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

Return flights

02 Dec - 09 Dec	WestJet
01 Dec - 08 Dec	WestJet
03 Dec - 08 Dec	Spirit Airlines
10 Dec - 08 Jan	Air Canada
06 Dec - 08 Jan	Air Canada
08 Dec - 29 Dec	Air Canada
29 Dec - 28 Jan	Air Canada
11 Dec - 26 Dec	Air Canada
31 Dec - 28 Jan	Turkish Airlines
01 Dec - 03 Jan	WestJet
23 Dec - 11 Jan	Sun Country Airlines
01 Dec - 01 Jan	WestJet
22 Dec - 11 Jan	Air Canada
26 Dec - 01 Jan	Air Canada
23 Dec - 09 Jan	Alaska Airlines
16 Dec - 30 Dec	Finnair
18 Dec - 31 Dec	Lufthansa
01 Dec - 08 Dec	Korean Air	direct
08 Dec - 29 Dec	Korean Air	direct
02 Dec - 09 Dec	Delta	direct

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 $911

Return flights