Cheap flights from Philadelphia to London from £224
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LON
2 Nov — 9 Nov1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Philadelphia to London are usually found in January or February, booked 67 days in advance, depart on a Tuesday or Monday and return on a Tuesday
Cheap flight deals from Philadelphia to London
Enter your travel dates to find the best prices.
Cheapest
Best
Direct
Last-minute
One-way
Cheapest flights from Philadelphia to London
Explore the most affordable flight options available from Philadelphia to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 October 2026.
Wed 2/1217:40 -
1 stop11h 30m
Wed 9/1209:50 -
1 stop11h 10m
Deal found 2/10£627
Fri 13/1110:27 -
1 stop15h 28m
Wed 23/1209:20 -
1 stop28h 19m
Deal found 1/10£647
Tue 17/1107:00 -
1 stop18h 55m
Tue 24/1106:30 -
1 stop12h 30m
Deal found 3/10£647
Wed 28/1006:30 -
1 stop20h 25m
Wed 4/1109:20 -
1 stop29h 17m
Deal found 28/9£648
Mon 26/1010:27 -
1 stop16h 28m
Tue 3/1109:20 -
1 stop12h 48m
Deal found 28/9£649
Wed 25/1109:10 -
1 stop16h 45m
Mon 30/1109:50 -
1 stop11h 20m
Deal found 2/10£650
Thu 12/1107:00 -
1 stop18h 55m
Tue 12/106:30 -
1 stop12h 35m
Deal found 29/9£650
Thu 3/1209:30 -
1 stop16h 25m
Mon 7/1206:30 -
1 stop12h 35m
Deal found 29/9£651
Wed 2/1209:30 -
1 stop16h 25m
Tue 8/1206:30 -
1 stop12h 35m
Deal found 2/10£652
Fri 4/1209:30 -
1 stop16h 25m
Thu 10/1209:20 -
1 stop14h 23m
Deal found 29/9£654
Mon 9/1110:27 -
1 stop15h 28m
Mon 16/1118:40 -
2 stops49h 04m
Deal found 28/9£656
Best flights from Philadelphia to London
Discover carefully curated flight deals from Philadelphia to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 3 October 2026.
Thu 22/1015:26 -
1 stop10h 04m
Mon 2/1109:20 -
1 stop16h 51m
Deal found 28/9£674
Wed 31/318:45 -
Nonstop7h 05m
Wed 7/408:20 -
Nonstop8h 00m
Deal found 1/10£715
Tue 10/1110:27 -
3 stops30h 08m
Tue 17/1118:30 -
2 stops31h 07m
Deal found 2/10£726
Mon 4/113:20 -
1 stop15h 35m
Fri 8/106:30 -
2 stops19h 04m
Deal found 2/10£731
Wed 28/1020:25 -
Nonstop7h 25m
Wed 4/1106:30 -
1 stop12h 30m
Deal found 30/9£737
Mon 9/1110:27 -
1 stop15h 28m
Sun 15/1109:20 -
1 stop12h 43m
Deal found 1/10£675
Mon 11/109:30 -
2 stops22h 10m
Sun 24/108:15 -
3 stops29h 22m
Deal found 2/10£741
Sun 8/1110:27 -
1 stop15h 28m
Sat 14/1109:20 -
1 stop16h 17m
Deal found 2/10£675
Tue 5/109:30 -
3 stops27h 00m
Mon 11/108:15 -
2 stops29h 22m
Deal found 30/9£743
Fri 15/109:30 -
1 stop16h 25m
Wed 20/109:20 -
1 stop15h 49m
Deal found 2/10£678
Sun 21/312:15 -
1 stop14h 40m
Tue 30/308:40 -
1 stop13h 52m
Deal found 29/9£693
Sun 25/1010:27 -
1 stop16h 28m
Thu 5/1109:20 -
1 stop16h 51m
Deal found 28/9£719
Direct flights from Philadelphia to London
Explore direct flight options from Philadelphia to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 3 October 2026.
