Cheapest return flights from Chicago to Seoul in October from $927

Best time to book flights for Chicago (ORD) to Seoul (ICN) flights at AirHint

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

Return flights

13 Oct - 18 Oct Cathay Pacific
04 Oct - 19 Oct WestJet
05 Oct - 21 Oct Turkish Airlines
03 Oct - 19 Oct WestJet
05 Oct - 19 Oct Turkish Airlines
12 Oct - 25 Nov Alaska Airlines
05 Oct - 19 Oct Korean Air direct
21 Oct - 02 Nov Delta direct
05 Oct - 21 Oct Korean Air direct
04 Oct - 19 Oct Korean Air direct
03 Oct - 19 Oct Delta direct
12 Oct - 25 Nov Korean Air direct
13 Oct - 18 Oct Delta direct

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

Skyscanner

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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