AirHint found the following cheapest one-way flights from Chicago (ORD) to Seoul (ICN) in March 2026 (see full year).
One-Way flights
| 29 Mar | Etihad Airways | ||
| 28 Mar | Etihad Airways | ||
| 27 Mar | Frontier Airlines | ||
| 25 Mar | Volaris | ||
| 25 Mar | Delta | direct | |
| 29 Mar | Korean Air | direct | |
| 28 Mar | Korean Air | direct | |
| 27 Mar | Korean Air | direct |
Also check the deals for return flights from Chicago to Seoul in March.
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