Cheapest one-way flights from San Francisco to London in May from $314

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

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

One-Way flights

13 May Frontier Airlines
03 May Hawaiian Airlines
04 May Alaska Airlines
10 May Frontier Airlines
18 May Frontier Airlines
05 May Frontier Airlines
02 May Frontier Airlines
11 May Sun Country Airlines
14 May Alaska Airlines
28 May Frontier Airlines

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

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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