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

Return flights

31 Dec - 27 Jan	Juneyao Airlines
31 Dec - 22 Jan	Juneyao Airlines
31 Dec - 06 Jan	Juneyao Airlines
31 Dec - 17 Jan	Juneyao Airlines
31 Dec - 25 Jan	Hainan Airlines
31 Dec - 18 Jan	Hainan Airlines
31 Dec - 28 Jan	Hainan Airlines
31 Dec - 23 Jan	Hainan Airlines
31 Dec - 10 Jan	Juneyao Airlines
31 Dec - 29 Jan	Hainan Airlines
28 Dec - 31 Dec	AJet
27 Dec - 30 Dec	IndiGo
27 Dec - 29 Dec	AJet
26 Dec - 29 Dec	AJet
24 Dec - 31 Dec	Ryanair
24 Dec - 29 Dec	Hainan Airlines
25 Dec - 30 Dec	Hainan Airlines
28 Dec - 29 Dec	Flynas
23 Dec - 26 Dec	Hainan Airlines
26 Dec - 30 Dec	AJet

Also check the deals for one-way flights from Brussels to Bangkok 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 Bangkok in December from $580

Return flights