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

Return flights

01 Oct - 16 Oct	WestJet
01 Oct - 31 Oct	WestJet
15 Oct - 25 Oct	WestJet
21 Oct - 25 Oct	WestJet
21 Oct - 09 Nov	WestJet
25 Oct - 16 Nov	WestJet
02 Oct - 06 Nov	WestJet
16 Oct - 24 Oct	WestJet
02 Oct - 20 Nov	WestJet
17 Oct - 28 Oct	Frontier Airlines
07 Oct - 14 Oct	WestJet
31 Oct - 24 Nov	WestJet
05 Oct - 02 Nov	Frontier Airlines
09 Oct - 16 Oct	Spirit Airlines
07 Oct - 22 Oct	Frontier Airlines
08 Oct - 12 Nov	Spirit Airlines
08 Oct - 09 Nov	Frontier Airlines
22 Oct - 29 Oct	Hawaiian Airlines
02 Oct - 06 Nov	Korean Air	direct
21 Oct - 09 Nov	Korean Air	direct

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

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 October from $749

Return flights