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
05 Dec - 10 Dec	WestJet
06 Dec - 27 Jan	WestJet
29 Dec - 19 Jan	Air Canada
01 Dec - 26 Dec	WestJet
31 Dec - 12 Jan	Air Canada
25 Dec - 19 Jan	Alaska Airlines
25 Dec - 23 Jan	WestJet
30 Dec - 12 Jan	WestJet
12 Dec - 19 Dec	WestJet
03 Dec - 06 Jan	WestJet
18 Dec - 15 Jan	WestJet
04 Dec - 17 Dec	Etihad Airways
16 Dec - 17 Jan	WestJet
16 Dec - 13 Jan	WestJet
24 Dec - 28 Dec	Alaska Airlines
01 Dec - 06 Dec	Air Canada
13 Dec - 31 Dec	WestJet
15 Dec - 31 Dec	WestJet
23 Dec - 28 Dec	Alaska 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 731€

Return flights