Cheapest return flights from San Francisco to London in September from 367€

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

Return flights

10 Sep - 24 Sep TAP
09 Sep - 23 Sep TAP
09 Sep - 30 Sep TAP
17 Sep - 30 Sep TAP
25 Sep - 29 Sep TAP
24 Sep - 29 Sep TAP
16 Sep - 22 Sep TAP
09 Sep - 16 Sep TAP
16 Sep - 23 Sep TAP
30 Sep - 21 Oct TAP
17 Sep - 15 Oct TAP
24 Sep - 16 Oct TAP
22 Sep - 28 Oct TAP
03 Sep - 10 Sep Air Canada
24 Sep - 08 Oct Delta
03 Sep - 01 Oct Delta
29 Sep - 09 Oct Delta
22 Sep - 28 Oct Delta direct
30 Sep - 21 Oct British Airways direct
24 Sep - 16 Oct British Airways direct

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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