Cheap flights from London Heathrow Airport to Philadelphia from £341
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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PHL
1 Jul — 8 Jul1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Philadelphia are usually found in September or February, booked 12 days in advance, depart on a Tuesday or Thursday and return on a Tuesday
Cheap flight deals from Heathrow to Philadelphia
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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 1 June 2026.
Sun 13/907:30
LHR
-
PHL
1 stop13h 35m
United Airlines
Sun 20/907:00
PHL
-
LHR
2 stops33h 00m
United Airlines
Deal found 28/5£610
Thu 11/612:00
LHR
-
PHL
1 stop11h 55m
Aer Lingus
Sun 14/620:25
PHL
-
LHR
1 stop9h 45m
Aer Lingus
Deal found 28/5£612
Fri 26/608:40
LHR
-
PHL
1 stop16h 20m
JetBlue
Mon 29/621:29
PHL
-
LHR
1 stop28h 01m
JetBlue
Deal found 28/5£613
Sun 14/608:40
LHR
-
PHL
1 stop27h 58m
JetBlue
Tue 30/608:28
PHL
-
LHR
1 stop17h 02m
JetBlue
Deal found 27/5£614
Thu 10/906:00
LHR
-
PHL
2 stops16h 54m
SWISS
Thu 24/907:00
PHL
-
LHR
2 stops18h 30m
SWISS
Deal found 28/5£615
Tue 7/709:30
LHR
-
PHL
1 stop10h 19m
Air Canada
Thu 10/1209:15
PHL
-
LHR
2 stops16h 55m
Air Canada
Deal found 28/5£617
Sat 13/608:40
LHR
-
PHL
1 stop27h 58m
JetBlue
Sat 20/620:55
PHL
-
LHR
1 stop28h 35m
JetBlue
Deal found 28/5£620
Fri 12/607:40
LHR
-
PHL
1 stop16h 15m
Aer Lingus
Sun 21/620:25
PHL
-
LHR
1 stop9h 45m
Aer Lingus
Deal found 27/5£622
Tue 15/908:40
LHR
-
PHL
1 stop14h 24m
Multiple Airlines
Wed 23/918:45
PHL
-
LHR
Nonstop7h 05m
Multiple Airlines
Deal found 28/5£623
Mon 7/907:35
LHR
-
PHL
1 stop11h 05m
British Airways
Thu 17/918:45
PHL
-
LHR
Nonstop7h 05m
British Airways
Deal found 28/5£623
Best flights from Heathrow to Philadelphia
Discover carefully curated flight deals from Heathrow to Philadelphia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 June 2026.
Wed 24/606:50
LHR
-
PHL
2 stops17h 05m
United Airlines
Wed 1/710:45
PHL
-
LHR
2 stops16h 50m
United Airlines
Deal found 27/5£665
Thu 10/907:05
LHR
-
PHL
1 stop11h 40m
Finnair
Thu 24/919:35
PHL
-
LHR
Nonstop7h 15m
Finnair
Deal found 27/5£669
Sun 28/609:15
LHR
-
PHL
Nonstop7h 55m
British Airways
Tue 7/719:36
PHL
-
LHR
1 stop18h 19m
British Airways
Deal found 30/5£706
Tue 15/907:05
LHR
-
PHL
3 stops20h 11m
Scandinavian Airlines
Wed 30/909:25
PHL
-
LHR
3 stops22h 30m
Scandinavian Airlines
Deal found 31/5£735
Tue 21/719:50
LHR
-
PHL
3 stops41h 40m
TAP AIR PORTUGAL
Mon 10/808:28
PHL
-
LHR
2 stops23h 17m
TAP AIR PORTUGAL
Deal found 29/5£784
Sat 11/706:50
LHR
-
PHL
2 stops21h 30m
United Airlines
Sun 26/719:45
PHL
-
LHR
1 stop30h 10m
United Airlines
Deal found 29/5£686
Thu 25/612:30
LHR
-
PHL
Nonstop7h 55m
Finnair
Thu 2/718:50
PHL
-
LHR
Nonstop7h 00m
Finnair
Deal found 27/5£708
Fri 4/913:45
LHR
-
PHL
Nonstop7h 55m
British Airways
Mon 7/922:15
PHL
-
LHR
Nonstop7h 05m
British Airways
Deal found 30/5£709
Thu 25/606:50
LHR
-
PHL
2 stops17h 04m
United Airlines
Thu 2/713:31
PHL
-
LHR
1 stop12h 14m
United Airlines
Deal found 28/5£688
Thu 9/707:25
LHR
-
PHL
2 stops16h 29m
United Airlines
Sun 19/715:10
PHL
-
LHR
2 stops13h 10m
United Airlines
Deal found 30/5£716
Tue 14/706:20
LHR
-
PHL
1 stop14h 50m
British Airways
Sun 16/818:35
PHL
-
LHR
1 stop10h 05m
British Airways
Deal found 28/5£823
Sun 28/608:30
LHR
-
PHL
1 stop12h 09m
United Airlines
Sun 5/715:25
PHL
-
LHR
1 stop13h 35m
United Airlines
Deal found 31/5£746
Direct flights from Heathrow to Philadelphia
Explore direct flight options from Heathrow to Philadelphia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 1 June 2026.
