AirHint found the following cheapest one-way flights from San Francisco (SFO) to London (LGW) in September 2026 (see full year).
One-Way flights
| 05 Sep | Frontier Airlines | ||
| 26 Sep | Alaska Airlines | ||
| 10 Sep | Alaska Airlines | ||
| 09 Sep | Alaska Airlines | ||
| 02 Sep | Frontier Airlines | ||
| 08 Sep | Frontier Airlines | ||
| 14 Sep | Alaska Airlines | ||
| 07 Sep | SWISS | ||
| 22 Sep | SWISS |
Also check the deals for return flights from San Francisco to London in September.
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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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