Cheapest return flights from San Francisco to London in September from 662€

Best time to book flights for San Francisco (SFO) to London (LGW) flights at AirHint

AirHint found the following cheapest return flights from San Francisco (SFO) to London (LGW) in September 2025 (see full year).

Return flights

23 Sep - 30 Sep Vueling Airlines
03 Sep - 17 Sep SWISS
09 Sep - 23 Sep SWISS
16 Sep - 30 Sep TAP
09 Sep - 16 Sep TAP
30 Sep - 10 Oct Iberia
14 Sep - 27 Sep Alaska Airlines
04 Sep - 14 Sep Virgin Atlantic

Also check the deals for one-way flights from San Francisco to London in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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