Distance From Okondja Airport to Ulaanbaatar Chinggis Khaan International Airport, OKN - UBN Distance

The distance from Okondja Airport (OKN) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 6399 miles or 10298 kilometers or 5557 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 Okondja ( Gabon ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Okondja and Ulaanbaatar (Sergelen) takes around 14 hours 42 minutes.

Estimated flight time from Okondja Airport, Okondja, Gabon to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 14 hours 42 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 • OKN - UBN

Kilometers		10298 km
Statute Miles		6399 miles
Nautical Miles		5557 nm
Avg. Time of Flight		14 hours 42 minutes

Okondja Airport to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - OKN to UBN Flight Path

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

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

Nonstop flight route between Okondja, Gabon and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • OKN - UBN

Time difference between Okondja (Gabon) and Ulaanbaatar (Sergelen) (Mongolia) is 7 Hours.
Ulaanbaatar (Sergelen) time is 7 Hours ahead of Okondja.

Location	Local Time
Okondja (Gabon)	2026-09-12, 09:14:24 WAT
Ulaanbaatar (Sergelen) (Mongolia)	2026-09-12, 16:14:24 +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

Okondja Airport (OKN / FOGQ) Okondja, Gabon

Destination

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