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

Return flights

15 Dec - 13 Jan	Wizz Air Malta
29 Dec - 12 Jan	Wizz Air Malta
25 Dec - 15 Jan	Wizz Air Malta
13 Dec - 17 Dec	Ryanair
30 Dec - 12 Jan	Wizz Air
16 Dec - 13 Jan	Wizz Air
19 Dec - 10 Jan	Ryanair
20 Dec - 12 Jan	Wizz Air
16 Dec - 17 Dec	Wizz Air Malta
15 Dec - 16 Dec	Wizz Air Malta
15 Dec - 17 Dec	Wizz Air Malta
27 Dec - 30 Dec	Wizz Air
29 Dec - 07 Jan	Wizz Air Malta
18 Dec - 05 Jan	Wizz Air Malta
28 Dec - 08 Jan	Wizz Air
17 Dec - 17 Dec	Wizz Air Malta
25 Dec - 29 Dec	Wizz Air
14 Dec - 17 Dec	Wizz Air
29 Dec - 31 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 $247

Return flights