Flights from Kathmandu(KTM) to Chinggis Khaan International Airport(ULN)

At the moment, you can catch a nonstop flight from Kathmandu to Ulaanbaatar with the following airlines, including: Cathay Pacific Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Kathmandu to Ulaanbaatar is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

The cheapest months to fly from Kathmandu to Ulaanbaatar is September, when demand for travel is lower.

After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Kathmandu to Ulaanbaatar on December 21, 2025 with Thai AirAsia, with prices starting at TWD 10,449.

You can land at any one of the following hubs in Ulaanbaatar, with Tribhuvan International Airport to Chinggis Khaan International Airport (KTM-UBN) is by far the most common option on this route: Buyant-Ukhaa International Airport (ULN) Chinggis Khaan International Airport (UBN).

The time difference between Ulaanbaatar and Kathmandu is 2h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.