Cheapest return flights from Seoul to Ulaanbaatar in October from $264

Best time to book flights for Seoul (ICN) to Ulaanbaatar (UBN) flights at AirHint

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

Return flights

19 Oct - 23 Oct Jeju Air direct
14 Oct - 23 Oct Jeju Air direct
16 Oct - 19 Oct Jeju Air direct
21 Oct - 23 Oct Jeju Air direct
10 Oct - 16 Oct Korean Air direct
20 Oct - 30 Oct Korean Air direct
17 Oct - 03 Nov Korean Air direct
10 Oct - 15 Oct Korean Air direct
20 Oct - 24 Oct Korean Air direct
23 Oct - 25 Oct Korean Air direct
20 Oct - 29 Oct Korean Air direct
30 Oct - 02 Nov Korean Air direct

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

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