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

Return flights

19 Aug - 31 Aug	SWISS
28 Aug - 11 Sep	SWISS
22 Aug - 12 Sep	SWISS
19 Aug - 24 Aug	SWISS
31 Aug - 12 Sep	Lufthansa
31 Aug - 06 Sep	Lufthansa
17 Aug - 31 Aug	KLM
21 Aug - 11 Sep	SWISS
21 Aug - 04 Sep	SWISS
24 Aug - 06 Sep	Lufthansa
14 Aug - 31 Aug	Lufthansa
13 Aug - 04 Sep	Lufthansa
30 Aug - 14 Sep	Air France
26 Aug - 05 Sep	SWISS
18 Aug - 30 Aug	SWISS
13 Aug - 30 Aug	Lufthansa
12 Aug - 30 Aug	Lufthansa
15 Aug - 29 Aug	United
15 Aug - 30 Aug	United
01 Aug - 24 Aug	Lufthansa

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

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 August from 659€

Return flights