Flights from London to San Francisco

Our cheapest offers for flights from London to San Francisco

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

Outbound Return Airlines Shop Baggage Price
London
San Francisco
Outbound
10/19/25
3 Stopovers (YYC, YLW, YVR)
WS0019, WS0399, WS3331, F81846
27h 20min
Return
10/23/25
1 Stopover (LIS)
TP0238, TP1366
22h 35min
Westjet, Flair Airlines
$822
Best option
London
San Francisco
Outbound
10/19/25
direct
OS7857
11h 05min
Return
10/23/25
direct
LH8573
10h 20min
Austrian Airlines ?
$1,281
London
San Francisco
Outbound
10/19/25
1 Stopover (FRA)
LH0921, LH0454
14h 10min
Return
10/23/25
1 Stopover (MUC)
LH0459, LH2480
14h 35min
Lufthansa
$851
London
San Francisco
Outbound
10/19/25
1 Stopover (YYC)
WS0019, WS1508
29h 44min
Return
10/23/25
1 Stopover (LIS)
TP0238, TP1350
17h 25min
Westjet ?
$852
London
San Francisco
Outbound
10/19/25
1 Stopover (YYC)
WS0019, WS1520
15h 14min
Return
10/23/25
1 Stopover (LIS)
TP0238, TP1366
22h 35min
Westjet
$877
London
San Francisco
Outbound
10/19/25
1 Stopover (LIS)
TP1369, TP0237
26h 40min
Return
10/23/25
1 Stopover (LIS)
TP0238, TP1350
17h 25min
TAP Air Portugal ?
$948
London
San Francisco
Outbound
10/19/25
1 Stopover (LIS)
TP1359, TP0237
32h 45min
Return
10/23/25
1 Stopover (LIS)
TP0238, TP1350
17h 25min
TAP Air Portugal
$961
London
San Francisco
Outbound
10/19/25
1 Stopover (YYC)
WS0019, WS1520
15h 14min
Return
10/23/25
1 Stopover (LIS)
TP0238, TP1350
17h 25min
Westjet ?
$976
London
San Francisco
Outbound
10/19/25
1 Stopover (LIS)
TP1369, TP0237
26h 40min
Return
10/23/25
1 Stopover (LIS)
TP0238, TP1366
22h 35min
TAP Air Portugal ?
$2,056
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 to San Francisco

Favorite airline: SAS
18 % of flights from London to San Francisco are booked with SAS.
SAS
18 %
United Airlines
16 %
Lufthansa
12 %
Direct flights are more expensive
On this route, direct flights are $11.00 more expensive than flights with a stopover.
non stop flight
1 stop
2 stops
11h 05min
16h 35min
23h 30min
$478
$467
$1,040
Favourite connection: via Copenhagen
23 % of booked tickets on this route are for flights with a transfer in Copenhagen.
Route
bookings
1 stopover Copenhagen
17h 10min, from $475
23 %
Direct flights
11h 05min, from $478
17 %
1 stopover Frankfurt-Main
16h 35min, from $467
16 %

Important flight information

Flight information: London - San Francisco

Roundtrip from $821.10
Flight duration min. 11:10 / max. 11:25
Return flight duration min. 10:15/ max. 10:35
Distance 8637 km
Flights per week 47
Departure airport Airport London, all Airports (LON)
Departure country Flights from United Kingdom
Arrival airport Airport San Francisco International Airport, CA (SFO)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to San Francisco
Flight destinations with a similar price