Cheapest one-way flights from Hanoi to Ulaanbaatar in September from $285

AirHint found the following cheapest one-way flights from Hanoi (HAN) to Ulaanbaatar (UBN) in September 2025 (see full year).

One-Way flights

09 Sep Jeju Air

Also check the deals for return flights from Hanoi to Ulaanbaatar in September.

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.

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