Cheapest one-way flights from Chicago to Seoul in September from $513

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

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

One-Way flights

25 Sep Turkish Airlines
01 Sep Turkish Airlines
03 Sep Turkish Airlines
05 Sep Frontier Airlines
16 Sep Turkish Airlines
04 Sep Turkish Airlines
07 Sep Turkish Airlines
14 Sep Turkish Airlines
12 Sep Frontier Airlines
19 Sep Turkish Airlines

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

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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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