AirHint found the following cheapest one-way flights from Chicago (ORD) to Seoul (ICN) in October 2025 (see full year).
One-Way flights
| 03 Oct | WestJet | ||
| 24 Oct | WestJet | ||
| 16 Oct | WestJet | ||
| 25 Oct | WestJet | ||
| 23 Oct | WestJet | ||
| 27 Oct | Turkish Airlines | ||
| 01 Oct | Alaska Airlines | ||
| 31 Oct | Turkish Airlines | ||
| 11 Oct | Frontier Airlines | ||
| 04 Oct | Etihad Airways |
Also check the deals for return flights from Chicago to Seoul in October.
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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