Cheapest return flights from San Francisco to London in May from 444€

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

Return flights

02 May - 11 May TAP
12 May - 18 May TAP
13 May - 20 May Air Canada
13 May - 20 May KLM direct
09 May - 26 May Virgin Atlantic direct
12 May - 18 May British Airways direct
04 May - 12 May Austrian Airlines direct
03 May - 09 Jun Air Canada
24 May - 08 Jun WestJet
20 May - 31 May Air Canada
02 May - 11 May British Airways direct
07 May - 31 May SWISS
27 May - 03 Jun Lufthansa direct
11 May - 23 Jun Delta direct
25 May - 15 Jun SWISS
29 May - 05 Jun Flair Airlines
26 May - 15 Jun SWISS
24 May - 08 Jun British Airways direct
25 May - 15 Jun Brussels Airlines direct
26 May - 15 Jun Brussels Airlines 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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