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
London Gatwick
Philadelphia
Outbound
19/02/26
2 Stopovers (LIS, BOS)
TP1335, TP0215, TP4355
18h 33min
Return
22/02/26
2 Stopovers (BOS, LIS)
TP4352, TP0216, TP1336
15h 19min
TAP Air Portugal ?
£505
Best option
London Gatwick
Philadelphia
Outbound
19/02/26
1 Stopover (BCN)
BA8063, BA1608
13h 20min
Return
22/02/26
1 Stopover (BCN)
BA1607, BA8058
15h 05min
British Airways
£543
London Gatwick
Philadelphia
Outbound
08/12/25
2 Stopovers (ZRH, FRA)
LX0433, LX4814, LX9394
26h 25min
Return
24/12/25
2 Stopovers (YYZ, LIS)
AC8935, AC0810, TP1336
17h 30min
Swiss International Air Lines
£859
London Gatwick
Philadelphia
Outbound
08/12/25
1 Stopover (MCO)
AY5447, AA1706
27h 30min
Return
24/12/25
1 Stopover (MCO)
AA2253, AY5446
12h 55min
Finnair, American Airlines
£505
London Gatwick
Philadelphia
Outbound
19/02/26
2 Stopovers (LIS, BOS)
TP1335, TP0215, B60359
18h 33min
Return
22/02/26
2 Stopovers (BOS, LIS)
B60860, TP0216, TP1336
15h 19min
TAP Air Portugal, JetBlue Airways
£517
London Gatwick
Philadelphia
Outbound
08/12/25
1 Stopover (MCO)
AA7012, AA1706
27h 30min
Return
24/12/25
2 Stopovers (CLT, MCO)
AA2498, AA2818, AA7011
17h 55min
American Airlines ?
£543
London Gatwick
Philadelphia
Outbound
19/02/26
1 Stopover (MAD)
IB1864, IB4675
24h 55min
Return
22/02/26
2 Stopovers (BOS, MAD)
AA1874, IB0348, IB1861
32h 50min
Iberia
£545
London Gatwick
Philadelphia
Outbound
19/02/26
1 Stopover (BCN)
BA8063, BA1608
13h 20min
Return
22/02/26
1 Stopover (BCN)
BA1607, BA8058
15h 05min
British Airways
£555
London Gatwick
Philadelphia
Outbound
19/02/26
2 Stopovers (LIS, BOS)
TP1335, TP0215, TP4355
18h 33min
Return
22/02/26
2 Stopovers (BOS, LIS)
TP4352, TP0216, TP1336
15h 19min
TAP Air Portugal ?
£576
London Gatwick
Philadelphia
Outbound
08/12/25
1 Stopover (MCO)
IB3757, IB4127
32h 35min
Return
24/12/25
2 Stopovers (BOS, MAD)
IB4735, IB0348, IB1863
27h 30min
Iberia ?
£584
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 £504.33
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