Cheapest one-way flights from London to San Francisco in September from $316

Best time to book flights for London (LON) to San Francisco (SFO) flights at AirHint

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

One-Way flights

04 Sep Norse Atlantic Airways (UK)
11 Sep Norse Atlantic Airways (UK)
12 Sep Norse Atlantic Airways (UK)
18 Sep Vueling Airlines
16 Sep Vueling Airlines
02 Sep Vueling Airlines
14 Sep easyJet
07 Sep Vueling Airlines
24 Sep Norse Atlantic Airways (UK)
19 Sep easyJet

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