Cheapest one-way flights from London to San Francisco in April from $354

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

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

One-Way flights

30 Apr Ryanair
29 Apr Norse Atlantic Airways (UK)
28 Apr Ryanair
27 Apr Norse Atlantic Airways (UK)
26 Apr Ryanair
30 Apr Iberia direct
29 Apr Iberia direct
28 Apr Iberia direct
26 Apr British Airways direct
27 Apr Lufthansa direct

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

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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