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

One-Way flights

12 May	Air Canada
10 May	Scandinavian Airlines
15 May	Scandinavian Airlines
23 May	Scandinavian Airlines
12 May	British Airways	direct
10 May	British Airways	direct
11 May	British Airways	direct
08 May	American Airlines	direct
15 May	Virgin Atlantic	direct
23 May	British Airways	direct

Also check the deals for return flights from San Francisco to London in May.

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

Cheapest one-way flights from San Francisco to London in May from 305€

One-Way flights