Cheapest return flights from San Francisco to London in September from 381€

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

Return flights

22 Sep - 06 Oct TAP
23 Sep - 07 Oct TAP
10 Sep - 17 Sep TAP
11 Sep - 17 Sep TAP
10 Sep - 24 Sep TAP
24 Sep - 08 Oct TAP
06 Sep - 11 Sep Frontier Airlines
08 Sep - 22 Sep Hawaiian Airlines
23 Sep - 28 Sep Hawaiian Airlines
19 Sep - 27 Sep Hawaiian Airlines
02 Sep - 05 Sep Frontier Airlines
26 Sep - 02 Oct SWISS
07 Sep - 28 Sep SWISS
05 Sep - 08 Sep Alaska Airlines
19 Sep - 08 Oct Hawaiian Airlines
09 Sep - 09 Oct Aer Lingus
14 Sep - 10 Oct Alaska Airlines
20 Sep - 07 Oct Frontier Airlines
01 Sep - 06 Oct TAP
28 Sep - 04 Oct Iberia For Level

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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