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

Return flights

09 Jun - 20 Jun	SWISS
05 Jun - 13 Jun	SWISS
20 Jun - 01 Jul	SWISS
23 Jun - 04 Jul	Air Canada
22 Jun - 13 Jul	Air Canada
06 Jun - 16 Jun	Lufthansa
01 Jun - 13 Jun	Lufthansa
01 Jun - 31 Jul	KLM
01 Jun - 17 Jul	KLM
16 Jun - 30 Jun	KLM
15 Jun - 29 Jun	KLM
16 Jun - 26 Jun	SWISS
08 Jun - 15 Jun	KLM
06 Jun - 06 Jul	KLM
06 Jun - 20 Jun	Iberia
27 Jun - 18 Jul	Air Canada
06 Jun - 14 Jun	KLM
06 Jun - 04 Jul	Iberia

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 $737

Return flights