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

Return flights

08 Dec - 25 Dec	Air Canada
02 Dec - 10 Dec	Air Canada
08 Dec - 15 Dec	Air Canada
02 Dec - 09 Dec	United
15 Dec - 22 Dec	Air Canada
03 Dec - 10 Dec	United
05 Dec - 22 Dec	United
16 Dec - 24 Dec	Air Canada
03 Dec - 11 Dec	United
01 Dec - 09 Dec	United
31 Dec - 08 Jan	United
31 Dec - 07 Jan	United
25 Dec - 08 Jan	United
29 Dec - 29 Jan	United
29 Dec - 17 Jan	United
29 Dec - 15 Jan	United
29 Dec - 10 Jan	United
24 Dec - 07 Jan	United
29 Dec - 11 Jan	United
22 Dec - 12 Jan	United

Also check the deals for one-way flights from Brussels to San Jose in December.

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 December from 485€

Return flights