AirHint found the following cheapest return flights from London (LHR) to San Jose (SJO) in August 2025 (see full year).

Return flights

18 Aug - 15 Sep	jetBlue
30 Aug - 08 Sep	jetBlue
31 Aug - 16 Sep	jetBlue
30 Aug - 07 Sep	jetBlue
22 Aug - 07 Sep	SWISS
31 Aug - 14 Sep	jetBlue
24 Aug - 08 Sep	jetBlue
22 Aug - 10 Sep	jetBlue
28 Aug - 08 Sep	Icelandair
31 Aug - 07 Sep	jetBlue
22 Aug - 31 Aug	SWISS
15 Aug - 17 Aug	Lufthansa
14 Aug - 17 Aug	Lufthansa
13 Aug - 18 Aug	Lufthansa
09 Aug - 19 Aug	Lufthansa
15 Aug - 26 Aug	Lufthansa
15 Aug - 25 Aug	Lufthansa
14 Aug - 26 Aug	Lufthansa
18 Aug - 25 Aug	Lufthansa
19 Aug - 31 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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Cheapest return flights from London to San Jose in August from 612€

Return flights