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

Return flights

05 Mar - 16 Mar	Icelandair
09 Mar - 16 Mar	Icelandair
02 Mar - 10 Mar	Icelandair
02 Mar - 09 Mar	Icelandair
06 Mar - 24 Mar	Norse Atlantic Airways (UK)
02 Mar - 16 Mar	Norse Atlantic Airways (UK)
09 Mar - 23 Mar	Icelandair
14 Mar - 24 Mar	Ryanair
11 Mar - 24 Mar	Ryanair
17 Mar - 24 Mar	Ryanair
24 Mar - 04 Apr	Ryanair
09 Mar - 01 Apr	Vueling Airlines
19 Mar - 01 Apr	Ryanair
10 Mar - 02 Apr	easyJet
16 Mar - 15 Apr	Ryanair
02 Mar - 30 Apr	Norse Atlantic Airways (UK)
19 Mar - 14 Apr	Ryanair
21 Mar - 04 Apr	Ryanair
24 Mar - 07 Apr	SWISS
20 Mar - 01 Apr	Ryanair

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 513€

Return flights