Cheapest return flights from Seoul (ICN) to Ulaanbaatar (UBN), December

20 dates in December, from $ 309. Book in one tap, or check whether to buy now or wait.

One-wayReturn
Dates, airline, and price
Dates Airline Price
1 Dec 10 Dec Jeju Air
Direct Flight
6 Dec 8 Dec Jeju Air
Direct Flight
8 Dec 22 Dec Jeju Air
Direct Flight
15 Dec 31 Dec Jeju Air
Direct Flight
10 Dec 15 Dec Jeju Air
Direct Flight
6 Dec 15 Dec Jeju Air
Direct Flight
6 Dec 10 Dec Jeju Air
Direct Flight
1 Dec 6 Dec Jeju Air
Direct Flight
29 Dec 12 Jan 2027 Jeju Air
Direct Flight
10 Dec 22 Dec Jeju Air
Direct Flight
17 Dec 22 Dec Jeju Air
Direct Flight
29 Dec 7 Jan 2027 Jeju Air
Direct Flight
29 Dec 5 Jan 2027 Jeju Air
Direct Flight
29 Dec 3 Jan 2027 Jeju Air
Direct Flight
29 Dec 13 Jan 2027 Jeju Air
Direct Flight
24 Dec 3 Jan 2027 MIAT Mongolian Airlines
Direct Flight
16 Dec 7 Jan 2027 Aero Mongolia
Direct Flight
21 Dec 7 Jan 2027 Korean Air
Direct Flight
27 Dec 10 Jan 2027 Jeju Air
Direct Flight
27 Dec 5 Jan 2027 Jeju Air
Direct Flight
Powered by

Cheapest deals for the full year

Deals for one-way flights from Seoul to Ulaanbaatar in December.

Book a cheap hotel in Ulaanbaatar

Cheap car rent in Ulaanbaatar Chinggis Khaan Intl

Updated Oct 16, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

Feel free to contact us with any feedback or request another flight research.