AirHint found the following cheapest one-way flights from San Francisco (SFO) to London (LHR) in March 2026 (see full year).
One-Way flights
| 22 Mar | KLM | ||
| 08 Mar | KLM | ||
| 29 Mar | LEVEL | ||
| 24 Mar | Lufthansa | ||
| 31 Mar | LEVEL | ||
| 03 Mar | Frontier Airlines | ||
| 09 Mar | Frontier Airlines | ||
| 15 Mar | SWISS | ||
| 04 Mar | Lufthansa | ||
| 01 Mar | Lufthansa |
Also check the deals for return flights from San Francisco to London in March.
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