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

Return flights

08 Aug - 12 Sep	Finnair
13 Aug - 27 Aug	Lufthansa
14 Aug - 28 Aug	Lufthansa
15 Aug - 28 Aug	Lufthansa
12 Aug - 24 Aug	Lufthansa
10 Aug - 17 Aug	Lufthansa
06 Aug - 20 Aug	Lufthansa
14 Aug - 27 Aug	Lufthansa
15 Aug - 27 Aug	Lufthansa
15 Aug - 29 Aug	Lufthansa
17 Aug - 30 Aug	Lufthansa
18 Aug - 01 Sep	Lufthansa
21 Aug - 06 Sep	Lufthansa
16 Aug - 02 Sep	Finnair
19 Aug - 02 Sep	Avianca

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 699€

Return flights