Buyant-Ukhaa International to Ulaanbaatar Chinggis Khaa…ZMUB → ZMCK
Buyant-Ukhaa International Airport (ZMUB / ULN) in Ulaanbaatar, Mongolia to Ulaanbaatar Chinggis Khaan International Airport (ZMCK / UBN) in Ulaanbaatar (Sergelen), Mongolia is 12 nautical miles — 22 kilometres, or 14 statute miles — on the great circle, on an initial bearing of 170°. A business jet at Mach 0.85 and FL410 takes about 0h 30m block time in still air.
Published by Overfly · Airport data: OurAirports, · Last updated
Can the aeroplane make it?
Range here is usable range — book range at long-range cruise, less a reserve allowance. It is the figure that decides whether the leg closes, and it is the question most mappers do not answer.
How far from an airport?
Nowhere on the great circle is more than 1 minutes from a suitable airport at the one-engine diversion speed Overfly uses (430 kt in still air), so a twin-engine aircraft flies it under the 60-minute rule, with no ETOPS approval needed.
A suitable airport here is one OurAirports classes as large with a runway of 8,000 ft or more. An operator’s real alternates also depend on weather, fire cover and approval, and its diversion speed on the type. More in equal-time points and ETOPS, explained.
The two fields
Questions people ask about this route
How far is it from Buyant-Ukhaa International (ZMUB) to Ulaanbaatar Chinggis Khaa… (ZMCK)?
12 nautical miles. That is 22 kilometres or 14 statute miles, measured as a great circle between Buyant-Ukhaa International Airport and Ulaanbaatar Chinggis Khaan International Airport.
How long is the flight from Buyant-Ukhaa International to Ulaanbaatar Chinggis Khaa…?
About 0h 30m block time for a business jet cruising at Mach 0.85 at FL410 in still air, including 30 minutes of taxi, climb and descent. Wind moves that figure in either direction — eastbound across the North Atlantic or the Pacific it can be an hour or more. This page is deliberately still-air so the figure is stable and citable; to apply the month's average upper winds from NOAA, open the route in the mapper and switch on seasonal winds.
What is the initial bearing from Buyant-Ukhaa International (ZMUB) to Ulaanbaatar Chinggis Khaa… (ZMCK)?
170° true at the departure point. A great circle changes heading continuously, so this is the initial bearing, not a constant one.
Which aircraft can fly Buyant-Ukhaa International to Ulaanbaatar Chinggis Khaa… non-stop?
Of the types Overfly carries, G650ER, G550, Global 7500, Falcon 8X, Falcon 7X, Challenger 350, A350-900, B777-300ER, A320neo, A320, B737 MAX 8, B737-800, An-124, Concorde, King Air 200, ATR 72, Dash 8 Q400 clear it on usable range — that is book range less a reserve allowance.
For reference and planning interest. Not for operational flight planning. Distances are great circle on a sphere from WGS-84 coordinates; block times assume still air. © 2026 Overfly.Flights