AirHint found the following cheapest one-way flights from San Francisco (SFO) to London (LHR) in September 2026 (see full year).
One-Way flights
| 22 Sep | Iberia | ||
| 26 Sep | Alaska Airlines | ||
| 23 Sep | jetBlue | ||
| 14 Sep | Lufthansa | ||
| 09 Sep | Austrian Airlines | ||
| 01 Sep | Lufthansa | ||
| 08 Sep | Lufthansa | ||
| 09 Sep | Austrian Airlines | direct | |
| 10 Sep | jetBlue | ||
| 05 Sep | FrenchBee |
Also check the deals for return flights from San Francisco to London in September.
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