Cheapest one-way flights from San Francisco to London in September from $336

AirHint found the following cheapest one-way flights from San Francisco (SFO) to London (LHR) in September 2026 (see full year).

One-Way flights

24 Sep LEVEL
22 Sep Lufthansa
30 Sep Aer Lingus
16 Sep Aer Lingus
29 Sep LEVEL
19 Sep Lufthansa
30 Sep Iberia direct
20 Sep Iberia direct
13 Sep Austrian Airlines direct
14 Sep Austrian Airlines direct

Also check the deals for return flights from San Francisco to London in September.

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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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