Mon 7/913:45
LHR
-
PHL
Nonstop7h 55m
British Airways
Thu 17/918:45
PHL
-
LHR
Nonstop7h 05m
British Airways
Deal found 28/5£626
Wed 11/1110:35
LHR
-
PHL
Nonstop8h 15m
British Airways
Wed 18/1118:35
PHL
-
LHR
Nonstop7h 00m
British Airways
Deal found 30/5£633
Tue 7/712:30
LHR
-
PHL
Nonstop8h 05m
British Airways
Thu 10/1218:35
PHL
-
LHR
Nonstop7h 00m
British Airways
Deal found 28/5£640
Wed 7/1009:15
LHR
-
PHL
Nonstop8h 00m
Finnair
Wed 21/1019:40
PHL
-
LHR
Nonstop7h 10m
Finnair
Deal found 29/5£643
Wed 8/712:30
LHR
-
PHL
Nonstop8h 05m
Finnair
Mon 20/719:35
PHL
-
LHR
Nonstop7h 15m
Finnair
Deal found 28/5£646
Mon 7/909:15
LHR
-
PHL
Nonstop8h 00m
Iberia
Thu 17/918:45
PHL
-
LHR
Nonstop7h 05m
Iberia
Deal found 28/5£649
Mon 9/1110:35
LHR
-
PHL
Nonstop8h 15m
British Airways
Fri 13/1118:35
PHL
-
LHR
Nonstop7h 00m
British Airways
Deal found 31/5£652
Last-minute flights from Heathrow to Philadelphia
Discover last-minute flight deals from Heathrow to Philadelphia. Data last updated 1 June 2026 and is based on user searches.
Sun 7/608:40
LHR
-
PHL
1 stop28h 56m
JetBlue
Sat 20/620:55
PHL
-
LHR
1 stop28h 35m
JetBlue
Deal found 29/5£705
Mon 8/613:25
LHR
-
PHL
1 stop10h 30m
Aer Lingus
Mon 22/620:25
PHL
-
LHR
1 stop11h 15m
Aer Lingus
Deal found 31/5£647
Tue 9/613:25
LHR
-
PHL
1 stop10h 30m
Aer Lingus
Tue 25/820:25
PHL
-
LHR
1 stop9h 45m
Aer Lingus
Deal found 29/5£702
Wed 10/608:40
LHR
-
PHL
1 stop15h 10m
JetBlue
Tue 21/709:26
PHL
-
LHR
1 stop16h 04m
JetBlue
Deal found 29/5£695
Thu 11/612:00
LHR
-
PHL
1 stop11h 55m
Aer Lingus
Sun 14/620:25
PHL
-
LHR
1 stop9h 45m
Aer Lingus
Deal found 28/5£612
Thu 11/612:00
LHR
-
PHL
1 stop11h 55m
Aer Lingus
Mon 15/620:25
PHL
-
LHR
1 stop11h 15m
Aer Lingus
Deal found 29/5£640
Thu 11/616:40
LHR
-
PHL
1 stop26h 30m
Lufthansa
Sun 6/919:40
PHL
-
LHR
1 stop30h 15m
Lufthansa
Deal found 28/5£718
Thu 11/609:30
LHR
-
PHL
2 stops17h 03m
Multiple Airlines
Mon 15/615:25
PHL
-
LHR
1 stop13h 35m
Multiple Airlines
Deal found 28/5£720
Thu 11/612:30
LHR
-
PHL
Nonstop7h 55m
American Airlines
Mon 15/613:53
PHL
-
LHR
1 stop11h 22m
American Airlines
Deal found 28/5£721
One-way flights from Heathrow to Philadelphia
Search for one-way flight options from Heathrow to Philadelphia. Find affordable one-way fares based on user searches. Data last updated 1 June 2026.
