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

Return flights

01 Dec - 15 Dec	SWISS
01 Dec - 08 Dec	Lufthansa
02 Dec - 09 Dec	Lufthansa
04 Dec - 14 Dec	KLM
08 Dec - 29 Dec	Lufthansa
02 Dec - 18 Dec	Lufthansa
02 Dec - 31 Jan	SWISS
04 Dec - 24 Dec	SWISS
01 Dec - 20 Dec	SWISS
08 Dec - 22 Dec	Lufthansa
14 Dec - 14 Jan	Ryanair
03 Dec - 31 Dec	SWISS
14 Dec - 31 Jan	Ryanair
01 Dec - 13 Jan	Etihad Airways
03 Dec - 14 Jan	SWISS
04 Dec - 14 Jan	Lufthansa
01 Dec - 23 Jan	SWISS
29 Dec - 26 Jan	Lufthansa
06 Dec - 17 Jan	Lufthansa
30 Dec - 27 Jan	Lufthansa

Also check the deals for one-way flights from Birmingham 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 Birmingham to Bangkok in December from $703

Return flights