Cheapest return flights from San Francisco to London in April from 391€

AirHint found the following cheapest return flights from San Francisco (SFO) to London (LGW) in April 2026 (see full year).

Return flights

16 Apr - 22 Apr TAP
16 Apr - 29 Apr TAP
16 Apr - 20 Apr TAP
23 Apr - 11 May TAP
17 Apr - 27 Apr TAP
16 Apr - 23 Apr TAP
28 Apr - 04 May TAP
17 Apr - 24 Apr TAP
14 Apr - 20 Apr TAP
07 Apr - 23 Apr TAP
15 Apr - 22 Apr SWISS
08 Apr - 24 Apr SWISS
20 Apr - 06 May Air France
24 Apr - 08 May Alaska Airlines
24 Apr - 10 May Alaska Airlines
22 Apr - 02 May Alaska Airlines
18 Apr - 02 May SWISS

Also check the deals for one-way flights from San Francisco to London in April.

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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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