Cheap flights from Philadelphia to London from £169
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LON
22 Oct — 29 Oct1
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.
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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 22 September 2026.
Tue 3/1118:35 -
Nonstop7h 00m
Fri 13/1113:10 -
Nonstop8h 05m
Deal found 17/9£590
Thu 15/1015:25 -
2 stops24h 30m
Thu 22/1006:40 -
2 stops19h 52m
Deal found 17/9£590
Wed 25/1112:20 -
2 stops13h 55m
Wed 9/1208:40 -
2 stops15h 43m
Deal found 21/9£591
Thu 5/1119:40 -
Nonstop7h 10m
Tue 10/1106:30 -
1 stop12h 30m
Deal found 21/9£592
Sun 8/1120:50 -
1 stop10h 50m
Tue 17/1108:40 -
1 stop11h 45m
Deal found 18/9£592
Wed 21/1010:22 -
2 stops18h 28m
Wed 28/1006:10 -
1 stop15h 00m
Deal found 21/9£592
Thu 5/1110:27 -
2 stops17h 03m
Wed 11/1108:50 -
1 stop12h 20m
Deal found 17/9£592
Wed 21/1022:10 -
Nonstop7h 10m
Mon 26/1006:30 -
1 stop12h 20m
Deal found 17/9£593
Tue 10/1110:27 -
2 stops16h 48m
Sun 15/1106:30 -
1 stop14h 40m
Deal found 17/9£593
Thu 8/1020:02 -
2 stops32h 58m
Wed 14/1014:00 -
2 stops25h 18m
Deal found 17/9£593
Thu 15/1015:25 -
2 stops23h 35m
Thu 22/1007:00 -
3 stops20h 46m
Deal found 17/9£593
Thu 5/1115:20 -
2 stops24h 40m
Thu 12/1106:00 -
2 stops37h 44m
Deal found 21/9£593
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 22 September 2026.
Sun 17/121:10 -
1 stop10h 10m
Sat 23/112:45 -
1 stop30h 20m
Deal found 17/9£605
Tue 24/1112:19 -
1 stop14h 56m
Mon 30/1119:50 -
1 stop24h 05m
Deal found 19/9£610
Wed 11/1120:50 -
1 stop10h 30m
Tue 17/1108:40 -
1 stop11h 45m
Deal found 21/9£614
Mon 23/1112:20 -
2 stops13h 05m
Tue 1/1208:40 -
2 stops15h 50m
Deal found 19/9£623
Mon 12/1010:40 -
2 stops14h 15m
Mon 26/1011:10 -
2 stops15h 46m
Deal found 17/9£634
Tue 1/1209:30 -
1 stop16h 25m
Sat 5/1209:20 -
1 stop14h 23m
Deal found 21/9£669
Tue 1/1209:30 -
2 stops19h 20m
Tue 8/1210:40 -
2 stops37h 03m
Deal found 19/9£712
Tue 6/1019:10 -
1 stop13h 30m
Mon 12/1019:00 -
1 stop23h 05m
Deal found 18/9£615
Sun 29/1108:00 -
1 stop17h 25m
Sun 6/1206:30 -
2 stops19h 22m
Deal found 21/9£625
Sat 21/1117:05 -
2 stops46h 55m
Sun 29/1107:30 -
1 stop13h 35m
Deal found 19/9£652
Tue 8/1219:50 -
Nonstop7h 00m
Sat 19/1220:00 -
1 stop24h 15m
Deal found 19/9£658
Thu 5/1118:35 -
Nonstop7h 00m
Sun 15/1113:10 -
Nonstop8h 05m
Deal found 17/9£665
Thu 5/1111:00 -
1 stop14h 50m
Fri 13/1106:20 -
2 stops19h 34m
Deal found 17/9£627
Wed 28/1010:27 -
2 stops17h 48m
Wed 4/1108:40 -
1 stop12h 30m
Deal found 16/9£635
Fri 15/109:30 -
2 stops25h 15m
Mon 18/116:35 -
2 stops32h 34m
Deal found 19/9£721
Fri 8/114:37 -
2 stops13h 33m
Sun 17/107:30 -
1 stop13h 35m
Deal found 21/9£659
Sun 18/1018:35 -
1 stop10h 45m
Tue 27/1006:50 -
1 stop12h 00m
Deal found 18/9£675
Wed 28/1018:40 -
1 stop9h 35m
Tue 3/1107:15 -
1 stop13h 55m
Deal found 16/9£641
Wed 3/309:54 -
2 stops24h 11m
Mon 15/310:40 -
2 stops26h 24m
Deal found 19/9£721
Fri 16/1015:25 -
1 stop13h 35m
Sat 24/1012:40 -
2 stops15h 06m
Deal found 17/9£667
Wed 4/1110:27 -
