AirHint found the following cheapest return flights from London (LON) to San Jose (SJO) in March 2026 (see full year).

Return flights

15 Mar - 14 Apr	SWISS
22 Mar - 14 Apr	SWISS
31 Mar - 17 Apr	Lufthansa
10 Mar - 17 Mar	Air Canada
13 Mar - 25 Mar	Air Canada
03 Mar - 17 Mar	SWISS
03 Mar - 10 Mar	SWISS
03 Mar - 12 Mar	SWISS
03 Mar - 16 Mar	SWISS
01 Mar - 11 Mar	Lufthansa
01 Mar - 12 Mar	Lufthansa
02 Mar - 09 Mar	Lufthansa
11 Mar - 25 Mar	Lufthansa
26 Mar - 16 Apr	Lufthansa
31 Mar - 21 Apr	Austrian Airlines
27 Mar - 21 Apr	Lufthansa
26 Mar - 22 Apr	Lufthansa
26 Mar - 23 Apr	Lufthansa
21 Mar - 06 Apr	Air Canada
16 Mar - 15 Apr	SWISS

Also check the deals for one-way flights from London to San Jose 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 return flights from London to San Jose in March from 493€

Return flights