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

Return flights

08 Dec - 19 Dec	Air France
01 Dec - 11 Dec	Lufthansa
08 Dec - 24 Dec	Air France
22 Dec - 29 Dec	Pegasus Airlines
16 Dec - 23 Dec	Pegasus Airlines
28 Dec - 11 Jan	SKY express
26 Dec - 10 Jan	Pegasus Airlines
20 Dec - 28 Dec	Wizz Air
20 Dec - 27 Dec	Wizz Air
26 Dec - 09 Jan	Pegasus Airlines
23 Dec - 30 Dec	Pegasus Airlines
12 Dec - 29 Dec	Air France
12 Dec - 28 Dec	Air France
31 Dec - 11 Jan	Wizz Air
29 Dec - 11 Jan	Ryanair
26 Dec - 06 Jan	Pegasus Airlines
29 Dec - 04 Jan	Ryanair
16 Dec - 01 Jan	Lufthansa
22 Dec - 01 Jan	Austrian Airlines
23 Dec - 03 Jan	Pegasus Airlines

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 $680

Return flights