2 stops16h 48m
Wed 11/1108:40 -
1 stop12h 30m
Deal found 20/9£643
Wed 21/1018:35 -
1 stop10h 45m
Mon 26/1006:50 -
1 stop12h 00m
Deal found 19/9£712
Fri 6/1117:58 -
3 stops33h 22m
Fri 13/1116:40 -
2 stops33h 31m
Deal found 17/9£748
Tue 27/1009:15 -
3 stops30h 00m
Mon 9/1115:15 -
3 stops29h 50m
Deal found 21/9£644
Tue 3/1120:50 -
1 stop10h 50m
Tue 17/1106:50 -
1 stop12h 10m
Deal found 21/9£739
Mon 16/1117:58 -
2 stops16h 47m
Fri 20/1110:40 -
2 stops26h 40m
Deal found 19/9£751
Wed 7/1010:05 -
3 stops26h 05m
Tue 13/1007:10 -
3 stops19h 22m
Deal found 18/9£646
Sat 7/1117:58 -
3 stops21h 42m
Wed 11/1116:35 -
2 stops33h 36m
Deal found 21/9£777
Tue 8/1221:10 -
1 stop10h 30m
Sun 13/1219:25 -
1 stop23h 40m
Deal found 20/9£784
Tue 1/1209:30 -
2 stops20h 05m
Tue 8/1207:45 -
1 stop13h 25m
Deal found 18/9£652
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 22 September 2026.
Tue 3/1118:35 -
Nonstop7h 00m
Fri 13/1113:10 -
Nonstop8h 05m
Deal found 17/9£590
Tue 26/118:35 -
Nonstop7h 00m
Wed 10/213:10 -
Nonstop8h 05m
Deal found 21/9£593
Sun 29/1118:35 -
Nonstop7h 00m
Tue 2/213:10 -
Nonstop8h 05m
Deal found 18/9£593
Wed 25/1119:40 -
Nonstop7h 10m
Wed 2/1210:35 -
Nonstop8h 15m
Deal found 21/9£595
Sun 8/1119:40 -
Nonstop7h 10m
Wed 18/1110:35 -
Nonstop8h 05m
Deal found 19/9£602
Mon 23/1118:35 -
Nonstop7h 00m
Tue 1/1213:10 -
Nonstop8h 05m
Deal found 19/9£603
Tue 16/320:50 -
Nonstop7h 00m
Wed 31/312:00 -
Nonstop8h 00m
Deal found 21/9£605
Fri 6/1118:35 -
Nonstop7h 00m
Fri 13/1113:10 -
Nonstop8h 05m
Deal found 22/9£608
Sun 18/1018:45 -
Nonstop7h 05m
Sun 1/1113:10 -
Nonstop8h 05m
Deal found 19/9£608
Thu 15/1018:45 -
Nonstop7h 05m
Fri 30/1013:10 -
Nonstop8h 05m
Deal found 22/9£609
Thu 15/1018:45 -
Nonstop7h 05m
Thu 22/1013:45 -
Nonstop7h 55m
Deal found 17/9£610
Last-minute flights from Philadelphia to London
Discover last-minute flight deals from Philadelphia to London. Data last updated 22 September 2026 and is based on user searches.
Mon 28/916:20 -
2 stops17h 30m
Tue 6/1007:10 -
3 stops19h 22m
Deal found 21/9£596
Wed 30/920:25 -
1 stop11h 15m
Mon 5/1013:25 -
1 stop10h 30m
Deal found 18/9£593
Tue 6/1015:25 -
2 stops15h 25m
Tue 13/1006:50 -
2 stops13h 51m
Deal found 17/9£590
Thu 8/1020:02 -
2 stops32h 58m
Wed 14/1014:00 -
2 stops25h 18m
Deal found 17/9£593
Sun 11/1010:05 -
1 stop15h 25m
Fri 23/1009:30 -
2 stops18h 16m
Deal found 17/9£594
Tue 13/1012:32 -
2 stops13h 43m
Tue 20/1008:40 -
2 stops18h 27m
Deal found 19/9£591
Thu 15/1015:25 -
2 stops24h 30m
Thu 22/1006:40 -
2 stops19h 52m
Deal found 17/9£590
Thu 15/1015:25 -
2 stops23h 35m
Thu 22/1007:00 -
3 stops20h 46m
Deal found 17/9£593
Sun 18/1022:10 -
Nonstop7h 10m
Sun 1/1106:10 -
1 stop14h 25m
Deal found 19/9£595
Mon 19/1017:32 -
1 stop9h 28m
Mon 26/1006:30 -
1 stop12h 20m
Deal found 19/9£596
Wed 21/1019:35 -
Nonstop7h 15m
Mon 26/1006:30 -
1 stop12h 20m
Deal found 19/9£592
Wed 21/1022:10 -
Nonstop7h 10m
Mon 26/1006:30 -
1 stop12h 20m
Deal found 17/9£593
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 22 September 2026.
