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

Return flights

04 Dec - 11 Dec	WestJet
01 Dec - 10 Dec	Spirit Airlines
26 Dec - 15 Jan	Frontier Airlines
10 Dec - 30 Dec	WestJet
26 Dec - 16 Jan	Frontier Airlines
10 Dec - 29 Dec	WestJet
11 Dec - 12 Jan	WestJet
25 Dec - 11 Jan	Frontier Airlines
11 Dec - 29 Dec	WestJet
10 Dec - 07 Jan	WestJet
03 Dec - 11 Dec	Turkish Airlines
12 Dec - 18 Dec	WestJet
11 Dec - 30 Dec	WestJet
03 Dec - 06 Jan	WestJet
07 Dec - 14 Dec	Turkish Airlines
07 Dec - 27 Dec	Turkish Airlines
09 Dec - 07 Jan	Frontier Airlines
05 Dec - 05 Jan	WestJet
11 Dec - 07 Jan	WestJet
14 Dec - 10 Jan	WestJet

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 697€

Return flights