Mon 30/1119:40 -
Nonstop7h 10m
Mon 7/1210:35 -
Nonstop8h 10m
Deal found 28/9£666
Mon 1/319:50 -
Nonstop7h 00m
Thu 4/313:10 -
Nonstop8h 05m
Deal found 29/9£689
Tue 12/118:35 -
Nonstop7h 00m
Tue 19/113:10 -
Nonstop8h 05m
Deal found 30/9£690
Wed 6/119:50 -
Nonstop7h 00m
Wed 13/110:35 -
Nonstop8h 15m
Deal found 29/9£691
Sun 21/319:35 -
Nonstop7h 00m
Wed 31/313:45 -
Nonstop7h 55m
Deal found 30/9£700
Sun 24/118:35 -
Nonstop7h 00m
Fri 29/113:10 -
Nonstop8h 05m
Deal found 28/9£705
Wed 10/218:35 -
Nonstop7h 00m
Wed 24/213:10 -
Nonstop8h 05m
Deal found 1/10£706
Wed 13/118:35 -
Nonstop7h 00m
Wed 20/113:10 -
Nonstop8h 05m
Deal found 2/10£707
Sun 10/118:35 -
Nonstop7h 00m
Wed 13/113:10 -
Nonstop8h 05m
Deal found 1/10£709
Wed 30/1218:35 -
Nonstop7h 00m
Mon 11/110:35 -
Nonstop8h 15m
Deal found 29/9£710
Tue 26/118:35 -
Nonstop7h 00m
Fri 5/213:10 -
Nonstop8h 05m
Deal found 28/9£712
Last-minute flights from Philadelphia to London
Discover last-minute flight deals from Philadelphia to London. Data last updated 3 October 2026 and is based on user searches.
Mon 26/1010:27 -
1 stop16h 28m
Tue 3/1109:20 -
1 stop12h 48m
Deal found 28/9£649
Wed 28/1006:30 -
1 stop20h 25m
Wed 4/1109:20 -
1 stop29h 17m
Deal found 28/9£648
Thu 5/1115:35 -
1 stop10h 20m
Sun 8/1109:20 -
1 stop12h 48m
Deal found 30/9£660
Sun 8/1110:27 -
1 stop15h 28m
Wed 18/1106:30 -
1 stop12h 30m
Deal found 29/9£651
Mon 9/1110:27 -
1 stop15h 28m
Mon 16/1118:40 -
2 stops49h 04m
Deal found 28/9£656
Thu 12/1107:00 -
1 stop18h 55m
Tue 12/106:30 -
1 stop12h 35m
Deal found 29/9£650
Fri 13/1110:27 -
1 stop15h 28m
Wed 23/1209:20 -
1 stop28h 19m
Deal found 1/10£647
Tue 17/1107:00 -
1 stop18h 55m
Tue 24/1106:30 -
1 stop12h 30m
Deal found 3/10£647
Wed 25/1109:10 -
1 stop16h 45m
Mon 30/1109:50 -
1 stop11h 20m
Deal found 2/10£650
One-way flights from Philadelphia to London
Search for one-way flight options from Philadelphia to London. Find affordable one-way fares based on user searches. Data last updated 3 October 2026.
Tue 16/210:30 -
1 stop17h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/9£224
Mon 16/1115:35 -
1 stop10h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/10£235
Thu 4/309:54 -
1 stop16h 01m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/10£238
Wed 2/1209:30 -
1 stop16h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/9£242
Tue 1/1209:30 -
1 stop16h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£243
Sun 15/1107:00 -
1 stop18h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/10£244
Sun 10/109:30 -
1 stop16h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£245
Fri 27/1113:25 -
1 stop12h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/10£246
Sat 14/1115:35 -
1 stop10h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/10£247
Mon 30/1119:45 -
1 stop30h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£247
Find flight deals from Philadelphia to London
Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to London (LON). 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 3 October 2026.
Customise your flight search to find flights from Philadelphia to London 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 7,457,451 searches. Data last updated 3 October 2026.
