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

Return flights

13 Dec - 09 Jan	Spirit Airlines
03 Dec - 09 Dec	Frontier Airlines
02 Dec - 05 Dec	Spirit Airlines
28 Dec - 11 Jan	British Airways
03 Dec - 09 Dec	Turkish Airlines	direct
29 Dec - 09 Jan	Etihad Airways
28 Dec - 05 Jan	Lufthansa
29 Dec - 09 Jan	Turkish Airlines	direct
13 Dec - 29 Dec	Turkish Airlines	direct
06 Dec - 05 Jan	British Airways
05 Dec - 05 Jan	British Airways
13 Dec - 03 Jan	Spirit Airlines
20 Dec - 10 Jan	Frontier Airlines
16 Dec - 03 Jan	Frontier Airlines
02 Dec - 05 Dec	Turkish Airlines	direct

Also check the deals for one-way flights from Atlanta 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 Atlanta to Istanbul in December from $615

Return flights