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

Return flights

11 Dec - 15 Dec	Wizz Air Malta
03 Dec - 05 Dec	Wizz Air
07 Dec - 10 Dec	Wizz Air
15 Dec - 13 Jan	Wizz Air
23 Dec - 08 Jan	Wizz Air Malta
16 Dec - 18 Dec	Wizz Air
06 Dec - 09 Dec	Wizz Air
22 Dec - 09 Jan	Wizz Air Malta
12 Dec - 13 Dec	Wizz Air Malta
05 Dec - 06 Dec	Wizz Air Malta
07 Dec - 14 Dec	Wizz Air Malta
23 Dec - 10 Jan	Wizz Air Malta
15 Dec - 19 Dec	Wizz Air Malta
26 Dec - 09 Jan	Ryanair
18 Dec - 07 Jan	Wizz Air Malta
29 Dec - 09 Jan	Ryanair
19 Dec - 05 Jan	Wizz Air Malta
19 Dec - 24 Dec	Ryanair
25 Dec - 11 Jan	Wizz Air
29 Dec - 06 Jan	Ryanair

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 137€

Return flights