Cheapest return flights from San Francisco to London in May from 686€

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

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

Return flights

02 May - 07 May Alaska Airlines
02 May - 08 May TAP
07 May - 11 May Alaska Airlines
01 May - 11 May Alaska Airlines
02 May - 11 May Alaska Airlines
02 May - 09 May TAP
17 May - 31 May WestJet
17 May - 29 May WestJet
02 May - 10 May Turkish Airlines
22 May - 02 Jun TAP
22 May - 29 May Alaska Airlines
17 May - 07 Jun Iberia
30 May - 14 Jun Alaska Airlines
24 May - 21 Jun Air Transat

Also check the deals for one-way flights from San Francisco to London in May.

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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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