AirHint found the following cheapest return flights from Des Moines (DSM) to Seoul (ICN) in December 2025 (see full year).

Return flights

02 Dec - 09 Dec	Delta
23 Dec - 30 Dec	Alaska Airlines
14 Dec - 24 Jan	Delta
14 Dec - 23 Jan	Delta
22 Dec - 05 Jan	Frontier Airlines
27 Dec - 03 Jan	Frontier Airlines
26 Dec - 02 Jan	Frontier Airlines
28 Dec - 04 Jan	Allegiant Air

Also check the deals for one-way flights from Des Moines to Seoul in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Des Moines to Seoul in December from 791€

Return flights