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

Return flights

06 Jun - 20 Jun	KLM
04 Jun - 25 Jun	KLM
12 Jun - 25 Jun	Air France
16 Jun - 23 Jun	KLM
19 Jun - 30 Jun	Air France
15 Jun - 25 Jun	KLM
08 Jun - 23 Jun	Air France
17 Jun - 30 Jun	Air France
13 Jun - 30 Jun	Air France
08 Jun - 25 Jun	Air France
15 Jun - 10 Jul	KLM
20 Jun - 11 Jul	KLM
22 Jun - 01 Jul	KLM
22 Jun - 06 Jul	KLM
24 Jun - 09 Jul	Air France
25 Jun - 02 Jul	Avianca
12 Jun - 03 Jul	Air France
26 Jun - 10 Jul	Air France
25 Jun - 05 Jul	KLM
29 Jun - 15 Jul	Air France

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 $766

Return flights