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

Return flights

08 Dec - 24 Dec	KLM
01 Dec - 07 Dec	KLM
09 Dec - 16 Dec	KLM
01 Dec - 06 Dec	Wizz Air
15 Dec - 25 Dec	Wizz Air
15 Dec - 26 Dec	Wizz Air
15 Dec - 23 Dec	Wizz Air
15 Dec - 27 Dec	Wizz Air
15 Dec - 24 Dec	Wizz Air
06 Dec - 21 Dec	Ryanair
18 Dec - 16 Jan	Wizz Air
26 Dec - 06 Jan	Pegasus Airlines
28 Dec - 07 Jan	Pegasus Airlines
19 Dec - 05 Jan	Pegasus Airlines
29 Dec - 03 Jan	Ryanair
25 Dec - 06 Jan	Pegasus Airlines
21 Dec - 05 Jan	Pegasus Airlines
26 Dec - 02 Jan	Wizz Air
29 Dec - 04 Jan	Pegasus Airlines

Also check the deals for one-way flights from Sofia to Singapore 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 Singapore in December from $638

Return flights