Cheapest return flights from Chicago to Seoul in October from $669

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

Return flights

21 Oct - 27 Oct Cathay Pacific
23 Oct - 12 Nov Cathay Pacific
02 Oct - 19 Oct Cathay Pacific
21 Oct - 02 Nov Cathay Pacific
02 Oct - 15 Oct Cathay Pacific
27 Oct - 17 Nov Cathay Pacific
24 Oct - 12 Nov Cathay Pacific
23 Oct - 01 Nov Cathay Pacific
03 Oct - 25 Oct Cathay Pacific
24 Oct - 31 Oct Cathay Pacific
24 Oct - 01 Nov Cathay Pacific
03 Oct - 10 Oct Cathay Pacific
15 Oct - 22 Oct Turkish Airlines
16 Oct - 28 Oct WestJet
15 Oct - 29 Oct Turkish Airlines
15 Oct - 14 Nov Turkish Airlines
15 Oct - 13 Nov Turkish Airlines
13 Oct - 21 Oct Frontier Airlines
12 Oct - 23 Nov Hawaiian Airlines
30 Oct - 03 Nov Air Canada

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

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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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