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

Return flights

29 Dec - 01 Jan	Air Serbia
29 Dec - 08 Jan	Air Serbia
18 Dec - 05 Jan	Lufthansa
18 Dec - 03 Jan	Lufthansa
30 Dec - 03 Jan	Lufthansa
18 Dec - 04 Jan	Lufthansa
27 Dec - 03 Jan	SWISS
20 Dec - 03 Jan	Bulgaria Air

Also check the deals for one-way flights from Paris to Sofia 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 Paris to Sofia in December from $198

Return flights