Flight Routes from London to Philadelphia

Trip type

Our cheapest offers for flights from London to Philadelphia

Here you can compare cheap flights from London (LON) 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
Philadelphia
Outbound
25/05/26
1 Stopover (BOS)
B61926, B61159
25h 53min
Return
07/06/26
1 Stopover (BOS)
B60560, B62104
32h 10min
JetBlue Airways
£566
Best option
London
Philadelphia
Outbound
17/08/26
direct
IB3519
07h 55min
Return
15/09/26
direct
IB4672
07h 15min
Iberia ?
£766
London
Philadelphia
Outbound
08/08/26
2 Stopovers (CPH, ATL)
SK0500, SK0929, SK3739
22h 45min
Return
31/08/26
2 Stopovers (ATL, CPH)
SK3884, SK0930, SK1507
21h 25min
SAS Scandinavian Airlines
£814
London
Philadelphia
Please note: transfer for connecting flight
Outbound
03/08/26
1 Stopover (DUB)
FR1112, EI0115
11h 15min
Return
20/08/26
1 Stopover (MCO)
NK0463, Z00784
13h 37min
Ryanair, Aer Lingus Irish Airlines
£1,049
London
Philadelphia
Outbound
25/05/26
1 Stopover (FRA)
LH0901, LH4272
11h 35min
Return
07/06/26
2 Stopovers (YUL, YHZ)
AC8860, AC0668, AC0868
48h 35min
Lufthansa
£571
London
Philadelphia
Outbound
25/05/26
1 Stopover (RDU)
AA0173, AA5590
13h 10min
Return
07/06/26
1 Stopover (RDU)
AA0706, AA0174
30h 35min
American Airlines
£573
London
Philadelphia
Outbound
25/05/26
1 Stopover (FRA)
LH0901, LH4272
11h 35min
Return
07/06/26
2 Stopovers (YUL, YHZ)
AC8860, AC0668, AC0868
48h 35min
Lufthansa
£577
London
Philadelphia
Outbound
25/05/26
1 Stopover (IAD)
UA0925, UA4039
12h 01min
Return
07/06/26
1 Stopover (IAD)
UA4587, UA0918
30h 00min
United Airlines ?
£583
London
Philadelphia
Outbound
25/05/26
1 Stopover (FRA)
LH4233, LH4272
14h 35min
Return
07/06/26
1 Stopover (YUL)
AC8860, LH6839
10h 05min
Lufthansa
£609
London
Philadelphia
Outbound
25/05/26
1 Stopover (FRA)
LH4233, LH4272
14h 35min
Return
07/06/26
1 Stopover (YUL)
AC8860, LH6839
10h 05min
Lufthansa
£610
Prices based on recent searches, subject to last-minute changes
Page 1 / 5

Tips and tricks to help you find cheap flights from London to Philadelphia

Favourite airline: Aer Lingus
55 % of travellers choose to book flights on this route with Aer Lingus, British Airways and Virgin Atlantic.
Aer Lingus
29 %
British Airways
19 %
Virgin Atlantic
7 %
Stopover flights are the cheapest connection
Flights with a stopover are on average £325.00 cheaper than direct flights.
non stop flight
1 stop
2 stops
08h 20min
11h 10min
41h 43min
£1,034
£709
£827
Favourite connection: via Dublin
The most popular flights on this route are via Dublin and are booked by 52 % of all travellers.
Route
bookings
1 stopover Dublin
11h 10min, from £709
52 %
Direct flights
08h 20min, from £1,034
16 %
1 stopover Boston Logan
13h 19min, from £848
13 %

Important flight information

Flight information: London - Philadelphia

Outbound and return from £565.90
Flight duration min. 08:10 / max. 08:45
Return flight duration min. 07:00/ max. 07:25
Distance 5715 km
Flights per week 23
Departure airport Airport London (LCY, LGW, LHR, LTN, STN, SEN) (LON)
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