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

Return flights

10 Mar - 24 Mar	Air Dolomiti
11 Mar - 30 Mar	KLM
16 Mar - 23 Mar	SWISS
17 Mar - 24 Mar	SWISS
12 Mar - 18 Mar	SWISS
19 Mar - 30 Mar	SWISS
03 Mar - 19 Mar	SWISS
07 Mar - 26 Mar	SWISS
05 Mar - 19 Mar	SWISS
18 Mar - 29 Mar	SWISS
24 Mar - 07 Apr	SWISS
26 Mar - 06 Apr	Lufthansa
20 Mar - 02 Apr	KLM
19 Mar - 04 Apr	KLM
26 Mar - 09 Apr	SWISS
27 Mar - 14 Apr	Air Dolomiti
30 Mar - 12 Apr	SWISS
31 Mar - 10 Apr	SWISS
30 Mar - 06 Apr	Lufthansa
27 Mar - 09 Apr	KLM

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 734€

Return flights