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

Return flights

13 Dec - 15 Dec	Wizz Air
09 Dec - 16 Dec	Ryanair
17 Dec - 21 Dec	Wizz Air
17 Dec - 24 Dec	Wizz Air
01 Dec - 02 Dec	Wizz Air
14 Dec - 23 Dec	Ryanair
02 Dec - 05 Dec	Wizz Air
07 Dec - 10 Dec	Ryanair
31 Dec - 04 Jan	Ryanair
19 Dec - 21 Dec	Wizz Air
07 Dec - 14 Dec	Ryanair
29 Dec - 05 Jan	Wizz Air
31 Dec - 03 Jan	Ryanair
30 Dec - 01 Jan	Ryanair
30 Dec - 02 Jan	Ryanair

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.

Book a cheap hotel in Bucharest

Cheap car rent in Bucharest

Cheapest return flights from Sofia to Bucharest in December from $115

Return flights