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

Return flights

07 Dec - 10 Dec	Wizz Air
15 Dec - 13 Jan	Wizz Air
03 Dec - 07 Dec	Wizz Air
06 Dec - 13 Dec	Wizz Air
19 Dec - 11 Jan	Wizz Air Malta
19 Dec - 09 Jan	Wizz Air Malta
04 Dec - 07 Dec	Wizz Air
12 Dec - 17 Dec	Wizz Air Malta
01 Dec - 05 Dec	Wizz Air Malta
19 Dec - 08 Jan	Wizz Air Malta
05 Dec - 08 Dec	Wizz Air Malta
11 Dec - 17 Dec	Wizz Air
25 Dec - 10 Jan	Wizz Air
27 Dec - 10 Jan	Wizz Air
20 Dec - 11 Jan	Ryanair
20 Dec - 08 Jan	Ryanair
25 Dec - 08 Jan	Wizz Air
04 Dec - 08 Dec	Wizz Air
21 Dec - 05 Jan	Wizz Air
11 Dec - 15 Dec	Wizz Air

Also check the deals for one-way flights from Bucharest to Istanbul 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 Istanbul

Cheap car rent in Istanbul

Cheapest return flights from Bucharest to Istanbul in December from $150

Return flights