Cheapest one-way flights from San Francisco to London in April from 193€

AirHint found the following cheapest one-way flights from San Francisco (SFO) to London (LHR) in April 2026 (see full year).

One-Way flights

27 Apr Flair Airlines
26 Apr Flair Airlines
24 Apr Flair Airlines
18 Apr Air Canada
30 Apr WestJet
16 Apr WestJet
26 Apr Lufthansa direct
27 Apr Virgin Atlantic direct
28 Apr American Airlines direct
01 Apr Delta direct

Also check the deals for return 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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