Cheapest one-way flights from Chicago to Seoul in September from $378

AirHint found the following cheapest one-way flights from Chicago (ORD) to Seoul (ICN) in September 2025 (see full year).

One-Way flights

09 Sep WestJet
10 Sep WestJet
25 Sep WestJet
23 Sep Spirit Airlines
03 Sep WestJet
16 Sep Spirit Airlines
21 Sep Spirit Airlines
15 Sep Spirit Airlines
19 Sep Spirit Airlines
14 Sep Spirit Airlines

Also check the deals for return flights from Chicago to Seoul in September.

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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