AirHint found the following cheapest return flights from Chicago (MDW) to Seoul (ICN) in August 2026 (see full year).
Return flights
| 07 Aug - 17 Aug | Delta | ||
| 09 Aug - 06 Sep | Delta | ||
| 08 Aug - 15 Aug | Delta | ||
| 25 Aug - 31 Aug | Delta | ||
| 29 Aug - 31 Aug | Korean Air |
Also check the deals for one-way flights from Chicago to Seoul in August.
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