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

Return flights

31 Dec - 12 Jan	British Airways
31 Dec - 17 Jan	British Airways
13 Dec - 13 Jan	Frontier Airlines
14 Dec - 12 Jan	Frontier Airlines
08 Dec - 24 Dec	Lufthansa
10 Dec - 25 Dec	Lufthansa
14 Dec - 07 Jan	Frontier Airlines
27 Dec - 11 Jan	Delta
13 Dec - 28 Dec	Frontier Airlines
13 Dec - 31 Dec	Frontier Airlines
10 Dec - 07 Jan	Aer Lingus
10 Dec - 30 Dec	Aer Lingus
10 Dec - 31 Dec	Aer Lingus
24 Dec - 31 Dec	Frontier Airlines
24 Dec - 04 Jan	Frontier Airlines
28 Dec - 04 Jan	Aer Lingus
20 Dec - 03 Jan	Frontier Airlines

Also check the deals for one-way flights from Cleveland 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 Cleveland to Istanbul in December from $759

Return flights