AirHint found the following cheapest return flights from Brussels (BRU) to San Jose (SJO) in December 2026 (see full year).

Return flights

04 Dec - 21 Dec	Air Canada
15 Dec - 26 Dec	Air Canada
07 Dec - 21 Dec	SWISS
07 Dec - 23 Dec	SWISS
15 Dec - 03 Jan	Air Canada
07 Dec - 22 Dec	SWISS
10 Dec - 28 Dec	Iberia
16 Dec - 31 Dec	British Airways
10 Dec - 21 Dec	Iberia
16 Dec - 03 Jan	Iberia
07 Dec - 27 Dec	British Airways
03 Dec - 21 Dec	Iberia
18 Dec - 03 Jan	Iberia
18 Dec - 04 Jan	Iberia
14 Dec - 03 Jan	Iberia
15 Dec - 01 Jan	Iberia
19 Dec - 01 Jan	Iberia
18 Dec - 01 Jan	Iberia
18 Dec - 05 Jan	Air Canada
20 Dec - 02 Jan	Iberia

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 546€

Return flights