
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $643 (Kiwi.com) |
One-way from | $228 (Trip.com) |
Popular in | June |
Cheapest in | September |
Average price | $776 |
Good round-trip deal | $733 or less |
Good one-way deal | $432 or less |
Fly from
Fly to
Route
Depart
Return
PhiladelphiaLondon
PHL - STN
PHLSTN
Philadelphia
Tue 4/28
9:15 am-1:55 pm
3 stops23h 40m
London Stansted
Mon 5/4
8:50 pm-2:48 pm
3 stops22h 58m
PhiladelphiaLondon
PHL - STN
PHLSTN
Philadelphia
Sun 4/26
8:25 pm-4:50 pm
1 stop15h 25m
London Stansted
Sun 5/3
11:25 am-6:55 pm
1 stop12h 30m
PhiladelphiaLondon
PHL - STN
PHLSTN
Philadelphia
Thu 4/16
9:15 am-6:10 pm
3 stops27h 55m
London Stansted
Tue 4/21
3:10 pm-2:46 pm
3 stops28h 36m
PhiladelphiaLondon
PHL - STN
PHLSTN
Philadelphia
Mon 4/13
3:30 pm-3:30 pm
3 stops19h 00m
London Stansted
Mon 4/20
8:45 pm-2:46 pm
3 stops23h 01m
PhiladelphiaLondon
PHL - LTN
PHLLTN
Philadelphia
Mon 6/1
8:25 pm-12:45 pm
1 stop11h 20m
London Luton
Mon 6/8
8:15 am-6:55 pm
1 stop15h 40m
PhiladelphiaLondon
PHL - LTN
PHLLTN
Philadelphia
Sun 4/26
8:25 am-11:25 am
2 stops22h 00m
London Luton
Sun 5/3
9:00 am-6:55 pm
1 stop14h 55m
PhiladelphiaLondon
PHL - STN
PHLSTN
Philadelphia
Sun 5/10
8:25 am-12:55 pm
2 stops23h 30m
London Stansted
Sun 5/17
6:35 am-6:55 pm
1 stop17h 20m
PhiladelphiaLondon
PHL - LGW
PHLLGW
Philadelphia
Tue 5/12
8:25 am-2:40 pm
2 stops25h 15m
London Gatwick
Tue 5/19
1:00 pm-7:35 am
2 stops23h 35m
PhiladelphiaLondon
PHL - LHR
PHLLHR
Philadelphia
Mon 5/4
6:33 pm-5:45 pm
3 stops18h 12m
London Heathrow
Tue 5/12
8:00 am-7:35 am
2 stops28h 35m
PhiladelphiaLondon
PHL - LTN
PHLLTN
Philadelphia
Thu 4/16
9:15 am-2:35 pm
3 stops24h 20m
London Luton
Tue 4/21
3:15 pm-2:46 pm
3 stops28h 31m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, November is the cheapest month in which you can book a flight from Philadelphia to London (average of $282). Flying from Philadelphia to London in June is currently the most expensive (average of $534). 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.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to London as you normally would.
The most flights from PHL to LON 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).
Dublin (DUB) – chosen by Cheapflights users on 90% of 1-stop itineraries from Philadelphia to London on Cheapflights.
Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of $687.
Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 9h 35m.
Flights via Atlanta (ATL) offer the fastest connection on this route, with an average layover time of 1h 38m.
Comfort
Food
Boarding
Entertainment
Overall
Crew
Reviews
Firuz,Feb 2026
FRA - HEL
Comfort
Food
Boarding
Entertainment
Overall
Crew
Reviews
Firuz,Feb 2026
FRA - HEL
Comfort
Food
Boarding
Entertainment
Overall
Crew
Reviews
Firuz,Feb 2026
FRA - HEL
Comfort
Food
Boarding
Entertainment
Overall
Crew
Reviews
Firuz,Feb 2026
FRA - HEL
Comfort
Food
Boarding
Entertainment
Overall
Crew
Reviews
Firuz,Feb 2026
FRA - HEL
Comfort
Food
Boarding
Entertainment
Overall
Crew
Reviews
Firuz,Feb 2026
FRA - HEL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$503 | Average$744 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$514 | Average$797 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$515 | Average$840 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$522 | Average$761 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$560 | Average$1,276 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$587 | Average$813 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$593 | Average$647 | FlexibilityNo cancel fee | On-time62% |