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

Return flights

01 Oct - 11 Oct	WestJet
25 Oct - 01 Nov	WestJet
01 Oct - 30 Oct	Spirit Airlines
23 Oct - 27 Nov	WestJet
24 Oct - 31 Oct	WestJet
23 Oct - 07 Nov	WestJet
24 Oct - 03 Nov	WestJet
02 Oct - 06 Nov	WestJet
04 Oct - 12 Oct	WestJet
17 Oct - 24 Oct	Frontier Airlines
22 Oct - 26 Oct	Frontier Airlines
21 Oct - 30 Oct	Frontier Airlines
19 Oct - 23 Oct	WestJet
17 Oct - 28 Oct	Frontier Airlines
18 Oct - 25 Oct	Spirit Airlines
02 Oct - 20 Nov	Spirit Airlines
21 Oct - 09 Nov	Frontier Airlines
21 Oct - 18 Nov	WestJet
22 Oct - 12 Nov	Frontier Airlines
19 Oct - 25 Nov	WestJet

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 591€

Return flights