Cheap flights from Philadelphia to London Heathrow Airport from £182
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 24/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LHR
26 Jan — 2 Feb1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Philadelphia to London Heathrow are usually found in September or October, booked 9 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday
Cheap flight deals from Philadelphia to Heathrow
Enter your travel dates to find the best prices.
Cheapest flights from Philadelphia to Heathrow
Explore the most affordable flight options available from Philadelphia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 December 2025.
Tue 30/1208:40PHL - LHR
1 stop17h 15mJetBlue
Wed 7/109:20LHR - PHL
1 stop14h 03mJetBlue
Deal found 27/12£552
Mon 29/1208:40PHL - LHR
1 stop17h 15mJetBlue
Thu 8/109:20LHR - PHL
1 stop14h 03mJetBlue
Deal found 27/12£598
Tue 30/1208:40PHL - LHR
1 stop17h 15mJetBlue
Thu 8/109:20LHR - PHL
1 stop14h 03mJetBlue
Deal found 27/12£624
Wed 31/1208:40PHL - LHR
1 stop17h 15mJetBlue
Thu 8/109:20LHR - PHL
1 stop14h 03mJetBlue
Deal found 27/12£644
Mon 29/1208:40PHL - LHR
1 stop17h 15mJetBlue
Wed 7/109:20LHR - PHL
1 stop14h 03mJetBlue
Deal found 27/12£675
Wed 31/1208:40PHL - LHR
1 stop17h 15mJetBlue
Wed 7/109:20LHR - PHL
1 stop14h 03mJetBlue
Deal found 27/12£722
Fri 26/1219:05PHL - LHR
1 stop30h 50mJetBlue
Mon 29/1209:20LHR - PHL
1 stop13h 50mJetBlue
Deal found 25/12£801
Wed 31/1217:30PHL - LHR
1 stop9h 35mMultiple Airlines
Sat 10/114:50LHR - PHL
2 stops46h 57mMultiple Airlines
Deal found 27/12£823
Wed 31/1208:40PHL - LHR
1 stop17h 15mJetBlue
Sat 3/109:20LHR - PHL
1 stop27h 35mJetBlue
Deal found 25/12£824
Wed 31/1208:40PHL - LHR
1 stop17h 15mMultiple Airlines
Wed 7/118:00LHR - PHL
2 stops25h 47mMultiple Airlines
Deal found 27/12£830
Tue 30/1217:30PHL - LHR
1 stop9h 35mMultiple Airlines
Sat 10/114:50LHR - PHL
2 stops46h 57mMultiple Airlines
Deal found 27/12£843
Wed 31/1215:30PHL - LHR
1 stop10h 40mAir Canada
Fri 9/113:00LHR - PHL
1 stop14h 46mAir Canada
Deal found 26/12£851
Best flights from Philadelphia to Heathrow
Discover carefully curated flight deals from Philadelphia to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 December 2025.
Thu 22/113:30PHL - LHR
1 stop12h 25mJetBlue
Tue 27/109:20LHR - PHL
1 stop14h 03mJetBlue
Deal found 26/12£474
Thu 5/211:22PHL - LHR
3 stops24h 03mScandinavian Airlines
Tue 10/206:40LHR - PHL
2 stops19h 36mScandinavian Airlines
Deal found 27/12£521
Mon 19/115:30PHL - LHR
1 stop10h 40mUnited Airlines
Wed 28/106:35LHR - PHL
2 stops21h 11mUnited Airlines
Deal found 25/12£529
Sat 7/315:02PHL - LHR
1 stop10h 53mJetBlue
Sun 15/309:20LHR - PHL
1 stop16h 27mJetBlue
Deal found 26/12£474
Sun 18/106:02PHL - LHR
2 stops28h 58mScandinavian Airlines
Tue 10/207:05LHR - PHL
3 stops19h 11mScandinavian Airlines
Deal found 27/12£527
Tue 20/115:30PHL - LHR
1 stop10h 40mUnited Airlines
Thu 29/108:30LHR - PHL
1 stop12h 35mUnited Airlines
Deal found 26/12£533
Mon 30/308:41PHL - LHR
1 stop16h 49mJetBlue
Tue 7/408:40LHR - PHL
1 stop13h 50mJetBlue
Deal found 26/12£487
Tue 27/111:22PHL - LHR
3 stops24h 03mScandinavian Airlines
Mon 9/206:40LHR - PHL
2 stops19h 36mScandinavian Airlines
Deal found 26/12£527
Sat 21/206:00PHL - LHR
1 stop19h 55mJetBlue
Mon 2/309:20LHR - PHL
1 stop18h 16mJetBlue
Deal found 27/12£494
Fri 10/408:50PHL - LHR
1 stop16h 40mJetBlue
Sat 18/408:40LHR - PHL
1 stop18h 00mJetBlue
Deal found 27/12£498
Fri 6/315:02PHL - LHR
1 stop10h 53mJetBlue
Fri 13/309:20LHR - PHL
1 stop14h 05mJetBlue
Deal found 27/12£500
Wed 13/508:25PHL - LHR
1 stop17h 05mJetBlue
Mon 18/508:40LHR - PHL
1 stop13h 58mJetBlue
Deal found 27/12£513
Direct flights from Philadelphia to Heathrow
Explore direct flight options from Philadelphia to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 27 December 2025.
