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

Return flights

03 Dec - 23 Dec	Pegasus Airlines
03 Dec - 13 Dec	Pegasus Airlines
02 Dec - 09 Dec	Pegasus Airlines
04 Dec - 17 Dec	AJet
01 Dec - 07 Dec	easyJet
16 Dec - 23 Dec	easyJet
05 Dec - 21 Dec	KLM
11 Dec - 20 Dec	easyJet
08 Dec - 29 Dec	Pegasus Airlines
15 Dec - 29 Dec	easyJet
31 Dec - 15 Jan	Wizz Air
12 Dec - 10 Jan	Wizz Air
15 Dec - 14 Jan	Wizz Air
24 Dec - 11 Jan	easyJet
22 Dec - 11 Jan	Wizz Air
26 Dec - 08 Jan	Wizz Air
27 Dec - 09 Jan	Wizz Air
28 Dec - 10 Jan	Turkish Airlines
13 Dec - 06 Jan	easyJet
23 Dec - 28 Jan	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 562€

Return flights