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

Return flights

05 Dec - 18 Dec	easyJet
08 Dec - 23 Dec	Austrian Airlines
08 Dec - 16 Jan	Austrian Airlines
11 Dec - 26 Dec	Luxair
05 Dec - 19 Dec	SWISS
05 Dec - 30 Jan	SWISS
05 Dec - 20 Dec	KLM
06 Dec - 20 Dec	SWISS
06 Dec - 08 Dec	Ryanair
05 Dec - 16 Jan	SWISS
11 Dec - 12 Jan	Luxair
30 Dec - 14 Jan	Luxair
15 Dec - 28 Jan	Ryanair
15 Dec - 28 Dec	Ryanair
10 Dec - 18 Jan	Luxair
12 Dec - 28 Jan	easyJet
15 Dec - 12 Jan	Ryanair
29 Dec - 14 Jan	Ryanair
19 Dec - 28 Dec	China Southern
22 Dec - 28 Dec	Ryanair

Also check the deals for one-way flights from Luxemburg 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 Luxemburg to Bangkok in December from $662

Return flights