Sun 18/118:35PHL - LHR
Nonstop7h 00mBritish Airways
Tue 24/210:15LHR - PHL
Nonstop8h 10mBritish Airways
Deal found 27/12£531
Tue 3/318:35PHL - LHR
Nonstop7h 00mFinnair
Tue 10/310:05LHR - PHL
Nonstop8h 05mFinnair
Deal found 27/12£536
Sun 18/119:50PHL - LHR
Nonstop7h 00mFinnair
Tue 27/110:35LHR - PHL
Nonstop8h 15mFinnair
Deal found 27/12£540
Mon 13/419:40PHL - LHR
Nonstop7h 10mBritish Airways
Tue 28/409:15LHR - PHL
Nonstop8h 00mBritish Airways
Deal found 25/12£542
Sun 29/322:20PHL - LHR
Nonstop7h 00mBritish Airways
Fri 17/412:30LHR - PHL
Nonstop8h 00mBritish Airways
Deal found 27/12£550
Mon 30/318:45PHL - LHR
Nonstop7h 05mBritish Airways
Fri 10/413:45LHR - PHL
Nonstop7h 55mBritish Airways
Deal found 26/12£555
Sun 25/118:35PHL - LHR
Nonstop7h 00mBritish Airways
Sun 1/213:10LHR - PHL
Nonstop8h 05mBritish Airways
Deal found 26/12£555
Mon 23/219:45PHL - LHR
Nonstop7h 05mBritish Airways
Tue 3/310:15LHR - PHL
Nonstop8h 10mBritish Airways
Deal found 27/12£561
Fri 23/118:35PHL - LHR
Nonstop7h 00mBritish Airways
Tue 27/110:35LHR - PHL
Nonstop8h 15mBritish Airways
Deal found 25/12£567
Fri 13/219:45PHL - LHR
Nonstop7h 05mBritish Airways
Wed 18/213:10LHR - PHL
Nonstop8h 05mBritish Airways
Deal found 27/12£567
Last-minute flights from Philadelphia to Heathrow
Discover last-minute flight deals from Philadelphia to Heathrow. Data last updated 27 December 2025 and is based on user searches.
Mon 12/113:30PHL - LHR
1 stop12h 25mJetBlue
Thu 15/109:20LHR - PHL
1 stop14h 03mJetBlue
Deal found 27/12£485
Tue 13/108:40PHL - LHR
1 stop17h 15mJetBlue
Sat 2/508:40LHR - PHL
1 stop18h 00mJetBlue
Deal found 27/12£487
Sat 17/108:40PHL - LHR
1 stop17h 15mJetBlue
Mon 9/209:20LHR - PHL
1 stop14h 03mJetBlue
Deal found 27/12£475
Sun 18/108:40PHL - LHR
1 stop17h 15mJetBlue
Tue 27/109:20LHR - PHL
1 stop14h 03mJetBlue
Deal found 26/12£470
Sun 18/106:02PHL - LHR
2 stops28h 58mScandinavian Airlines
Tue 27/106:40LHR - PHL
2 stops19h 36mScandinavian Airlines
Deal found 27/12£477
Sun 18/108:40PHL - LHR
1 stop17h 15mJetBlue
Tue 24/209:20LHR - PHL
1 stop18h 16mJetBlue
Deal found 27/12£486
Sun 18/115:30PHL - LHR
1 stop10h 40mAir Canada
Tue 27/106:50LHR - PHL
2 stops12h 57mAir Canada
Deal found 27/12£494
Fri 23/113:30PHL - LHR
1 stop12h 25mJetBlue
Tue 27/109:20LHR - PHL
1 stop14h 03mJetBlue
Deal found 25/12£474
Fri 23/108:40PHL - LHR
1 stop17h 15mJetBlue
Fri 30/109:20LHR - PHL
1 stop14h 03mJetBlue
Deal found 26/12£482
Wed 28/108:40PHL - LHR
1 stop18h 10mMultiple Airlines
Mon 9/209:40LHR - PHL
1 stop13h 43mMultiple Airlines
Deal found 27/12£481
One-way flights from Philadelphia to Heathrow
Search for one-way flight options from Philadelphia to Heathrow. Find affordable one-way fares based on user searches. Data last updated 27 December 2025.
