Distance From Ouesso Airport to Ulaanbaatar Chinggis Khaan International Airport, OUE - UBN Distance

The distance from Ouesso Airport (OUE) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 6172 miles or 9933 kilometers or 5360 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 ( Republic of the Congo ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between and Ulaanbaatar (Sergelen) takes around 14 hours 11 minutes.

Estimated flight time from Ouesso Airport, , Republic of the Congo to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 14 hours 11 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 • OUE - UBN

Kilometers		9933 km
Statute Miles		6172 miles
Nautical Miles		5360 nm
Avg. Time of Flight		14 hours 11 minutes

Ouesso Airport to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - OUE to UBN Flight Path

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

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

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

Time Difference Between the Airports • OUE - UBN

Time difference between (Republic of the Congo) and Ulaanbaatar (Sergelen) (Mongolia) is 7 Hours.
Ulaanbaatar (Sergelen) time is 7 Hours ahead of .

Location	Local Time
(Republic of the Congo)	2026-01-29, 10:04:40 WAT
Ulaanbaatar (Sergelen) (Mongolia)	2026-01-29, 17:04:40 +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

Ouesso Airport (OUE / FCOU) , Republic of the Congo

Destination

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