Flight Routes from London Heathrow to Philadelphia

Trip type

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
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
Best option
London Heathrow
Philadelphia
Outbound
17/08/26
direct
IB3519
07h 55min
Return
15/09/26
direct
IB4672
07h 15min
Iberia ?
£766
London Heathrow
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 Heathrow
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 Heathrow
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 Heathrow
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 Heathrow
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 Heathrow
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
London Heathrow
Philadelphia
Outbound
25/05/26
direct
BA0067
07h 55min
Return
07/06/26
1 Stopover (BOS)
BA6808, BA1540
09h 30min
British Airways
£611
London Heathrow
Philadelphia
Outbound
25/05/26
direct
AY5467
07h 55min
Return
07/06/26
1 Stopover (BOS)
BA6805, BA0238
18h 20min
Finnair ?
£623
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 £570.99
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