Distance From Saint Louis Airport to Ulaanbaatar Chinggis Khaan International Airport, XLS - UBN Distance

The distance from Saint Louis Airport (XLS) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 6818 miles or 10973 kilometers or 5921 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 Saint Louis ( Senegal ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Saint Louis and Ulaanbaatar (Sergelen) takes around 15 hours 40 minutes.

Estimated flight time from Saint Louis Airport, Saint Louis, Senegal to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 15 hours 40 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 • XLS - UBN

Kilometers		10973 km
Statute Miles		6818 miles
Nautical Miles		5921 nm
Avg. Time of Flight		15 hours 40 minutes

Saint Louis Airport to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - XLS to UBN Flight Path

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

Click to see flight route on Google Map between Saint Louis, Senegal and Ulaanbaatar (Sergelen), Mongolia. .

Nonstop flight route between Saint Louis, Senegal and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • XLS - UBN

Time difference between Saint Louis (Senegal) and Ulaanbaatar (Sergelen) (Mongolia) is 8 Hours.
Ulaanbaatar (Sergelen) time is 8 Hours ahead of Saint Louis.

Location	Local Time
Saint Louis (Senegal)	2026-03-17, 21:40:40 GMT
Ulaanbaatar (Sergelen) (Mongolia)	2026-03-18, 05:40:40 +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

Saint Louis Airport (XLS / GOSS) Saint Louis, Senegal

Destination

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