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

Return flights

04 Dec - 13 Dec	AJet
01 Dec - 13 Dec	AJet
01 Dec - 11 Dec	Pegasus Airlines
02 Dec - 16 Dec	AJet
04 Dec - 23 Dec	Pegasus Airlines
01 Dec - 07 Dec	AJet
08 Dec - 21 Dec	Wizz Air
08 Dec - 22 Dec	Wizz Air
01 Dec - 22 Dec	Pegasus Airlines
02 Dec - 17 Dec	Pegasus Airlines
14 Dec - 17 Jan	AJet
14 Dec - 15 Jan	AJet
11 Dec - 11 Jan	easyJet
30 Dec - 12 Jan	Pegasus Airlines
13 Dec - 17 Jan	AJet
29 Dec - 12 Jan	Pegasus Airlines
30 Dec - 13 Jan	Pegasus Airlines
29 Dec - 23 Jan	Pegasus Airlines
30 Dec - 24 Jan	Wizz Air
16 Dec - 21 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 499€

Return flights