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

Return flights

20 Dec - 26 Dec	Ryanair
22 Dec - 26 Dec	Aeroitalia
16 Dec - 19 Dec	Ryanair
19 Dec - 26 Dec	Ryanair
18 Dec - 25 Dec	Ryanair
21 Dec - 26 Dec	Aeroitalia
23 Dec - 26 Dec	Ryanair
22 Dec - 29 Dec	Ryanair
24 Dec - 26 Dec	Ryanair
20 Dec - 27 Dec	Aeroitalia
31 Dec - 05 Jan	Ryanair
30 Dec - 08 Jan	Ryanair
31 Dec - 02 Jan	Ryanair
26 Dec - 01 Jan	Volotea
31 Dec - 03 Jan	Ryanair
31 Dec - 01 Jan	Ryanair
29 Dec - 05 Jan	Ryanair
31 Dec - 06 Jan	Ryanair
31 Dec - 04 Jan	Ryanair
29 Dec - 02 Jan	Ryanair

Also check the deals for one-way flights from Cagliari 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 Cagliari to Istanbul in December from $292

Return flights