Cheapest return flights from San Francisco to London in May from $584

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

Return flights

10 May - 23 May Scandinavian Airlines
01 May - 08 May Finnair direct
11 May - 18 May British Airways direct
11 May - 31 May Scandinavian Airlines
10 May - 23 May British Airways direct
26 May - 15 Jun Scandinavian Airlines
23 May - 06 Jun Scandinavian Airlines
28 May - 12 Jun TAP
22 May - 05 Jun TAP
22 May - 06 Jun TAP
26 May - 15 Jun British Airways direct
28 May - 12 Jun British Airways direct
22 May - 05 Jun British Airways direct
29 May - 30 Jun TAP
23 May - 06 Jun British Airways direct
11 May - 31 May British Airways direct
03 May - 09 May British Airways

Also check the deals for one-way 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.

Book a cheap hotel in London

Cheap car rent in London

Feel free to contact us with any feedback or request another flight research.