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

Return flights

11 Dec - 25 Dec	Delta
11 Dec - 24 Dec	Delta
12 Dec - 25 Dec	Frontier Airlines
13 Dec - 21 Dec	Frontier Airlines
13 Dec - 22 Dec	Delta
13 Dec - 26 Dec	Frontier Airlines
13 Dec - 20 Dec	Frontier Airlines
10 Dec - 25 Dec	Aer Lingus
12 Dec - 27 Dec	Frontier Airlines
11 Dec - 26 Dec	Delta
17 Dec - 28 Jan	Aer Lingus
10 Dec - 07 Jan	Lufthansa

Also check the deals for one-way flights from Cincinnati 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 Cincinnati to Istanbul in December from $1095

Return flights