Cheapest return flights from Seoul to Ulaanbaatar in December from 440€

AirHint found the following cheapest return flights from Seoul (GMP) to Ulaanbaatar (UBN) in December 2025 (see full year).

Return flights

14 Dec - 16 Dec Air China
05 Dec - 10 Dec Air China
14 Dec - 21 Dec Air China
14 Dec - 18 Dec Air China
28 Dec - 03 Jan Air China
08 Dec - 12 Dec Air China
15 Dec - 18 Dec Air China
24 Dec - 31 Dec Air China
19 Dec - 21 Dec Air China
22 Dec - 26 Dec Air China
24 Dec - 27 Dec Air China

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

Skyscanner

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.

Book a cheap hotel in Ulaanbaatar

Cheap car rent in Ulaanbaatar

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