Cheapest one-way flights from San Francisco to London in April from $217

Best time to book flights for San Francisco (SFO) to London (LGW) flights at AirHint

AirHint found the following cheapest one-way flights from San Francisco (SFO) to London (LGW) in April 2025 (see full year).

One-Way flights

07 Apr Frontier Airlines
06 Apr Frontier Airlines
09 Apr Frontier Airlines
08 Apr Frontier Airlines
12 Apr Frontier Airlines
27 Apr Alaska Airlines
10 Apr Frontier Airlines
05 Apr Frontier Airlines
04 Apr Frontier Airlines
15 Apr Hawaiian Airlines

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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