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

Return flights

24 Aug - 08 Sep	Iberia
29 Aug - 05 Sep	Air Europa
23 Aug - 30 Aug	Air Europa
24 Aug - 29 Aug	Air Europa
15 Aug - 21 Aug	TAP
15 Aug - 30 Aug	TAP
19 Aug - 28 Aug	Ryanair
11 Aug - 25 Aug	Ryanair
01 Aug - 16 Aug	easyJet
02 Aug - 16 Aug	easyJet
03 Aug - 14 Aug	Ryanair
03 Aug - 10 Aug	Ryanair
11 Aug - 01 Sep	United

Also check the deals for one-way flights from Lisbon 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 Lisbon to San Jose in August from 747€

Return flights