Mon 15/620:50
LHR
-
PHL
3 stops29h 43m
Multiple Airlines
Deal found 31/5£341
Tue 11/808:45
LHR
-
PHL
2 stops15h 10m
Multiple Airlines
Deal found 30/5£351
Wed 26/814:50
LHR
-
PHL
2 stops33h 05m
Multiple Airlines
Deal found 31/5£358
Thu 13/808:45
LHR
-
PHL
2 stops15h 10m
Multiple Airlines
Deal found 29/5£363
Mon 22/620:50
LHR
-
PHL
3 stops31h 27m
Multiple Airlines
Deal found 31/5£365
Tue 25/808:40
LHR
-
PHL
1 stop16h 20m
JetBlue
Deal found 28/5£368
Sat 20/608:40
LHR
-
PHL
1 stop16h 20m
JetBlue
Deal found 30/5£370
Thu 27/808:45
LHR
-
PHL
2 stops15h 10m
Multiple Airlines
Deal found 30/5£371
Fri 12/608:40
LHR
-
PHL
1 stop16h 20m
JetBlue
Deal found 28/5£371
Sun 23/808:40
LHR
-
PHL
1 stop27h 58m
JetBlue
Deal found 30/5£373
Find 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 1 June 2026.
Customise 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 858,174 searches. Data last updated 1 June 2026.
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
Cheapest return flight
LondonPhiladelphia
LHR - PHL
LHRPHL
London Heathrow
Wed 24/6
06:50-18:55
2 stops17h 05m
Philadelphia
Wed 1/7
10:45-08:35
2 stops16h 50m
£665
LondonPhiladelphia
LHR - PHL
LHRPHL
London Heathrow
Thu 10/9
07:05-13:45
1 stop11h 40m
Philadelphia
Thu 24/9
19:35-07:50
Nonstop7h 15m
£669
LondonPhiladelphia
LHR - PHL
LHRPHL
London Heathrow
Sat 11/7
06:50-23:20
2 stops21h 30m
Philadelphia
Sun 26/7
19:45-06:55
1 stop30h 10m
£686
LondonPhiladelphia
LHR - PHL
LHRPHL
London Heathrow
Thu 25/6
06:50-18:54
2 stops17h 04m
Philadelphia
Thu 2/7
13:31-06:45
1 stop12h 14m
£688
LondonPhiladelphia
LHR - PHL
LHRPHL
London Heathrow
Sun 28/6
09:15-12:10
Nonstop7h 55m
Philadelphia
Tue 7/7
19:36-18:55
1 stop18h 19m
£706
Fastest return journey
LondonPhiladelphia
LHR - PHL
LHRPHL
London Heathrow
Thu 25/6
12:30-15:25
Nonstop7h 55m
Philadelphia
Thu 2/7
18:50-06:50
Nonstop7h 00m
£708
LondonPhiladelphia
LHR - PHL
LHRPHL
London Heathrow
Fri 4/9
13:45-16:40
Nonstop7h 55m
Philadelphia
Mon 7/9
22:15-10:20
Nonstop7h 05m
£709
LondonPhiladelphia
LHR - PHL
LHRPHL
London Heathrow
Thu 9/7
07:25-18:54
2 stops16h 29m
Philadelphia
Sun 19/7
15:10-09:20
2 stops13h 10m
£716
LondonPhiladelphia
LHR - PHL
LHRPHL
London Heathrow
Tue 15/9
07:05-22:16
3 stops20h 11m
Philadelphia
Wed 30/9
09:25-12:55
3 stops22h 30m
£735
LondonPhiladelphia
LHR - PHL
LHRPHL
London Heathrow
Sun 28/6
08:30-15:39
1 stop12h 09m
Philadelphia
Sun 5/7
15:25-10:00
1 stop13h 35m
£746
Flights are sorted by cheapest return flights first.
Deals found on 30/5
Showing 1-10 of 22 resultsSorted by cheapest first
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3
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.
