versus a flight in the morning.

Weekly flight availability from London to Philadelphia

Explore weekly flight availability from London 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 11, 2025.

The most flights from LON 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 11, 2025.
Peruse reviews from past customers who have flown with Delta, Finnair and Austrian Airlines from London to Philadelphia to help guide your decision. 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
8,336 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

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
8,336 reviews
Delta
8.0
Very good
8,336 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

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
1,281 reviews
Delta
8.0
Very good
8,336 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

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
7.5
Good
782 reviews
Delta
8.0
Very good
8,336 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

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
1,580 reviews
Delta
8.0
Very good
8,336 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

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
659 reviews
Delta
8.0
Very good
8,336 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

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 London 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?

    Located just 7.0 mi from the city center, Philadelphia is the airport most travelers will use when flying to Philadelphia from London. Booking flights from London to Philadelphia (PHL) should be relatively easy as there are 10 daily inbound flights from London from 5 different airlines.

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

    According to our current data, JetBlue ($561), United Airlines ($565), and British Airways ($568) offers the cheapest pricing from London to Philadelphia. You may be able to fly from London to Philadelphia for 25% less than the average price by searching for these airlines.

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

    The cheapest airlines for a one-way flight from London to Philadelphia are Aer Lingus ($526), British Airways ($622), and Lufthansa ($627).

  • What are the most popular routes from London to Philadelphia?

    When deciding which route to take from London to Philadelphia consider London Heathrow - Philadelphia, London Gatwick - Philadelphia or London City - Philadelphia as they are the most popular.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Philadelphia on time: Malaysia Airlines (75%), American Airlines (71%), Finnair (71%).

  • What are the cheapest flights from London to Philadelphia?

    While on average a flight from London to Philadelphia is generally $1,262, our data shows the cheapest flight currently is $571. When looking at the most popular route, (London Heathrow - Philadelphia), you can expect to pay $520 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London 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 to Philadelphia?

    Currently, August is the cheapest month in which you can book a flight from London to Philadelphia (average of $236). Flying from London 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?

Book flights to London if you plan to visit one of these locations
King of Prussia
Vineland
Wildwood
Pottstown
Reading
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 London to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from London to Philadelphia

Discover the top 5 airlines that operate flights from London 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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$596Average$749FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$605Average$717FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$632Average$794FlexibilityNo cancel feeOn-time70%
FinnairCheapest$643Average$767FlexibilityNo cancel feeOn-time76%
IberiaCheapest$644Average$859FlexibilityNo cancel feeOn-time77%
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