AirHint found the following cheapest return flights from Houston (IAH) to Seoul (ICN) in October 2025 (see full year).
Return flights
| 23 Oct - 13 Nov | Frontier Airlines | ||
| 24 Oct - 13 Nov | Frontier Airlines | ||
| 26 Oct - 02 Nov | Spirit Airlines | ||
| 22 Oct - 11 Nov | Air Canada |
Also check the deals for one-way flights from Houston to Seoul in October.
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