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

Return flights

24 Mar - 14 Apr	SWISS
31 Mar - 16 Apr	Lufthansa
07 Mar - 24 Mar	Ryanair
14 Mar - 24 Mar	Ryanair
17 Mar - 31 Mar	Air Canada
10 Mar - 26 Mar	Air Canada
13 Mar - 26 Mar	Air Canada
24 Mar - 07 Apr	Air Canada
13 Mar - 24 Mar	Ryanair
31 Mar - 14 Apr	Air Canada
14 Mar - 25 Mar	Ryanair
12 Mar - 26 Mar	SWISS
03 Mar - 17 Mar	SWISS
03 Mar - 10 Mar	SWISS
31 Mar - 07 Apr	Lufthansa
18 Mar - 02 Apr	Lufthansa
30 Mar - 14 Apr	Lufthansa
30 Mar - 16 Apr	Lufthansa
26 Mar - 07 Apr	Lufthansa
30 Mar - 07 Apr	Lufthansa

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 489€

Return flights