Cheapest one-way flights from San Francisco to London in May from $301

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 May 2025 (see full year).

One-Way flights

13 May Iberia
04 May Frontier Airlines
02 May Frontier Airlines
17 May Frontier Airlines
27 May Flair Airlines
24 May Porter Airlines (Canada) Ltd
22 May Porter Airlines (Canada) Ltd
20 May Flair Airlines
25 May Frontier Airlines

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

Skyscanner

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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