Distance From Flat Airport to Ulaanbaatar Chinggis Khaan International Airport, FLT - UBN Distance

The distance from Flat Airport (FLT) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 3536 miles or 5690 kilometers or 3070 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 Flat ( United States ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Flat and Ulaanbaatar (Sergelen) takes around 8 hours 7 minutes.

Estimated flight time from Flat Airport, Flat, United States to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 8 hours 7 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 • FLT - UBN

Kilometers		5690 km
Statute Miles		3536 miles
Nautical Miles		3070 nm
Avg. Time of Flight		8 hours 7 minutes

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

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

Click to see flight route on Google Map between Flat, United States and Ulaanbaatar (Sergelen), Mongolia. .

Nonstop flight route between Flat, United States and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • FLT - UBN

Time difference between Flat (United States) and Ulaanbaatar (Sergelen) (Mongolia) is 17 Hours.
Ulaanbaatar (Sergelen) time is 17 Hours ahead of Flat.

Location	Local Time
Flat (United States)	2025-12-14, 18:50:19 AKST
Ulaanbaatar (Sergelen) (Mongolia)	2025-12-15, 11:50:19 +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

Flat Airport (FLT / FLT) Flat, United States

Destination

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