Cheap flights from Philadelphia to London from £228
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LON
28 Oct — 4 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 28 September 2026.
Wed 7/1010:05 -
1 stop15h 25m
Tue 13/1014:05 -
1 stop12h 27m
Deal found 23/9£593
Wed 7/1010:34 -
1 stop15h 41m
Wed 14/1008:55 -
2 stops18h 12m
Deal found 24/9£594
Tue 27/1019:35 -
Nonstop7h 00m
Thu 12/1113:10 -
Nonstop8h 05m
Deal found 23/9£595
Wed 25/1116:25 -
1 stop9h 35m
Mon 30/1119:50 -
1 stop24h 05m
Deal found 23/9£596
Wed 7/1010:40 -
2 stops14h 50m
Wed 14/1012:40 -
2 stops13h 52m
Deal found 23/9£596
Mon 5/1007:00 -
1 stop18h 35m
Tue 27/1009:00 -
2 stops33h 44m
Deal found 23/9£597
Fri 16/1020:25 -
1 stop9h 50m
Tue 27/1008:50 -
1 stop12h 20m
Deal found 24/9£598
Sun 1/1105:45 -
1 stop20h 20m
Thu 12/1109:40 -
1 stop11h 11m
Deal found 23/9£599
Wed 14/1015:25 -
1 stop13h 35m
Mon 19/1020:05 -
2 stops25h 00m
Deal found 23/9£600
Sun 25/1018:40 -
1 stop9h 25m
Tue 3/1107:50 -
1 stop13h 20m
Deal found 24/9£601
Mon 12/1020:25 -
1 stop11h 15m
Mon 26/1009:50 -
1 stop11h 20m
Deal found 23/9£602
Tue 13/1017:29 -
2 stops13h 36m
Tue 27/1011:20 -
1 stop11h 58m
Deal found 23/9£602
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 28 September 2026.
Thu 5/1118:35 -
Nonstop7h 00m
Thu 12/1106:30 -
1 stop12h 30m
Deal found 23/9£598
Mon 9/1110:27 -
1 stop15h 28m
Wed 11/1109:20 -
1 stop12h 48m
Deal found 24/9£675
Tue 15/1214:08 -
1 stop11h 17m
Sun 10/108:55 -
1 stop13h 20m
Deal found 23/9£712
Tue 5/109:30 -
3 stops27h 00m
Mon 11/108:15 -
2 stops29h 22m
Deal found 27/9£741
Sat 9/118:35 -
Nonstop7h 00m
Sat 23/106:30 -
1 stop12h 35m
Deal found 27/9£757
Mon 2/1119:40 -
Nonstop7h 10m
Tue 10/1110:35 -
Nonstop8h 05m
Deal found 28/9£763
Wed 21/1012:25 -
2 stops22h 35m
Wed 28/1006:40 -
2 stops22h 16m
Deal found 26/9£790
Wed 25/1118:35 -
Nonstop7h 00m
Sat 5/1213:10 -
Nonstop8h 05m
Deal found 23/9£633
Wed 25/1113:25 -
1 stop12h 30m
Tue 1/1209:20 -
1 stop14h 23m
Deal found 23/9£698
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 28 September 2026.
Tue 27/1019:35 -
Nonstop7h 00m
Thu 12/1113:10 -
Nonstop8h 05m
Deal found 23/9£595
Mon 23/1118:35 -
Nonstop7h 00m
Thu 3/1213:10 -
Nonstop8h 05m
Deal found 23/9£608
Wed 11/1119:40 -
Nonstop7h 10m
Tue 24/1110:35 -
Nonstop8h 10m
Deal found 28/9£611
Wed 17/319:35 -
Nonstop7h 00m
Wed 31/312:00 -
Nonstop8h 00m
Deal found 23/9£612
Sun 21/319:35 -
Nonstop7h 00m
Thu 1/408:20 -
Nonstop8h 00m
Deal found 23/9£615
Thu 15/1018:45 -
Nonstop7h 05m
Wed 21/1013:45 -
Nonstop7h 55m
Deal found 23/9£615
Fri 8/119:50 -
Nonstop7h 00m
Wed 13/110:35 -
Nonstop8h 15m
Deal found 23/9£618
Fri 15/118:35 -
Nonstop7h 00m
Tue 26/113:10 -
Nonstop8h 05m
Deal found 23/9£618
Fri 5/218:35 -
Nonstop7h 00m
Tue 9/213:10 -
Nonstop8h 05m
Deal found 23/9£621
Tue 13/1019:35 -
Nonstop7h 15m
Wed 28/1010:35 -
Nonstop8h 00m
Deal found 23/9£625
Wed 28/1020:25 -
Nonstop7h 25m
Mon 2/1110:35 -
Nonstop8h 05m
Deal found 24/9£626
Sun 11/1022:10 -
Nonstop7h 10m
Tue 20/1013:00 -
Nonstop8h 00m
Deal found 24/9£627
Last-minute flights from Philadelphia to London
Discover last-minute flight deals from Philadelphia to London. Data last updated 28 September 2026 and is based on user searches.
