AirHint found the following cheapest return flights from London (LCY) to San Jose (SJO) in June 2025 (see full year).

Return flights

24 Jun - 01 Jul	SWISS
24 Jun - 08 Jul	SWISS
24 Jun - 13 Jul	SWISS
26 Jun - 29 Jun	SWISS
19 Jun - 25 Jun	Lufthansa
19 Jun - 02 Jul	Lufthansa
17 Jun - 24 Jun	SWISS
17 Jun - 01 Jul	SWISS
17 Jun - 29 Jun	SWISS
19 Jun - 03 Jul	Lufthansa
16 Jun - 30 Jun	KLM
19 Jun - 26 Jun	Lufthansa
19 Jun - 05 Jul	Lufthansa
23 Jun - 30 Jun	KLM
16 Jun - 19 Jun	KLM
27 Jun - 11 Jul	British Airways
20 Jun - 26 Jun	KLM
18 Jun - 25 Jun	SWISS
28 Jun - 06 Jul	SWISS
20 Jun - 09 Jul	British Airways

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

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 June from $874

Return flights