Flight Routes from Philadelphia to London

Trip type

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
08/20/26
1 Stopover (BOS)
B61160, B61620
17h 02min
Return
08/25/26
1 Stopover (BOS)
B61621, B62459
16h 20min
JetBlue Airways
$976
Best option
Philadelphia
London
Outbound
08/20/26
direct
IB4672
07h 05min
Return
08/25/26
direct
IB3519
07h 55min
Iberia ?
$999
Philadelphia
London
Outbound
06/25/26
2 Stopovers (ATL, CPH)
SK3552, SK0930, SK1517
22h 11min
Return
06/30/26
2 Stopovers (CPH, BOS)
SK0500, SK0927, SK3108
20h 57min
SAS Scandinavian Airlines
$1,445
Philadelphia
London
Outbound
08/20/26
1 Stopover (ORD)
UA2632, UA0929
14h 42min
Return
08/25/26
1 Stopover (FRA)
UA8810, UA9658
11h 35min
United Airlines
$1,037
Philadelphia
London
Outbound
08/20/26
1 Stopover (YUL)
UA6616, UA8068
13h 35min
Return
08/25/26
1 Stopover (FRA)
LH4233, LH4272
14h 35min
United Airlines ?
$1,038
Philadelphia
London
Outbound
08/20/26
direct
AY3804
07h 25min
Return
08/25/26
1 Stopover (EDI)
AY5967, AY3853
23h 35min
Finnair
$1,050
Philadelphia
London
Outbound
08/20/26
direct
BA1533
07h 05min
Return
08/25/26
direct
BA0067
07h 55min
British Airways ?
$1,063
Philadelphia
London
Outbound
08/20/26
direct
IB4672
07h 05min
Return
08/25/26
direct
IB4673
08h 05min
Iberia
$1,067
Philadelphia
London
Outbound
08/20/26
1 Stopover (ORD)
UA2784, UA0929
12h 10min
Return
08/25/26
1 Stopover (FRA)
UA8810, UA9658
11h 35min
United Airlines ?
$1,149
Philadelphia
London
Outbound
06/25/26
2 Stopovers (YYZ, LIS)
AC8511, TP0262, TP1350
30h 45min
Return
06/30/26
1 Stopover (YUL)
AA6920, AA6029
20h 34min
Air Canada, TAP Air Portugal ?
$1,168
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 976,00 $
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 (LON)
Destination country Flights to United Kingdom
Departure airport - Destination country Philadelphia International Airport, PA - United Kingdom
Alternative routes to United Kingdom
Alternative flights to London
Flight destinations with a similar price
Flight destinations with a similar price