Cheapest one-way flights from San Francisco to London in March from $227

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

One-Way flights

06 Mar WestJet
05 Mar Frontier Airlines
04 Mar Air Canada
09 Mar Air Canada
02 Mar Frontier Airlines
03 Mar Frontier Airlines
10 Mar Frontier Airlines
24 Mar Hawaiian Airlines
23 Mar Frontier Airlines
08 Mar Frontier Airlines

Also check the deals for return flights from San Francisco to London in March.

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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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