Cheapest return flights from San Francisco to London in May from 572€

AirHint found the following cheapest return flights from San Francisco (SFO) to London (LHR) in May 2026 (see full year).

Return flights

01 May - 15 May United
07 May - 10 May Scandinavian Airlines
01 May - 15 May British Airways direct
07 May - 10 May Delta direct
14 May - 21 May Virgin Atlantic direct
01 May - 01 Jun United
15 May - 24 May British Airways direct
16 May - 30 May United direct
27 May - 07 Jun SWISS
29 May - 12 Jun Air Canada
30 May - 13 Jun TAP
01 May - 01 Jun British Airways direct
29 May - 12 Jun British Airways direct
27 May - 07 Jun British Airways direct

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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