Cheapest one-way flights from San Francisco to London in March from $256

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 March 2025 (see full year).

One-Way flights

26 Mar Frontier Airlines
30 Mar Frontier Airlines
24 Mar Frontier Airlines
16 Mar Frontier Airlines
10 Mar Frontier Airlines
18 Mar Alaska Airlines
20 Mar Frontier Airlines
02 Mar Frontier Airlines
03 Mar FrenchBee
28 Mar Frontier Airlines

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

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.

Book a cheap hotel in London

Cheap car rent in London