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

Return flights

28 Aug - 07 Sep	Air Canada
31 Aug - 13 Sep	United
27 Aug - 05 Sep	United
29 Aug - 10 Sep	United
19 Aug - 26 Aug	United
25 Aug - 04 Sep	United
25 Aug - 05 Sep	United
21 Aug - 04 Sep	United
20 Aug - 25 Aug	United
18 Aug - 29 Aug	United
23 Aug - 30 Aug	United
23 Aug - 29 Aug	United
13 Aug - 26 Aug	United
14 Aug - 24 Aug	United
13 Aug - 06 Sep	United
14 Aug - 06 Sep	United
14 Aug - 10 Sep	United
12 Aug - 26 Aug	United
12 Aug - 24 Aug	United
16 Aug - 28 Aug	United

Also check the deals for one-way flights from Brussels 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 Brussels to San Jose in August from 548€

Return flights