September is by far the best month, wherein you can get cheapest flights for London to San Francisco. Meanwhile, is perceived as the expensive month due to the varying factors. That’s why it’s highly advised to make advanced online flight booking to save huge amounts of money.
Disclaimer - All the mentioned fares were found within last 48 hrs. The displayed fares are based on historical data and are subject to change. The fares cannot be guaranteed at the time of booking.
LHR
19:50
London London Heathrow Airport
Tue , 02 Sep 2025
SFO
14:35
San Francisco San Francisco International Airport
Wed, 03 Sep 2025
LHR
09:50
London London Heathrow Airport
Tue , 02 Sep 2025
SFO
15:55
San Francisco San Francisco International Airport
Tue, 02 Sep 2025
LHR
09:50
London London Heathrow Airport
Wed , 03 Sep 2025
SFO
15:55
San Francisco San Francisco International Airport
Wed, 03 Sep 2025
LHR
14:10
London London Heathrow Airport
Tue , 02 Sep 2025
SFO
11:54
San Francisco San Francisco International Airport
Wed, 03 Sep 2025
LHR
20:40
London London Heathrow Airport
Tue , 02 Sep 2025
SFO
15:30
San Francisco San Francisco International Airport
Wed, 03 Sep 2025
LHR
14:10
London London Heathrow Airport
Tue , 02 Sep 2025
SFO
21:24
San Francisco San Francisco International Airport
Tue, 02 Sep 2025
LHR
10:20
London London Heathrow Airport
Tue , 02 Sep 2025
SFO
16:30
San Francisco San Francisco International Airport
Tue, 02 Sep 2025
LHR
21:35
London London Heathrow Airport
Tue , 02 Sep 2025
SFO
20:00
San Francisco San Francisco International Airport
Wed, 03 Sep 2025
LHR
21:10
London London Heathrow Airport
Wed , 03 Sep 2025
SFO
20:30
San Francisco San Francisco International Airport
Thu, 04 Sep 2025
LHR
21:10
London London Heathrow Airport
Tue , 02 Sep 2025
SFO
20:30
San Francisco San Francisco International Airport
Wed, 03 Sep 2025
LHR
22:05
London London Heathrow Airport
Tue , 02 Sep 2025
SFO
20:15
San Francisco San Francisco International Airport
Wed, 03 Sep 2025