AirHint found the following cheapest return flights from Las Vegas (LAS) to Seoul (ICN) in December 2025 (see full year).

Return flights

22 Dec - 30 Dec	Air Canada
22 Dec - 26 Dec	Air Canada
20 Dec - 02 Jan	Air Canada
23 Dec - 01 Jan	Alaska Airlines
25 Dec - 02 Jan	Air Canada
22 Dec - 30 Dec	Korean Air	direct
22 Dec - 26 Dec	Korean Air	direct
26 Dec - 05 Jan	Alaska Airlines

Also check the deals for one-way flights from Las Vegas 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 Las Vegas to Seoul in December from 1114€

Return flights