Mon 5/1007:00 -
1 stop18h 35m
Tue 27/1009:00 -
2 stops33h 44m
Deal found 23/9£597
Tue 6/1015:25 -
1 stop10h 05m
Mon 12/1020:25 -
2 stops24h 40m
Deal found 23/9£612
Tue 6/1017:40 -
2 stops17h 45m
Mon 12/1019:15 -
2 stops25h 50m
Deal found 23/9£613
Tue 6/1015:25 -
1 stop10h 05m
Mon 12/1007:30 -
2 stops43h 02m
Deal found 23/9£615
Wed 7/1010:05 -
1 stop15h 25m
Tue 13/1014:05 -
1 stop12h 27m
Deal found 23/9£593
Wed 7/1010:34 -
1 stop15h 41m
Wed 14/1008:55 -
2 stops18h 12m
Deal found 24/9£594
Wed 7/1010:40 -
2 stops14h 50m
Wed 14/1012:40 -
2 stops13h 52m
Deal found 23/9£596
Wed 7/1015:25 -
1 stop10h 05m
Mon 12/1019:30 -
1 stop25h 35m
Deal found 25/9£609
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 28 September 2026.
Tue 23/313:41 -
1 stop16h 44m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 24/9£228
Wed 2/1209:30 -
1 stop16h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/9£242
Sun 10/109:30 -
1 stop16h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/9£245
Sat 14/1110:27 -
1 stop15h 28m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/9£248
Wed 24/312:15 -
1 stop14h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/9£251
Mon 28/1219:35 -
1 stop30h 21m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 23/9£252
Mon 8/321:10 -
1 stop10h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/9£255
Mon 2/1117:58 -
1 stop31h 57m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 24/9£257
Tue 24/1119:45 -
1 stop30h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 24/9£260
Sun 10/118:35 -
Nonstop7h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/9£261
Wed 11/1112:36 -
2 stops43h 14m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/9£263
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 28 September 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 28 September 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
Mon 9/11
10:27-06:55
1 stop15h 28m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£248
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
£251
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Wed 27/1
13:00-09:00
2 stops15h 00m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£266
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Wed 10/3
13:00-07:15
2 stops13h 15m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£267
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Sun 22/11
13:25-06:55
1 stop12h 30m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£271
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Thu 24/12
09:29-06:56
1 stop16h 27m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£287
Fastest return journey
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Mon 28/12
18:35-06:35
Nonstop7h 00m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£296
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Fri 1/1
12:55-07:45
1 stop13h 50m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£305
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Sat 26/12
19:32-06:25
1 stop29h 53m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£308
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Tue 24/11
13:25-06:55
1 stop12h 30m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£319
Flights are sorted by cheapest return flights first.
Deals found on 27/9
Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3
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 £552). Flying from Philadelphia to London in June is currently the most expensive (average of £1,119). 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 28 September 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 28 September 2026.
The most flights from PHL to LON are scheduled on a Monday (15 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (11 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 £664 and £856 in October.The cheapest return price found within the last 5 days was £593 on Air Canada (11 Oct–28 Oct).
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 28 September 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 13 daily outbound flights to London from 1 airline.
How long is the flight from Philadelphia to London?
For as low as £598, British Airways can have you in London from Philadelphia in 7h. There are 3533 mi between Philadelphia and London. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
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 £518. 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 (82%), American Airlines (78%) or Finnair (78%) 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 £559, our data indicates the cheapest price to be £271. The most popular route (Philadelphia - London Heathrow), is priced around £565.
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 £552). Flying from Philadelphia to London in June is currently the most expensive (average of £1,119). 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 28 September 2026.
Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on 28 September 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 28 September 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!
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review your choices and withdraw your consent at any time by clicking the ’Privacy Preferences’ link in the page side navigation.