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

Return flights

08 Dec - 23 Dec	easyJet
03 Dec - 15 Jan	Pegasus Airlines
11 Dec - 14 Dec	easyJet
12 Dec - 23 Dec	easyJet
01 Dec - 19 Dec	KLM
13 Dec - 17 Jan	easyJet
30 Dec - 17 Jan	IndiGo
30 Dec - 20 Jan	Turkish Airlines
10 Dec - 28 Dec	Pegasus Airlines
31 Dec - 16 Jan	easyJet
29 Dec - 28 Jan	Turkish Airlines
17 Dec - 15 Jan	easyJet
15 Dec - 12 Jan	easyJet
12 Dec - 11 Jan	Turkish Airlines
18 Dec - 30 Dec	easyJet
16 Dec - 10 Jan	easyJet
20 Dec - 31 Dec	easyJet

Also check the deals for one-way flights from Basel 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 Basel to Bangkok in December from $646

Return flights