Distance From Ontario Municipal Airport to Ulaanbaatar Chinggis Khaan International Airport, ONO - UBN Distance

The distance from Ontario Municipal Airport (ONO) to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 5566 miles or 8958 kilometers or 4834 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 Oregon ( United States ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Oregon and Ulaanbaatar (Sergelen) takes around 12 hours 47 minutes.

Estimated flight time from Ontario Municipal Airport, Oregon, United States to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 12 hours 47 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 • ONO - UBN

Kilometers		8958 km
Statute Miles		5566 miles
Nautical Miles		4834 nm
Avg. Time of Flight		12 hours 47 minutes

Ontario Municipal Airport to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - ONO to UBN Flight Path

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

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

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

Time Difference Between the Airports • ONO - UBN

Time difference between Oregon (United States) and Ulaanbaatar (Sergelen) (Mongolia) is 14 Hours.
Ulaanbaatar (Sergelen) time is 14 Hours ahead of Oregon.

Location	Local Time
Oregon (United States)	2026-06-19, 01:03:40 MDT
Ulaanbaatar (Sergelen) (Mongolia)	2026-06-19, 15:03:40 +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

Ontario Municipal Airport (ONO / KONO) Oregon, United States

Destination

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