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

Return flights

09 May - 22 May	Air Canada
01 May - 16 May	Air Canada
14 May - 21 May	SWISS
07 May - 21 May	SWISS
06 May - 13 May	Aegean Airlines
06 May - 15 May	Air Canada
01 May - 15 May	Air Canada
08 May - 17 May	Ryanair
21 May - 30 May	SWISS
15 May - 30 May	SWISS
31 May - 16 Jun	Air Canada
28 May - 11 Jun	SWISS
29 May - 11 Jun	SWISS
30 May - 11 Jun	Lufthansa
28 May - 12 Jun	SWISS
29 May - 12 Jun	SWISS
30 May - 12 Jun	Lufthansa
27 May - 07 Jun	Air Canada

Also check the deals for one-way flights from London to San Jose in May.

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 May from 633€

Return flights