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

Return flights

28 Oct - 04 Nov	Spirit Airlines
29 Oct - 12 Nov	Spirit Airlines
02 Oct - 15 Oct	WestJet
18 Oct - 01 Nov	Spirit Airlines
01 Oct - 20 Oct	Spirit Airlines
16 Oct - 30 Oct	Spirit Airlines
21 Oct - 12 Nov	jetBlue
21 Oct - 14 Nov	jetBlue
21 Oct - 12 Nov	Delta	direct
29 Oct - 12 Nov	Delta	direct
21 Oct - 14 Nov	Delta	direct
05 Oct - 08 Oct	Air Canada
01 Oct - 20 Oct	Delta	direct
02 Oct - 15 Oct	Delta	direct
18 Oct - 27 Oct	Air Canada
04 Oct - 11 Oct	Etihad Airways
16 Oct - 30 Oct	Delta	direct
06 Oct - 09 Oct	Air Canada
18 Oct - 01 Nov	Delta	direct
28 Oct - 04 Nov	Delta	direct

Also check the deals for one-way flights from Detroit 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 Detroit to Seoul in October from 764€

Return flights