Cheapest one-way flights from Chicago to Seoul in September from 361€

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

One-Way flights

03 Sep WestJet
05 Sep Frontier Airlines
09 Sep Spirit Airlines
20 Sep Hawaiian Airlines
16 Sep Spirit Airlines
24 Sep Turkish Airlines
27 Sep Turkish Airlines
26 Sep Etihad Airways
25 Sep Etihad Airways
25 Sep Korean Air direct

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Feel free to contact us with any feedback or request another flight research.