Flights from London Gatwick to Philadelphia

Our cheapest offers for flights from London Gatwick to Philadelphia

Here you can compare cheap flights from London Gatwick (LGW) to Philadelphia (PHL) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Philadelphia. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
London Gatwick
Philadelphia
Outbound
31/01/26
1 Stopover (BCN)
BA8055, BA1608
13h 50min
Return
03/02/26
1 Stopover (BCN)
BA1607, BA8062
16h 35min
British Airways
£568
London Gatwick
Philadelphia
Outbound
20/03/26
2 Stopovers (KEF, BOS)
FI0471, FI0635, FI7853
47h 38min
Return
17/04/26
2 Stopovers (BOS, KEF)
FI7854, FI0632, FI0472
25h 20min
Icelandair
£640
London Gatwick
Philadelphia
Outbound
31/01/26
1 Stopover (BCN)
VY7825, AA0743
13h 50min
Return
03/02/26
1 Stopover (MAD)
IB4674, IB1863
18h 05min
Vueling Airlines, American Airlines
£661
London Gatwick
Philadelphia
Outbound
20/03/26
2 Stopovers (KEF, BOS)
FI0471, FI0631, B60359
16h 18min
Return
17/04/26
2 Stopovers (BOS, KEF)
B60760, FI0632, FI0472
16h 37min
Icelandair, JetBlue Airways
£693
London Gatwick
Philadelphia
Outbound
22/12/25
2 Stopovers (ZRH, FRA)
LX0433, LX1068, LX9394
26h 25min
Return
10/01/26
2 Stopovers (YYZ, ZRH)
AC8935, AC0880, LX0432
20h 15min
Swiss International Air Lines
£702
London Gatwick
Philadelphia
Outbound
22/12/25
2 Stopovers (LIS, BOS)
TP1337, TP0217, B60159
44h 16min
Return
10/01/26
2 Stopovers (BOS, LIS)
TP4350, TP0218, TP1334
20h 10min
TAP Air Portugal, JetBlue Airways
£709
London Gatwick
Philadelphia
Outbound
22/12/25
3 Stopovers (OPO, LIS, BOS)
TP1331, TP1921, TP0217, B60159
39h 26min
Return
10/01/26
2 Stopovers (BOS, LIS)
TP4350, TP0218, TP1334
20h 10min
TAP Air Portugal, JetBlue Airways
£714
London Gatwick
Philadelphia
Outbound
22/12/25
2 Stopovers (ZRH, FRA)
LX0433, LX1068, LX9394
26h 25min
Return
10/01/26
2 Stopovers (ORD, ZRH)
LX3305, LX0009, LX0432
23h 40min
Swiss International Air Lines ?
£731
London Gatwick
Philadelphia
Outbound
20/03/26
2 Stopovers (KEF, BOS)
FI0471, FI0631, FI7855
16h 18min
Return
17/04/26
2 Stopovers (BOS, KEF)
FI7852, FI0632, FI0472
16h 37min
Icelandair ?
£741
London Gatwick
Philadelphia
Outbound
22/12/25
2 Stopovers (ZRH, FRA)
LX0433, LX1068, LX9394
26h 25min
Return
10/01/26
2 Stopovers (ORD, ZRH)
LX3305, LX0009, LX0432
23h 40min
Swiss International Air Lines ?
£772
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from London Gatwick to Philadelphia

Favourite airline: e.g. JetBlue Airways, Icelandair
Most travellers looking for flights on the route from London Gatwick to Philadelphia decide to book with JetBlue Airways.
JetBlue Airways
22 %
Icelandair
22 %
Virgin Atlantic
11 %
Favourite connection: via Boston
67 % of tickets booked on this route are for flights via Boston.
Route
bookings
1 stopover Boston Logan
27h 48min, from 921 £
67 %
2 stopovers New York John F Kennedy Atlanta International Airport, GA
41h 43min, from 827 £
33 %

Important flight information

Flight information: London Gatwick - Philadelphia

Outbound and return from 567,99 £
Distance 5725 km
Departure airport Airport London Gatwick (LGW)
Arrival airport Airport Philadelphia International Airport, PA (PHL)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Philadelphia
Flight destinations with a similar price