Distance From Sherbro International Airport to Ulaanbaatar Chinggis Khaan International Airport

The distance from Sherbro International Airport () to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 7139 miles or 11488 kilometers or 6199 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 Bonthe ( Sierra Leone ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Bonthe and Ulaanbaatar (Sergelen) takes around 16 hours 24 minutes.

Estimated flight time from Sherbro International Airport, Bonthe, Sierra Leone to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 16 hours 24 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 • - UBN

Kilometers		11488 km
Statute Miles		7139 miles
Nautical Miles		6199 nm
Avg. Time of Flight		16 hours 24 minutes

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

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

Click to see flight route on Google Map between Bonthe, Sierra Leone and Ulaanbaatar (Sergelen), Mongolia. .

Nonstop flight route between Bonthe, Sierra Leone and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • - UBN

Time difference between Bonthe (Sierra Leone) and Ulaanbaatar (Sergelen) (Mongolia) is 8 Hours.
Ulaanbaatar (Sergelen) time is 8 Hours ahead of Bonthe.

Location	Local Time
Bonthe (Sierra Leone)	2026-04-29, 14:39:47 GMT
Ulaanbaatar (Sergelen) (Mongolia)	2026-04-29, 22:39:47 +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

Sherbro International Airport ( / ) Bonthe, Sierra Leone

Destination

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