Cheapest one-way flights from Chicago to Seoul in September from 334€

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
09 Sep WestJet
23 Sep Frontier Airlines
24 Sep Spirit Airlines
25 Sep Frontier Airlines
01 Sep Cathay Pacific
20 Sep Cathay Pacific
03 Sep Korean Air direct
25 Sep Delta direct
30 Sep Delta 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.

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