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

Return flights

26 Dec - 26 Jan	Frontier Airlines
24 Dec - 30 Dec	Delta
28 Dec - 11 Jan	Delta
24 Dec - 27 Dec	Delta
29 Dec - 09 Jan	Frontier Airlines
27 Dec - 15 Jan	Air France
27 Dec - 09 Jan	Spirit Airlines
27 Dec - 30 Dec	Delta
24 Dec - 31 Dec	Spirit Airlines
25 Dec - 31 Jan	Qatar Airways
28 Dec - 13 Jan	Turkish Airlines	direct
25 Dec - 05 Jan	Frontier Airlines
25 Dec - 31 Jan	Turkish Airlines	direct
24 Dec - 06 Jan	Frontier Airlines
24 Dec - 30 Dec	Turkish Airlines	direct
24 Dec - 31 Dec	Turkish Airlines	direct
24 Dec - 27 Dec	Turkish Airlines	direct
27 Dec - 30 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 $968

Return flights