Sat 24/105:30PHL - LHR
2 stops26h 20mMultiple Airlines
Deal found 27/12£182
Tue 27/106:00PHL - LHR
2 stops25h 50mMultiple Airlines
Deal found 27/12£186
Mon 23/221:00PHL - LHR
2 stops36h 25mMultiple Airlines
Deal found 26/12£187
Mon 26/113:30PHL - LHR
1 stop12h 25mJetBlue
Deal found 27/12£190
Thu 26/206:00PHL - LHR
1 stop19h 55mJetBlue
Deal found 26/12£190
Tue 24/209:53PHL - LHR
2 stops23h 32mMultiple Airlines
Deal found 26/12£192
Mon 16/318:12PHL - LHR
2 stops40h 13mMultiple Airlines
Deal found 26/12£197
Mon 9/208:20PHL - LHR
3 stops47h 30mMultiple Airlines
Deal found 26/12£198
Find flight deals from Philadelphia to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Heathrow (LHR). 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 27 December 2025.
Customise your flight search to find flights from Philadelphia to Heathrow 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 27 December 2025.
Use the filters below to find and compare flights from Philadelphia to London Heathrow Airport that are best for you.
Fly from
Philadelphia
Fly to
Heathrow
Route
Depart
Return
Price
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Thu 22/1
13:30-06:55
1 stop12h 25m
London Heathrow
Tue 27/1
09:20-18:23
1 stop14h 03m
£474
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Sat 7/3
15:02-06:55
1 stop10h 53m
London Heathrow
Sun 15/3
09:20-21:47
1 stop16h 27m
£474
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Mon 30/3
08:41-06:30
1 stop16h 49m
London Heathrow
Tue 7/4
08:40-17:30
1 stop13h 50m
£487
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Sat 21/2
06:00-06:55
1 stop19h 55m
London Heathrow
Mon 2/3
09:20-22:36
1 stop18h 16m
£494
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Fri 10/4
08:50-06:30
1 stop16h 40m
London Heathrow
Sat 18/4
08:40-21:40
1 stop18h 00m
£498
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Fri 6/3
15:02-06:55
1 stop10h 53m
London Heathrow
Fri 13/3
09:20-19:25
1 stop14h 05m
£500
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Wed 13/5
08:25-06:30
1 stop17h 05m
London Heathrow
Mon 18/5
08:40-17:38
1 stop13h 58m
£513
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Thu 5/2
11:22-16:25
3 stops24h 03m
London Heathrow
Tue 10/2
06:40-21:16
2 stops19h 36m
£521
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Sun 18/1
06:02-16:00
2 stops28h 58m
London Heathrow
Tue 10/2
07:05-21:16
3 stops19h 11m
£527
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Tue 27/1
11:22-16:25
3 stops24h 03m
London Heathrow
Mon 9/2
06:40-21:16
2 stops19h 36m
£527
Flights are sorted by cheapest return flights first.
Deals found on 26/12
Showing 1-10 of 21 results
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Best time to book a flight from Philadelphia to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Philadelphia with our price prediction graph.
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 Philadelphia to London Heathrow Airport
Prices
Airlines
More
How far ahead should I book a flight from Philadelphia to London Heathrow Airport?
Use this chart to determine the optimal time to book a return flight from Philadelphia to Heathrow. Price data was last updated on 26 December 2025.