Tue 1/1216:38 -
2 stops57h 12m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 19/9£169
Tue 9/209:07 -
1 stop16h 43m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 20/9£195
Thu 4/218:37 -
2 stops34h 23m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 20/9£202
Thu 3/1208:34 -
2 stops44h 26m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 19/9£205
Wed 2/1208:34 -
2 stops17h 21m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 20/9£206
Sat 6/218:37 -
2 stops32h 38m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 20/9£212
Fri 5/207:06 -
1 stop21h 54m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 20/9£215
Wed 14/1017:22 -
2 stops35h 38m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 22/9£220
Sun 7/206:15 -
2 stops21h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 20/9£220
Sat 9/120:09 -
1 stop29h 06m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 19/9£221
Mon 16/1115:35 -
1 stop10h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 19/9£232
Sat 31/1007:42 -
3 stops58h 18m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 17/9£238
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 22 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 22 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 - LGW London Gatwick
PHLLGW
Philadelphia
Fri 9/10
10:37-10:00
1 stop18h 23m
London Gatwick
Wed 31/12
00:00-18:00
Nonstop0h 00m
£232
PhiladelphiaLondon
PHL Philadelphia - STN London Stansted
PHLSTN
Philadelphia
Sat 31/10
07:42-22:00
3 stops58h 18m
London Stansted
Wed 31/12
00:00-18:00
Nonstop0h 00m
£238
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Fri 23/10
10:22-06:30
1 stop15h 08m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£246
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Sun 15/11
10:27-06:55
1 stop15h 28m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£246
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Wed 17/3
09:54-06:55
1 stop17h 01m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£249
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
£265
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Sun 21/3
06:10-10:50
2 stops24h 40m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£265
PhiladelphiaLondon
PHL Philadelphia - LHR London Heathrow
PHLLHR
Philadelphia
Wed 17/3
10:05-10:50
2 stops20h 45m
London Heathrow
Wed 31/12
00:00-18:00
Nonstop0h 00m
£265
PhiladelphiaLondon
PHL Philadelphia - STN London Stansted
PHLSTN
Philadelphia
Mon 12/10
15:31-22:50
3 stops26h 19m
London Stansted
Wed 31/12
00:00-18:00
Nonstop0h 00m
£265
PhiladelphiaLondon
PHL Philadelphia - LGW London Gatwick
PHLLGW
Philadelphia
Wed 3/2
12:09-09:00
2 stops15h 51m
London Gatwick
Wed 31/12
00:00-18:00
Nonstop0h 00m
£268
Flights are sorted by cheapest return flights first.
Deals found on 20/9
Showing 1-10 of 60 resultsSorted by cheapest first
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2
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6
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
PHL-LGW
PHL-LTN
PHL-STN
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
PHL-LGW
PHL-LTN
PHL-STN
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 £546). Flying from Philadelphia to London in June is currently the most expensive (average of £1,108). 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 22 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 22 September 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 (12 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 £615 and £840 in November.The cheapest return price found within the last 5 days was £590 on British Airways (3 Nov–13 Nov).
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 22 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 2 different airlines.
How long is the flight from Philadelphia to London?
For as low as £590, 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 are the cheapest airlines flying from Philadelphia to London round-trip?
Flying on British Airways is currently your cheapest option to London, with prices starting at £513. Another option worth looking into is American Airlines, starting at £524 return. 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 £579, our data indicates the cheapest price to be £244. The most popular route (Philadelphia - London Heathrow), is priced around £419.
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 £546). Flying from Philadelphia to London in June is currently the most expensive (average of £1,108). 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 22 September 2026.
Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on 22 September 2026.
Discover the top 2 airlines 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 22 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!
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