Distance From RAF Leeming Air Base to Ulaanbaatar Chinggis Khaan International Airport

The distance from RAF Leeming Air Base () to Ulaanbaatar Chinggis Khaan International Airport (UBN) is 4254 miles or 6845 kilometers or 3694 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 Leeming ( United Kingdom ) to Ulaanbaatar (Sergelen) ( Mongolia )?

A one-way nonstop (direct) flight between Leeming and Ulaanbaatar (Sergelen) takes around 9 hours 46 minutes.

Estimated flight time from RAF Leeming Air Base, Leeming, United Kingdom to Ulaanbaatar Chinggis Khaan International Airport, Ulaanbaatar (Sergelen), Mongolia is 9 hours 46 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		6845 km
Statute Miles		4254 miles
Nautical Miles		3694 nm
Avg. Time of Flight		9 hours 46 minutes

RAF Leeming Air Base to Ulaanbaatar Chinggis Khaan International Airport Flight Route Map - to UBN Flight Path

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

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

Nonstop flight route between Leeming, United Kingdom and Ulaanbaatar (Sergelen), Mongolia.

Time Difference Between the Airports • - UBN

Time difference between Leeming (United Kingdom) and Ulaanbaatar (Sergelen) (Mongolia) is 7 Hours.
Ulaanbaatar (Sergelen) time is 7 Hours ahead of Leeming.

Location	Local Time
Leeming (United Kingdom)	2026-08-26, 03:22:06 BST
Ulaanbaatar (Sergelen) (Mongolia)	2026-08-26, 10:22:06 +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

RAF Leeming Air Base ( / EGXE) Leeming, United Kingdom

Destination

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