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

Return flights

04 Dec - 09 Dec	Wizz Air
16 Dec - 21 Dec	Wizz Air
11 Dec - 16 Dec	Wizz Air
09 Dec - 16 Dec	Wizz Air
15 Dec - 19 Dec	Wizz Air
19 Dec - 31 Dec	Wizz Air
06 Dec - 20 Dec	Wizz Air
02 Dec - 05 Dec	Ryanair
06 Dec - 08 Dec	Wizz Air
02 Dec - 07 Dec	Ryanair
26 Dec - 11 Jan	Wizz Air
28 Dec - 16 Jan	Wizz Air
31 Dec - 01 Jan	Wizz Air
28 Dec - 04 Jan	Wizz Air
25 Dec - 02 Jan	Wizz Air
19 Dec - 02 Jan	Ryanair
19 Dec - 07 Jan	Ryanair
27 Dec - 01 Jan	Ryanair
27 Dec - 17 Jan	Ryanair
19 Dec - 05 Jan	Ryanair

Also check the deals for one-way flights from Warsaw 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 Warsaw to Istanbul in December from $150

Return flights