AirHint found the following cheapest return flights from Tucson (TUS) to Seoul (ICN) in December 2025 (see full year).
Return flights
| 23 Dec - 13 Jan | Frontier Airlines | ||
| 31 Dec - 07 Jan | Hawaiian Airlines | ||
| 22 Dec - 11 Jan | Alaska Airlines |
Also check the deals for one-way flights from Tucson to Seoul in December.
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