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

Return flights

10 Mar - 17 Mar	Air Dolomiti
10 Mar - 24 Mar	SWISS
17 Mar - 24 Mar	SWISS
03 Mar - 24 Mar	SWISS
10 Mar - 25 Mar	SWISS
09 Mar - 24 Mar	SWISS
16 Mar - 23 Mar	KLM
30 Mar - 06 Apr	KLM
04 Mar - 15 Mar	SWISS
17 Mar - 26 Mar	SWISS
07 Mar - 15 Mar	SWISS
30 Mar - 13 Apr	Lufthansa
03 Mar - 08 Apr	Delta
19 Mar - 06 Apr	SWISS
21 Mar - 07 Apr	SWISS
26 Mar - 13 Apr	Lufthansa
29 Mar - 09 Apr	KLM
25 Mar - 10 Apr	SWISS
31 Mar - 10 Apr	SWISS
31 Mar - 12 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 732€

Return flights