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

Return flights

21 Dec - 20 Jan	Lufthansa
11 Dec - 31 Dec	Cathay Pacific
11 Dec - 02 Jan	Cathay Pacific
27 Dec - 03 Jan	Lufthansa
11 Dec - 01 Jan	SWISS
21 Dec - 26 Dec	Emirates
18 Dec - 26 Dec	Emirates
11 Dec - 31 Dec	Thai Airways	direct
21 Dec - 20 Jan	Thai Airways	direct
21 Dec - 26 Dec	Thai Airways	direct
11 Dec - 01 Jan	Thai Airways	direct
11 Dec - 02 Jan	Thai Airways	direct
27 Dec - 03 Jan	Thai Airways	direct
25 Dec - 03 Jan	Scandinavian Airlines
22 Dec - 29 Dec	Scandinavian Airlines

Also check the deals for one-way flights from Bangkok to Brussels 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 Bangkok to Brussels in December from 626€

Return flights