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

Return flights

09 Aug - 16 Aug	Avianca
10 Aug - 17 Aug	Avianca
11 Aug - 18 Aug	Avianca
12 Aug - 19 Aug	Avianca
16 Aug - 24 Aug	Avianca
13 Aug - 20 Aug	Avianca
08 Aug - 15 Aug	Avianca
10 Aug - 17 Aug	Avianca	direct
07 Aug - 14 Aug	Avianca
03 Aug - 19 Aug	Avianca

Also check the deals for one-way flights from Quito 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 Quito to San Jose in August from 248€

Return flights