Nonstop flight route between White Plains, New York, United States and St. Mary's, Alaska, United States:

About this route:

A direct, nonstop flight between Westchester County Airport (HPN), White Plains, New York, United States and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 3,755 miles (or 6,043 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 Westchester County Airport and St. Mary's 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 Westchester County Airport and St. Mary's 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 Westchester County Airport (HPN):

• Westchester County Airport (HPN) has 2 runways.
• It serves Westchester, a northern suburb of New York City, and Fairfield County, Connecticut.
• In June 2009 Cape Air added service to Westchester, with service to Nantucket and Martha's Vineyard in Massachusetts.
• The furthest airport from Westchester County Airport (HPN) is Margaret River Airport (MGV), which is located 11,747 miles (18,906 kilometers) away in Margaret River, Western Australia, Australia.
• Westchester County Airport has several fixed-base operators, including Avitat, Signature Flight Support, Landmark, NetJets, Panorama, and Million Air.
• Also, due to its location near a number of residential neighborhoods, Westchester County Airport instituted a Voluntary Restraint from Flying Program, sometimes referred to as a voluntary curfew, which has helped to ease some of the local concern of noise resulting from airport activity.
• Westchester County Airport is also the current home of the New York Wing of the United States Civil Air Patrol, as well as the Southeastern Group of the New York Wing.
• The closest airport to Westchester County Airport (HPN) is Flushing Airport (closed 1984) (FLU), which is located 21 miles (34 kilometers) SSW of HPN.
• The airport is presently served by six airlines.
• Westchester County Airport was built during World War II in 1942 as a home to an Air National Guard unit to protect New York City and Rye Lake, part of the city's water supply system.
• Because of Westchester County Airport's relatively low elevation of 439 feet, planes can take off or land at Westchester County 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.

Facts about St. Mary's Airport (KSM):

• Because of St. Mary's Airport's relatively low elevation of 312 feet, planes can take off or land at St. Mary's 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.
• The closest airport to St. Mary's Airport (KSM) is Mountain Village Airport (MOU), which is located only 13 miles (20 kilometers) W of KSM.
• The furthest airport from St. Mary's Airport (KSM) is Cape Town International Airport (CPT), which is located 10,494 miles (16,889 kilometers) away in Cape Town, South Africa.
• St. Mary's Airport (KSM) has 2 runways.