AirHint found the following cheapest one-way flights from Chicago (ORD) to Seoul (ICN) in December 2026 (see full year).
One-Way flights
| 19 Dec | Cathay Pacific | ||
| 18 Dec | Cathay Pacific | ||
| 19 Dec | Korean Air | direct | |
| 18 Dec | Korean Air | direct |
Also check the deals for return flights from Chicago to Seoul in December.
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