Cheapest one-way flights from San Francisco to London in September from $202

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

One-Way flights

16 Sep Iberia For Level
24 Sep TAP
30 Sep Hawaiian Airlines
28 Sep Iberia For Level
27 Sep Frontier Airlines
25 Sep Frontier Airlines
23 Sep TAP
26 Sep Hawaiian Airlines
22 Sep Frontier Airlines
21 Sep Frontier Airlines

Also check the deals for return 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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