The best time to book flights from Philadelphia to London Heathrow Airport is 9 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 Philadelphia to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from Philadelphia to London Heathrow Airport (average of £289). Flying from Philadelphia to London Heathrow Airport in June is currently the most expensive (average of £427). 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 PHL to LHR?
Find hourly flight availability from Philadelphia to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 December 2025.
Unlike in the morning, when flights are generally more expensive, you can save up to 11% on flights from Philadelphia to London Heathrow Airport by exploring options for tickets at midday.
Weekly flight availability from Philadelphia to London Heathrow Airport
Explore weekly flight availability from Philadelphia to Heathrow. 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 27 December 2025.
The most flights from PHL to LHR 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).
What’s the top stopover airport for flights from Philadelphia to London Heathrow Airport?
Share of one-stop return flights from Philadelphia to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Boston (BOS) – chosen by Cheapflights users on 75% of one-stop itineraries from Philadelphia to London Heathrow Airport on Cheapflights.
What’s the cheapest stopover airport for flights from Philadelphia to London Heathrow Airport?
Average return fare for one-stop flights from Philadelphia to London Heathrow Airport, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Dublin (DUB) is the most affordable one-stop option, with an average return flight price of £503.
What’s the fastest stopover option from Philadelphia to London Heathrow Airport?
Shortest average travel time for one-stop one-way flights from Philadelphia to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 9h 48m.
Which airport typically offers the quickest stopover for flights from Philadelphia to London Heathrow Airport?
Average stopover duration for one-stop one-way flights from Philadelphia to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Dublin (DUB) offer the fastest connection on this route, with an average stopover time of 1h 41m.
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 27 December 2025.
Get a feel of what it's like to fly with American Airlines, Aer Lingus, andJetBlue from Philadelphia to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
Related info for your journey
Find useful and relevant information for your journey from Philadelphia to Heathrow. 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 from for flights from Philadelphia to London Heathrow?
Philadelphia (PHL) is the airport you will fly out of if you book a flight from Philadelphia to London Heathrow. You should not have trouble finding flights to London Heathrow from Philadelphia; the airport handles an average of 10 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 4 airlines have flights from the Philadelphia airport to London Heathrow. It is only a 7.0 mi journey to Philadelphia (PHL) from Philadelphia’s city center.
How long is the flight from Philadelphia to London Heathrow Airport?
For as low as £474, JetBlue can have you in London Heathrow Airport from Philadelphia in 12h 25m. Philadelphia and London Heathrow Airport are separated by a distance of 3533 mi.
What are the cheapest airlines flying from Philadelphia to London Heathrow Airport round-trip?
Our cheapest airline available from Philadelphia to London Heathrow Airport is British Airways. Our recent data shows that you can find tickets from as low as £382 on this airline. Additional options worth looking into are Aer Lingus and JetBlue, starting at £389 and £424 round-trip. Users have found that British Airways is 37% cheaper than the other options available to this destination.
What are the most reliable airlines from Philadelphia to London Heathrow Airport?
Consider Finnair (90%), Malaysia Airlines (89%) or American Airlines (87%) when booking your flight. These represent the most reliable airlines when flying from Philadelphia to London Heathrow Airport.
What are the cheapest flights from Philadelphia to London Heathrow Airport?
The cheapest flight price from Philadelphia to London Heathrow Airport is £283. On average you can expect to pay £1,081. The most popular route, (Philadelphia - London Heathrow), can usually be booked for £467.
Can I find deals for business class flights from Philadelphia to Heathrow?
Yes. Cheapflights offers flight deals from Philadelphia to Heathrow 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 Philadelphia to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from Philadelphia to London Heathrow Airport (average of £289). Flying from Philadelphia to London Heathrow Airport in June is currently the most expensive (average of £427). 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.
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 27 December 2025.
Top 4 airlines flying from Philadelphia to Heathrow
Discover the top 4 airlines that operate flights from Philadelphia to Heathrow. 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 27 December 2025.
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 Philadelphia to Heathrow?
Cheapflights makes it easy to find Philadelphia to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Philadelphia to Heathrow?
Millions of users choose and trust Cheapflights to book the best flight deals from Philadelphia to Heathrow 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 Philadelphia to Heathrow with no change fees?
Need flexible booking options for your flight to Heathrow from Philadelphia? 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 Philadelphia to Heathrow become cheaper?
Yes! Start tracking prices for Philadelphia to Heathrow 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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