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

One-Way flights

25 Mar	WestJet
20 Mar	WestJet
29 Mar	jetBlue
29 Mar	British Airways	direct
22 Mar	Hawaiian Airlines
22 Mar	British Airways	direct
25 Mar	British Airways	direct
19 Mar	British Airways	direct
20 Mar	British Airways	direct

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

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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Cheapest one-way flights from San Diego to London in March from $299

One-Way flights