Distance From Heihe Aihui Airport to Ulaanbaatar Chinggis Khaan International Airport, HEK - UBN Distance

The distance from Heihe Aihui Airport (HEK) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 944 miles or 1519 kilometers or 820 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Heihe ( China ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Heihe and Ulaanbaatar (Sergelen) takes around 2 hours 10 minutes.

Estimated flight time from Heihe Aihui Airport, Heihe, China to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 2 hours 10 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • HEK - UBN

Kilometers		1519 km
Statute Miles		944 miles
Nautical Miles		820 nm
Avg. Time of Flight		2 hours 10 minutes

Heihe Aihui Airport to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - HEK to UBN Flight Path

Location of Heihe Aihui Airport & Ulaanbaatar Chinggis Khaan International Airport is given below.
Click the map to view Heihe to Ulaanbaatar (Sergelen) nonstop flight path and travel direction.

Click to see flight route on Google Map between Heihe, China and Ulaanbaatar (Sergelen), Mongolia. .

Nonstop flight route between Heihe, China and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • HEK - UBN

Time difference between Heihe (China) and Ulaanbaatar (Sergelen) (Mongolia) is 0 Hours.

Location	Local Time
Heihe (China)	2026-09-15, 07:55:44 CST
Ulaanbaatar (Sergelen) (Mongolia)	2026-09-15, 07:55:44 +08

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Heihe Aihui Airport (HEK / ZYHE) Heihe, China

Destination

Ulaanbaatar Chinggis Khaan International Airport (UBN / ZMCK) Ulaanbaatar (Sergelen), Mongolia