AirHint found the following cheapest return flights from San Francisco (SFO) to London (LGW) in August 2026 (see full year).
Return flights
| 26 Aug - 31 Aug | SWISS | ||
| 05 Aug - 21 Aug | Alaska Airlines | ||
| 28 Aug - 31 Aug | Flair Airlines | ||
| 01 Aug - 08 Aug | FrenchBee |
Also check the deals for one-way flights from San Francisco to London in August.
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