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

Return flights

28 Jul - 03 Aug	Lufthansa
21 Jul - 31 Jul	Lufthansa
21 Jul - 28 Jul	Lufthansa
28 Jul - 14 Aug	Lufthansa
21 Jul - 04 Aug	Lufthansa
21 Jul - 19 Aug	Lufthansa
28 Jul - 16 Aug	Lufthansa
21 Jul - 11 Aug	Lufthansa
28 Jul - 09 Aug	Lufthansa
17 Jul - 25 Jul	Lufthansa
14 Jul - 27 Jul	Lufthansa
17 Jul - 31 Jul	Lufthansa
14 Jul - 28 Jul	Lufthansa
17 Jul - 22 Jul	Lufthansa
14 Jul - 21 Jul	Lufthansa
17 Jul - 07 Aug	Lufthansa
22 Jul - 05 Aug	Lufthansa
22 Jul - 07 Aug	Lufthansa
08 Jul - 14 Jul	KLM
08 Jul - 12 Jul	KLM

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

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 July from 684€

Return flights