The flight distance from Noi Bai International Airport (HAN) in Hanoi, Vietnam to Buyant-Ukhaa International Airport (ULN) in Ulan Bator, Mongolia is 2,961 kilometers (1,840 miles / 1,599 nautical miles). The estimated flight time for this route is approximately 4h, flying north at a heading of 1°.

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 Vietnam with Mongolia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 10:01 in Hanoi, it's 11:01 in Ulan Bator.

There is a significant elevation difference of 4,325 feet between the two airports. Buyant-Ukhaa International Airport sits higher than Noi Bai International Airport.

The return flight from Ulan Bator (ULN) to Hanoi (HAN) follows a heading of 182° (south). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

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