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

Return flights

06 Dec - 09 Dec	Pegasus Airlines
04 Dec - 13 Dec	Pegasus Airlines
03 Dec - 12 Dec	Air France
03 Dec - 14 Dec	Air France
01 Dec - 10 Dec	SWISS
03 Dec - 13 Dec	Lufthansa
07 Dec - 17 Dec	Air France
02 Dec - 05 Dec	Pegasus Airlines
04 Dec - 14 Dec	Air Serbia
15 Dec - 22 Dec	Pegasus Airlines
15 Dec - 09 Jan	Pegasus Airlines
20 Dec - 10 Jan	Pegasus Airlines
30 Dec - 04 Jan	Turkish Airlines
24 Dec - 03 Jan	Aegean Airlines
19 Dec - 03 Jan	Pegasus Airlines
27 Dec - 03 Jan	Air Serbia
06 Dec - 02 Jan	Qatar Airways
31 Dec - 09 Jan	Turkish Airlines
23 Dec - 06 Jan	Air France
26 Dec - 05 Jan	KLM

Also check the deals for one-way flights from Sofia 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 Sofia to Bangkok in December from 536€

Return flights