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

Return flights

03 Dec - 11 Dec	WestJet
31 Dec - 19 Jan	Air Canada
31 Dec - 18 Jan	Air Canada
12 Dec - 08 Jan	Air Canada
14 Dec - 20 Dec	Air Canada
02 Dec - 29 Dec	Air France
13 Dec - 24 Dec	Air Canada
13 Dec - 20 Dec	Air Canada
11 Dec - 09 Jan	Lufthansa
08 Dec - 02 Jan	Air Canada
19 Dec - 01 Jan	Ethiopian Airlines
21 Dec - 02 Jan	Air Canada
03 Dec - 11 Dec	Korean Air	direct
02 Dec - 29 Dec	Delta	direct
20 Dec - 02 Jan	Air Canada
13 Dec - 02 Jan	Air Canada
21 Dec - 31 Dec	Air Canada
31 Dec - 18 Jan	Korean Air	direct
13 Dec - 20 Dec	Korean Air	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 903€

Return flights