Cheap flights from London to San Francisco – Compare and Save

LON — SFO
25 Jun — 2 Jul1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights from London to San Francisco
Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 May 2026.

Tue 1/910:50
LHR
-
SFO
1 stop16h 10m
Lufthansa
Wed 30/913:55
SFO
-
LHR
1 stop24h 15m
Lufthansa
Deal found 25/5£507
Mon 31/820:25
LHR
-
SFO
1 stop30h 35m
Lufthansa
Mon 21/916:45
SFO
-
LHR
Nonstop10h 25m
Lufthansa
Deal found 24/5£508
Mon 15/620:15
LGW
-
SFO
2 stops24h 25m
Multiple Airlines
Mon 29/614:40
SFO
-
LGW
2 stops20h 45m
Multiple Airlines
Deal found 26/5£508
Wed 4/1109:00
LHR
-
SFO
1 stop15h 30m
United Airlines
Wed 11/1108:35
SFO
-
LHR
1 stop17h 05m
United Airlines
Deal found 23/5£508
Thu 24/908:45
LHR
-
SFO
1 stop15h 30m
United Airlines
Sat 3/1019:45
SFO
-
LHR
Nonstop10h 25m
United Airlines
Deal found 22/5£509
Sat 21/1109:00
LHR
-
SFO
1 stop15h 30m
United Airlines
Sat 28/1105:00
SFO
-
LHR
1 stop20h 40m
United Airlines
Deal found 24/5£510
Tue 9/621:15
LGW
-
SFO
2 stops25h 20m
TAP AIR PORTUGAL
Mon 2/1116:35
SFO
-
LGW
1 stop15h 10m
TAP AIR PORTUGAL
Deal found 25/5£510
Wed 16/913:50
LTN
-
SFO
2 stops32h 50m
Multiple Airlines
Tue 22/916:45
SFO
-
LTN
2 stops21h 25m
Multiple Airlines
Deal found 25/5£511
Sun 11/1019:30
LHR
-
SFO
1 stop27h 10m
Scandinavian Airlines
Tue 20/1016:45
SFO
-
LHR
1 stop15h 15m
Scandinavian Airlines
Deal found 25/5£511
Wed 7/1009:25
LGW
-
SFO
1 stop14h 50m
SWISS
Sun 18/1019:35
SFO
-
LGW
1 stop14h 15m
SWISS
Deal found 25/5£511
Tue 22/908:45
LHR
-
SFO
2 stops17h 56m
Air Canada
Tue 29/911:10
SFO
-
LHR
1 stop14h 50m
Air Canada
Deal found 25/5£511
Mon 15/620:15
LGW
-
SFO
2 stops24h 25m
Multiple Airlines
Mon 29/614:40
SFO
-
LGW
3 stops33h 50m
Multiple Airlines
Deal found 26/5£511

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