AirHint found the following cheapest return flights from Atlanta (ATL) to Seoul (ICN) in January 2026 (see full year).

Return flights

27 Jan - 10 Feb	Frontier Airlines
09 Jan - 25 Jan	Frontier Airlines
26 Jan - 03 Feb	Spirit Airlines
12 Jan - 30 Jan	Frontier Airlines
07 Jan - 28 Jan	Frontier Airlines
15 Jan - 01 Feb	Turkish Airlines
05 Jan - 30 Jan	Turkish Airlines
25 Jan - 04 Feb	WestJet
31 Jan - 05 Feb	Turkish Airlines
03 Jan - 10 Jan	Turkish Airlines
27 Jan - 10 Feb	Delta	direct
26 Jan - 03 Feb	Delta	direct
15 Jan - 01 Feb	Delta	direct
12 Jan - 30 Jan	Delta	direct
25 Jan - 04 Feb	Korean Air	direct
07 Jan - 28 Jan	Delta	direct
10 Jan - 24 Jan	Korean Air	direct
09 Jan - 25 Jan	Delta	direct
31 Jan - 05 Feb	Korean Air	direct

Also check the deals for one-way flights from Atlanta to Seoul in January.

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 January from $839

Return flights