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

Return flights

01 Dec - 08 Dec	Pegasus Airlines
08 Dec - 21 Dec	Lufthansa
31 Dec - 18 Jan	Air France
09 Dec - 15 Jan	KLM
11 Dec - 26 Dec	Air France
11 Dec - 18 Dec	Air France
08 Dec - 31 Dec	Pegasus Airlines
15 Dec - 21 Dec	easyJet
14 Dec - 27 Jan	Air France
15 Dec - 29 Dec	KLM
21 Dec - 30 Dec	Pegasus Airlines
23 Dec - 07 Jan	British Airways
28 Dec - 10 Jan	British Airways
27 Dec - 10 Jan	Turkish Airlines
27 Dec - 07 Jan	IndiGo
20 Dec - 29 Dec	Turkish Airlines
23 Dec - 13 Jan	Air France
26 Dec - 02 Jan	Turkish Airlines
16 Dec - 01 Jan	KLM

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 611€

Return flights