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

Return flights

28 Aug - 06 Sep	SWISS
28 Aug - 04 Sep	SWISS
19 Aug - 02 Sep	SWISS
31 Aug - 11 Sep	Lufthansa
29 Aug - 05 Sep	SWISS
15 Aug - 01 Sep	Wizz Air UK
17 Aug - 02 Sep	Lufthansa
04 Aug - 20 Aug	Wizz Air UK
20 Aug - 30 Aug	SWISS
18 Aug - 25 Aug	SWISS
22 Aug - 30 Aug	SWISS
22 Aug - 29 Aug	SWISS
06 Aug - 16 Aug	Lufthansa
06 Aug - 13 Aug	Lufthansa
16 Aug - 25 Aug	Ryanair
16 Aug - 01 Sep	Ryanair
15 Aug - 13 Sep	SWISS
19 Aug - 26 Aug	Ryanair
10 Aug - 21 Aug	Wizz Air UK
13 Aug - 05 Sep	Ryanair

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 667€

Return flights