Cheapest return flights from London to San Francisco in April from $527

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

Return flights

15 Apr - 20 Apr SWISS
16 Apr - 27 Apr SWISS
28 Apr - 04 May SWISS
22 Apr - 06 May SWISS
08 Apr - 29 Apr SWISS
23 Apr - 02 May SWISS
10 Apr - 19 Apr British Airways
15 Apr - 22 Apr SWISS
05 Apr - 12 Apr Virgin Atlantic
05 Apr - 16 Apr Virgin Atlantic
05 Apr - 13 Apr Virgin Atlantic
20 Apr - 27 Apr SWISS
16 Apr - 23 Apr SWISS
22 Apr - 07 May SWISS
25 Apr - 03 May SWISS
26 Apr - 03 May SWISS
24 Apr - 03 May SWISS
15 Apr - 02 May SWISS
27 Apr - 03 May SWISS
28 Apr - 09 May SWISS

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

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