Cheapest return flights from Busan to Ulaanbaatar in September from $383

AirHint found the following cheapest return flights from Busan (PUS) to Ulaanbaatar (UBN) in September 2026 (see full year).

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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.