Flights from Philadelphia to London

Our cheapest offers for flights from Philadelphia to London

Here you can compare cheap flights from Philadelphia (PHL) to London (LON) 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 London. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Philadelphia
London
Outbound
04/26/25
1 Stopover (ORD)
UA2665, UA0920
32h 49min
Return
05/23/25
1 Stopover (IAD)
UA0919, UA6125
11h 25min
United Airlines ?
$750
Best option
Philadelphia
London
Outbound
04/26/25
direct
AY5667
07h 10min
Return
05/23/25
direct
AY4050
07h 45min
Finnair
$802
Philadelphia
London
Outbound
04/26/25
1 Stopover (ATL)
VS4161, VS4044
31h 02min
Return
05/23/25
1 Stopover (ATL)
VS4009, VS2660
14h 02min
Virgin Atlantic Airways ?
$766
Philadelphia
London
Outbound
04/26/25
direct
IB4664
07h 10min
Return
05/23/25
direct
IB4673
07h 45min
Iberia
$810
Philadelphia
London
Outbound
04/26/25
direct
BA1587
07h 10min
Return
05/23/25
direct
BA0067
07h 55min
British Airways ?
$811
Philadelphia
London
Outbound
04/26/25
1 Stopover (YUL)
AC8858, AC0866
10h 00min
Return
05/23/25
1 Stopover (YUL)
AC0865, AC8859
29h 31min
Air Canada
$811
Philadelphia
London
Outbound
04/26/25
direct
BA0066
07h 10min
Return
05/23/25
direct
BA0067
07h 55min
British Airways ?
$826
Philadelphia
London
Outbound
04/26/25
1 Stopover (ORD)
UA2665, UA0920
32h 49min
Return
05/23/25
1 Stopover (YUL)
UA8297, UA8334
13h 16min
United Airlines ?
$843
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Philadelphia to London

Favorite airline: Aer Lingus
67 % of travelers choose to book flights on this route with Aer Lingus, United Airlines and British Airways.
Aer Lingus
26 %
United Airlines
25 %
British Airways
16 %
Direct flights are cheaper
Flights with a stopover are on average $21.00 more expensive than direct flights.
non stop flight
1 stop
2 stops
07h 05min
29h 10min
31h 12min
$578
$599
$602
Favourite connection: via Dublin
35 % of booked tickets on this route are for flights with a transfer in Dublin.
Route
bookings
1 stopover Dublin
10h 35min, from $719
35 %
1 stopover Montréal-Pierre Elliott Trudeau International Airport
09h 50min, from $678
25 %
Direct flights
07h 05min, from $578
20 %

Important flight information

Flight information: Philadelphia - London

Roundtrip from $749.68
Flight duration min. 07:00 / max. 07:25
Return flight duration min. 08:10/ max. 08:45
Distance 5715 km
Flights per week 24
Departure airport Airport Philadelphia International Airport, PA (PHL)
Arrival airport Airport London, all Airports (LCY, LGW, LHR, LTN, STN, SEN) (LON)
Destination country Flights to United Kingdom
Alternative routes to United Kingdom
Alternative flights to London
Flight destinations with a similar price
Flight destinations with a similar price