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

Return flights

12 Dec - 15 Dec	Wizz Air
04 Dec - 07 Dec	Wizz Air
12 Dec - 14 Dec	Wizz Air
11 Dec - 14 Dec	Wizz Air
04 Dec - 08 Dec	Wizz Air
13 Dec - 15 Dec	Wizz Air
23 Dec - 05 Jan	Wizz Air
05 Dec - 08 Dec	Wizz Air
05 Dec - 07 Dec	Wizz Air
20 Dec - 03 Jan	Wizz Air
05 Dec - 08 Dec	TAROM	direct
25 Dec - 29 Dec	Wizz Air
23 Dec - 05 Jan	TAROM	direct
30 Dec - 02 Jan	Wizz Air
31 Dec - 03 Jan	TAROM

Also check the deals for one-way flights from Sofia to Bucharest 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 Bucharest in December from 72€

Return flights