Flights from London Heathrow to Philadelphia

Our cheapest offers for flights from London Heathrow to Philadelphia

Here you can compare cheap flights from London Heathrow (LHR) 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 Heathrow
Philadelphia
Outbound
16/04/25
1 Stopover (FRA)
LH0921, LH4272
14h 30min
Return
30/04/25
1 Stopover (FRA)
LH4273, LH0916
19h 05min
Lufthansa
£550
Best option
London Heathrow
Philadelphia
Outbound
16/04/25
direct
BA0067
07h 55min
Return
30/04/25
direct
BA1587
07h 10min
British Airways ?
£561
London Heathrow
Philadelphia
Outbound
13/05/25
2 Stopovers (FRA, BOS)
LH0921, DE2038, B62659
21h 57min
Return
03/06/25
2 Stopovers (BOS, FRA)
B61160, DE2039, LH0904
19h 24min
Lufthansa, Condor, JetBlue Airways
£1,226
London Heathrow
Philadelphia
Outbound
16/04/25
1 Stopover (FRA)
LH0921, LH4272
14h 30min
Return
30/04/25
1 Stopover (FRA)
LH4273, LH0916
19h 05min
Lufthansa
£552
London Heathrow
Philadelphia
Outbound
16/04/25
1 Stopover (FRA)
UA8810, UA9658
11h 30min
Return
30/04/25
1 Stopover (ORD)
UA0622, UA0920
17h 49min
United Airlines ?
£563
London Heathrow
Philadelphia
Outbound
16/04/25
1 Stopover (FRA)
UA8810, UA9658
11h 30min
Return
30/04/25
1 Stopover (YUL)
UA6616, UA8068
13h 30min
United Airlines ?
£567
London Heathrow
Philadelphia
Outbound
21/04/25
1 Stopover (YUL)
AC0867, AC8859
10h 17min
Return
02/05/25
1 Stopover (YUL)
AC8858, AC0866
15h 45min
Air Canada
£570
London Heathrow
Philadelphia
Outbound
13/05/25
1 Stopover (MAD)
AA6800, AA0741
14h 40min
Return
09/06/25
1 Stopover (YUL)
AA5777, AA6919
31h 45min
American Airlines ?
£570
London Heathrow
Philadelphia
Outbound
16/04/25
direct
BA1538
07h 45min
Return
30/04/25
1 Stopover (DUB)
BA1579, BA5954
09h 40min
British Airways
£572
London Heathrow
Philadelphia
Outbound
16/04/25
1 Stopover (FRA)
LH0901, LH4272
11h 30min
Return
30/04/25
1 Stopover (FRA)
LH4273, LH0916
19h 05min
Lufthansa
£572
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 Heathrow to Philadelphia

Favourite airline: Aer Lingus
76 % of flights booked on the route from London Heathrow to Philadelphia are booked with Aer Lingus, British Airways and United Airlines.
Aer Lingus
45 %
British Airways
21 %
United Airlines
10 %
Stopover flights are the cheapest connection
Compared to flights with a stopover, direct flights are £325.00 more expensive on this route.
non stop flight
1 stop
2 stops
08h 20min
11h 10min
51h 25min
1 034 £
709 £
1 282 £
Favourite connection: via Dublin
When booking flights from London Heathrow to Philadelphia 59 % of travellers prefer to fly via Dublin.
Route
bookings
1 stopover Dublin
11h 10min, from 709 £
59 %
Direct flights
08h 20min, from 1 034 £
19 %
1 stopover Montréal-Pierre Elliott Trudeau International Airport
30h 04min, from 839 £
11 %

Important flight information

Flight information: London Heathrow - Philadelphia

Outbound and return from 549,29 £
Flight duration min. 08:10 / max. 08:45
Return flight duration min. 07:00/ max. 07:25
Distance 5696 km
Flights per week 23
Departure airport Airport London Heathrow (LHR)
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