AirHint found the following cheapest one-way flights from San Francisco (SFO) to London (LHR) in May 2026 (see full year).
One-Way flights
| 21 May | LOT | ||
| 24 May | Alaska Airlines | ||
| 27 May | Alaska Airlines | ||
| 30 May | Alaska Airlines | ||
| 26 May | Alaska Airlines | ||
| 31 May | WestJet | ||
| 29 May | Alaska Airlines | ||
| 23 May | jetBlue | ||
| 28 May | Alaska Airlines | ||
| 22 May | jetBlue |
Also check the deals for return 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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