Nonstop flight route between Ulaangom, Uvs Province, Mongolia and Barter Island, Alaska, United States:

About this route:

A direct, nonstop flight between Ulaangom Airport (ULO), Ulaangom, Uvs Province, Mongolia and Barter Island LRRS Airport (BTI), Barter Island, Alaska, United States would travel a Great Circle distance of 3,686 miles (or 5,932 kilometers).

A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Ulaangom Airport and Barter Island LRRS Airport, the route shown on this map most likely appears curved because of this reason.

Try it at home! Get a globe and tightly lay a string between Ulaangom Airport and Barter Island LRRS Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Ulaangom Airport (ULO):

• Ulaangom Airport handled 12,300 passengers last year.
• The closest airport to Ulaangom Airport (ULO) is Ölgii Airport (ULG), which is located 118 miles (190 kilometers) SW of ULO.
• The furthest airport from Ulaangom Airport (ULO) is Teniente Julio Gallardo Airfield (PNT), which is located 11,756 miles (18,920 kilometers) away in Puerto Natales, Chile.
• Ulaangom Airport (ULO) currently has only 1 runway.

Facts about Barter Island LRRS Airport (BTI):

• The closest airport to Barter Island LRRS Airport (BTI) is Deadhorse Airport (SCC), which is located 115 miles (184 kilometers) W of BTI.
• Barter Island LRRS Airport (BTI) currently has only 1 runway.
• The furthest airport from Barter Island LRRS Airport (BTI) is Teniente Rodolfo Marsh Airport (TNM), which is located 10,003 miles (16,099 kilometers) away in Villa Las Estrellas, Antarctica.
• The radar station was upgraded with an AN/FPS-117 minimally attended Long Range surveillance radar in the winter of 1990.
• In addition to being known as "Barter Island LRRS Airport", another name for BTI is "Barter Island LRRS BAR-MAIN".
• Each of the sites was staffed by civilian contract workers who had signed 18-month contracts, although they were visited by Air Force military personnel frequently.
• With the signing of the North American Air Defence Modernization agreement at the "Shamrock Summit" between Prime Minister Mulroney and President Reagan in Quebec City on 18 March 1985, the DEW Line began its eventual upgrading and transition becoming the North Warning System of today.
• Because of Barter Island LRRS Airport's relatively low elevation of 2 feet, planes can take off or land at Barter Island LRRS Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.