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

Return flights

05 Dec - 13 Dec	WestJet
02 Dec - 09 Dec	Spirit Airlines
04 Dec - 11 Dec	Frontier Airlines
30 Dec - 20 Jan	Turkish Airlines
30 Dec - 14 Jan	Turkish Airlines
31 Dec - 15 Jan	Turkish Airlines
31 Dec - 28 Jan	Turkish Airlines
29 Dec - 28 Jan	Turkish Airlines
03 Dec - 10 Dec	Turkish Airlines
30 Dec - 12 Jan	Turkish Airlines
05 Dec - 11 Jan	WestJet
31 Dec - 09 Jan	Turkish Airlines
10 Dec - 30 Dec	WestJet
11 Dec - 12 Jan	WestJet
25 Dec - 12 Jan	Turkish Airlines
15 Dec - 22 Dec	WestJet
12 Dec - 30 Dec	Spirit Airlines
24 Dec - 28 Dec	Air Canada
05 Dec - 24 Dec	Etihad Airways
21 Dec - 27 Dec	Frontier Airlines

Also check the deals for one-way flights from Atlanta to Seoul 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 Seoul in December from $843

Return flights