Distance From Ratanakiri Airport to Ulaanbaatar Chinggis Khaan International Airport, RBE - UBN Distance

The distance from Ratanakiri Airport (RBE) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 2344 miles or 3772 kilometers or 2035 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.

---

How long does it take to travel from Ratanakiri ( Cambodia ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Ratanakiri and Ulaanbaatar (Sergelen) takes around 5 hours 23 minutes.

Estimated flight time from Ratanakiri Airport, Ratanakiri, Cambodia to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 5 hours 23 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 • RBE - UBN

Kilometers		3772 km
Statute Miles		2344 miles
Nautical Miles		2035 nm
Avg. Time of Flight		5 hours 23 minutes

Ratanakiri Airport to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - RBE to UBN Flight Path

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

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

Nonstop flight route between Ratanakiri, Cambodia and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • RBE - UBN

Time difference between Ratanakiri (Cambodia) and Ulaanbaatar (Sergelen) (Mongolia) is 1 Hours.
Ulaanbaatar (Sergelen) time is 1 Hours ahead of Ratanakiri.

Location	Local Time
Ratanakiri (Cambodia)	2026-06-15, 05:10:30 +07
Ulaanbaatar (Sergelen) (Mongolia)	2026-06-15, 06:10:30 +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

Ratanakiri Airport (RBE / VDRK) Ratanakiri, Cambodia

Destination

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