Nonstop flight route between St. Mary's, Alaska, United States and Helena / West Helena, Arkansas, United States:

About this route:

A direct, nonstop flight between St. Mary's Airport (KSM), St. Mary's, Alaska, United States and Thompson-Robbins AirportThompson-Robbins Army Airfield (HEE), Helena / West Helena, Arkansas, United States would travel a Great Circle distance of 3,588 miles (or 5,775 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 St. Mary's Airport and Thompson-Robbins AirportThompson-Robbins Army Airfield, 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 St. Mary's Airport and Thompson-Robbins AirportThompson-Robbins Army Airfield. 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 St. Mary's Airport (KSM):

• 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.
• 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.
• St. Mary's Airport (KSM) has 2 runways.
• 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.

Facts about Thompson-Robbins AirportThompson-Robbins Army Airfield (HEE):

• Because of Thompson-Robbins AirportThompson-Robbins Army Airfield's relatively low elevation of 242 feet, planes can take off or land at Thompson-Robbins AirportThompson-Robbins Army Airfield 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 Thompson-Robbins AirportThompson-Robbins Army Airfield (HEE) is Tunica Municipal Airport (UTM), which is located 20 miles (32 kilometers) ENE of HEE.
• The airport was established in 1941 by the United States Army Air Forces and is known as Thompson-Robbins Field.
• Thompson-Robbins AirportThompson-Robbins Army Airfield (HEE) has 2 runways.
• The FAA's National Plan of Integrated Airport Systems for 2011–2015 called it a general aviation airport.
• The furthest airport from Thompson-Robbins AirportThompson-Robbins Army Airfield (HEE) is Margaret River Airport (MGV), which is located 10,968 miles (17,651 kilometers) away in Margaret River, Western Australia, Australia.