Cheapest return flights from San Francisco to London in September from 358€

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

Return flights

09 Sep - 16 Sep TAP
16 Sep - 23 Sep TAP
08 Sep - 15 Sep SWISS
01 Sep - 09 Sep SWISS
07 Sep - 11 Sep Alaska Airlines
11 Sep - 22 Sep Hawaiian Airlines
11 Sep - 18 Sep SWISS
12 Sep - 19 Sep Hawaiian Airlines
12 Sep - 01 Oct Alaska Airlines
10 Sep - 17 Sep Hawaiian Airlines
09 Sep - 29 Sep Hawaiian Airlines
30 Sep - 07 Oct Iberia For Level
25 Sep - 07 Oct SWISS
03 Sep - 01 Oct British Airways
26 Sep - 12 Oct Frontier Airlines
24 Sep - 24 Oct Hawaiian Airlines
29 Sep - 07 Oct Hawaiian Airlines
25 Sep - 12 Oct Alaska Airlines
26 Sep - 14 Oct Sun Country Airlines
24 Sep - 25 Oct Alaska Airlines

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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