Cheapest return flights from San Francisco to London in May from 538€

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

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

Return flights

06 May - 14 May TAP
01 May - 15 May TAP
02 May - 07 May TAP
10 May - 19 May Air Canada
01 May - 06 May TAP
02 May - 06 May TAP
04 May - 18 May Aer Lingus
06 May - 17 May TAP
03 May - 11 May Air Canada
12 May - 20 May Aer Lingus
21 May - 04 Jun Air Canada
21 May - 09 Jun Air Canada
18 May - 04 Jun Air Canada
18 May - 09 Jun Air Canada
21 May - 11 Jun Aer Lingus
20 May - 17 Jun Finnair direct
18 May - 04 Jun Finnair direct
21 May - 11 Jun Finnair direct
12 May - 09 Jun SWISS
20 May - 07 Jun Aer Lingus

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.

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