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

Return flights

02 Dec - 04 Dec	Wizz Air
13 Dec - 16 Dec	Wizz Air
14 Dec - 30 Dec	Wizz Air
31 Dec - 07 Jan	Wizz Air
20 Dec - 09 Jan	Wizz Air
24 Dec - 29 Dec	Wizz Air
05 Dec - 07 Dec	Wizz Air
18 Dec - 11 Jan	Wizz Air
23 Dec - 11 Jan	Wizz Air
23 Dec - 08 Jan	Wizz Air
25 Dec - 15 Jan	Wizz Air
25 Dec - 14 Jan	Wizz Air
22 Dec - 28 Dec	Wizz Air
23 Dec - 06 Jan	Wizz Air
20 Dec - 07 Jan	Wizz Air
30 Dec - 15 Jan	Wizz Air
20 Dec - 24 Dec	Wizz Air
19 Dec - 23 Dec	Wizz Air Malta
19 Dec - 26 Dec	Wizz Air Malta

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.

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Cheapest return flights from Bucharest to Istanbul in December from 126€

Return flights