Use the filters below to find and compare flights from Philadelphia to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Fri 27/11
13:25-06:55
1 stop12h 30m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£246
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Sun 3/1
09:29-06:56
1 stop16h 27m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£252
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Wed 10/3
09:54-06:55
1 stop16h 01m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£252
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Tue 30/3
12:15-06:30
1 stop13h 15m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£252
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Tue 29/12
09:29-06:56
1 stop16h 27m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£252
Fastest return journey
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Tue 30/3
18:45-06:50
Nonstop7h 05m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£265
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Mon 29/3
18:45-06:50
Nonstop7h 05m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£265
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Sun 28/3
18:45-06:50
Nonstop7h 05m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£265
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Wed 10/3
13:00-09:00
2 stops15h 00m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£268
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Thu 22/10
15:26-06:30
1 stop10h 04m
London Heathrow
Mon 2/11
09:20-21:11
1 stop16h 51m
£674
Flights are sorted by cheapest return flights first.
Deals found on 1/10
Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Philadelphia to London
Have a flexible travel schedule? Discover the best time to fly to London from Philadelphia with our price prediction graph.
PHL-LON
PHL-LHR
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
PHL-LON
PHL-LHR
What is the cheapest month to book a flight from Philadelphia to London?
Currently, February is the cheapest month in which you can book a flight from Philadelphia to London (average of £556). Flying from Philadelphia to London in June is currently the most expensive (average of £1,121). 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 LON?
Find hourly flight availability from Philadelphia to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 October 2026.
When flying from Philadelphia to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from Philadelphia to London
Explore weekly flight availability from Philadelphia to London. 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 3 October 2026.
The most flights from PHL to LON are scheduled on a Friday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost for a return flight from Philadelphia to London?
Airfare is below average for this route at the moment.
Philadelphia to London flights typically cost between £665 and £858 in March.The cheapest return price found within the last 5 days was £611 on Multiple Airlines (21 Mar–31 Mar).
How far ahead should I book a flight from Philadelphia to London?
The price you pay for your flight from Philadelphia to London may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Reviews of airlines servicing London
Get insights into the airlines that provide service to London. 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 London. Reviews last updated 3 October 2026.
Read reviews from past customers who have flown with American Airlines,Iberia, andBritish Airways
from Philadelphia to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
Related info for your journey
Find useful and relevant information for your journey from Philadelphia to London. 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?
Located just 7.0 mi from the city center, Philadelphia is the airport most travelers will use when flying to London from Philadelphia. Booking flights from Philadelphia (PHL) to London should be relatively easy as there are 8 daily outbound flights to London from 1 airline.
How long is the flight from Philadelphia to London?
For as low as £674, JetBlue can have you in London from Philadelphia in 10h 04m. There are 3533 mi between Philadelphia and London.
What is the cheapest airline to fly from Philadelphia to London round-trip?
Flying on British Airways is currently your cheapest option to London, with prices starting at £519. British Airways is currently priced 30% below the average price you’ll pay for this route.
What are the most popular routes from Philadelphia to London?
The most popular route from Philadelphia to London is Philadelphia - London Heathrow. You may also consider Philadelphia - London Gatwick or Philadelphia - London City.
What are the most reliable airlines from Philadelphia to London?
Consider Malaysia Airlines (92%), American Airlines (88%) or British Airways (88%) when booking your flight. These represent the most reliable airlines when flying from Philadelphia to London.
What are the cheapest flights from Philadelphia to London?
Looking for the cheapest flight from Philadelphia to London? While on average our users pay £541, our data indicates the cheapest price to be £271. The most popular route (Philadelphia - London Heathrow), is priced around £599.
Can I find deals for business class flights from Philadelphia to London?
Yes. Cheapflights offers flight deals from Philadelphia to London 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?
Currently, February is the cheapest month in which you can book a flight from Philadelphia to London (average of £556). Flying from Philadelphia to London in June is currently the most expensive (average of £1,121). 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 London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 3 October 2026.
Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on 3 October 2026.
Discover the top airline that operate flights from Philadelphia to London. 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 7,457,451 searches. Data last updated 3 October 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 Philadelphia to London?
Cheapflights makes it easy to find Philadelphia to London 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 London?
Cheapflights simply makes it quick and affordable to book flights from Philadelphia to London by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Philadelphia to London with no change fees?
Certainly. Search results for flights to London from Philadelphia shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from Philadelphia to London become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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