The flight distance from Chek Lap Kok International Airport (HKG) in Hong Kong, Hong Kong to Buyant-Ukhaa International Airport (ULN) in Ulan Bator, Mongolia is 2,909 kilometers (1,808 miles / 1,571 nautical miles). The estimated flight time for this route is approximately 4h, flying north at a heading of 349°.

This is a medium-haul route that may be operated by either narrow-body or wide-body aircraft depending on demand. Passengers can expect a meal service on most carriers.

This is an international route connecting Hong Kong with Mongolia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 01:51 in Hong Kong, it's 01:51 in Ulan Bator.

There is a significant elevation difference of 4,336 feet between the two airports. Buyant-Ukhaa International Airport sits higher than Chek Lap Kok International Airport.

The return flight from Ulan Bator (ULN) to Hong Kong (HKG) follows a heading of 165° (south southeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Chek Lap Kok International Airport (HKG) and Buyant-Ukhaa International Airport (ULN) detail pages, or use our flight duration calculator to compare other routes.