Cheapest return flights from Busan to Ulaanbaatar in October from $289

Best time to book flights for Busan (PUS) to Ulaanbaatar (UBN) flights at AirHint

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

Return flights

09 Oct - 13 Oct Jin Air direct
12 Oct - 15 Oct Jeju Air
22 Oct - 25 Oct Korean Air
05 Oct - 13 Oct Jin Air direct
02 Oct - 13 Oct Jin Air direct
01 Oct - 05 Oct Jeju Air direct
07 Oct - 12 Oct Korean Air
04 Oct - 12 Oct Jeju Air direct
05 Oct - 12 Oct Jeju Air direct
02 Oct - 12 Oct Jeju Air direct

Also check the deals for one-way flights from Busan 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