Distance From Bunia Airport to Ulaanbaatar Chinggis Khaan International Airport, BUX - UBN Distance

The distance from Bunia Airport (BUX) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 5517 miles or 8879 kilometers or 4791 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 Bunia ( Democratic Republic of the Congo ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Bunia and Ulaanbaatar (Sergelen) takes around 12 hours 41 minutes.

Estimated flight time from Bunia Airport, Bunia, Democratic Republic of the Congo to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 12 hours 41 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 • BUX - UBN

Kilometers		8879 km
Statute Miles		5517 miles
Nautical Miles		4791 nm
Avg. Time of Flight		12 hours 41 minutes

Bunia Airport to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - BUX to UBN Flight Path

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

Click to see flight route on Google Map between Bunia, Democratic Republic of the Congo and Ulaanbaatar (Sergelen), Mongolia. .

Nonstop flight route between Bunia, Democratic Republic of the Congo and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • BUX - UBN

Time difference between Bunia (Democratic Republic of the Congo) and Ulaanbaatar (Sergelen) (Mongolia) is 6 Hours.
Ulaanbaatar (Sergelen) time is 6 Hours ahead of Bunia.

Location	Local Time
Bunia (Democratic Republic of the Congo)	2026-10-27, 02:24:54 CAT
Ulaanbaatar (Sergelen) (Mongolia)	2026-10-27, 08:24:54 +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

Bunia Airport (BUX / FZKA) Bunia, Democratic Republic of the Congo

Destination

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