LHR-PHL
Estimated return 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.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to Philadelphia
Prices
Airlines
Delays
More
How far ahead should I book a flight from London Heathrow Airport to Philadelphia?
To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Philadelphia, you should look to book at least 11 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from London Heathrow Airport to Philadelphia?
Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of £513). Flying from London Heathrow Airport to Philadelphia in July is currently the most expensive (average of £686). 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 1 June 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Philadelphia as you normally would.
How much does it cost for a return flight from London Heathrow Airport to Philadelphia?
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 1 June 2026.
The most flights from LHR to PHL are scheduled on a Monday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (15 on average).
How often are flights from London to Philadelphia delayed?
About 18% of weekly flights between London and Philadelphia have experienced delays in the past year, with the average delay time being 172 minutes.
What is the most punctual flight time for London to Philadelphia flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to Philadelphia flights?
Over the past year, British Airways have had the lowest number of delays on this route, with just 18% of flights being delayed.
What’s the top stopover airport for flights from London Heathrow Airport to Philadelphia?
Share of one-stop return flights from London Heathrow Airport to Philadelphia chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Dublin (DUB) – chosen by Cheapflights users on 50% of one-stop itineraries from London Heathrow Airport to Philadelphia on Cheapflights.
What’s the cheapest stopover airport for flights from London Heathrow Airport to Philadelphia?
Average return fare for one-stop flights from London Heathrow Airport to Philadelphia, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Washington, D.C. (IAD) is the most affordable one-stop option, with an average return flight price of £537.
What’s the fastest stopover option from London Heathrow Airport to Philadelphia?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Philadelphia, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Montreal (YUL) have the shortest average one-way travel time for one-stop routes: 10h 08m.
Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Philadelphia?
Average stopover duration for one-stop one-way flights from London Heathrow Airport to Philadelphia, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Montreal (YUL) offer the fastest connection on this route, with an average stopover time of 1h 49m.
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 1 June 2026.
Get a feel of what it's like to fly with Finnair,Aer Lingus, andAmerican Airlines from London Heathrow Airport to Philadelphia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
All crew members are really nice behavior. Devdutt also nice person.
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 15 inbound flights from London Heathrow per day from 9 airlines. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.
How long is the flight from London Heathrow Airport to Philadelphia?
Airlines like United Airlines, Finnair, and British Airways fly from London Heathrow Airport to Philadelphia in about 7h 55m. The time it takes to get you to your destination can typically vary by up to 9h 10m. The distance between London Heathrow Airport and Philadelphia is about 3533 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to Philadelphia round-trip?
Our cheapest airline available from London Heathrow Airport to Philadelphia is Lufthansa. Our recent data shows that you can find tickets from as low as £386 on this airline. Additional options worth looking into are JetBlue and Air Canada, starting at £418 and £433 round-trip. Lufthansa is currently priced 35% 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?
The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as £323. However, be on the lookout for offers from Aer Lingus and British Airways, as they are both options that can get you from London Heathrow Airport to Philadelphia for a low price.
What are the most reliable airlines from London Heathrow Airport to Philadelphia?
Consider Malaysia Airlines (85%), American Airlines (79%) or Finnair (79%) when booking your flight. These represent the most reliable airlines when flying from London Heathrow Airport to Philadelphia.
What are the cheapest flights from London Heathrow Airport to Philadelphia?
The cheapest flight price from London Heathrow Airport to Philadelphia is £417. On average you can expect to pay £1,140. The most popular route, (London Heathrow - Philadelphia), can usually be booked for £533.
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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of £513). Flying from London Heathrow Airport to Philadelphia in July is currently the most expensive (average of £686). 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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Philadelphia flight routes
Popular flights
Fly from Heathrow to Philadelphia on these airlines
Choose from the following airlines for your flight from Heathrow to Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on 1 June 2026.
Explore flights to Philadelphia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 1 June 2026.
Top 9 airlines flying from Heathrow to Philadelphia
Discover the top 9 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 858,174 searches. Data last updated 1 June 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Heathrow to Philadelphia?
When you search for this flight from Heathrow to Philadelphia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Heathrow to Philadelphia?
Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Philadelphia for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Heathrow to Philadelphia with no change fees?
Need flexible booking options for your flight to Philadelphia from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Heathrow to Philadelphia become cheaper?
Yes! Start tracking prices for Heathrow to Philadelphia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.
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