Nonstop flight route between Sidney, Montana, United States and Kailua / Kona, Hawaii, United States:

About this route:

A direct, nonstop flight between Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States and Kona International Airport at Keāhole (KOA), Kailua / Kona, Hawaii, United States would travel a Great Circle distance of 3,464 miles (or 5,574 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 Sidney-Richland Municipal Airport and Kona International Airport at Keāhole, 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 Sidney-Richland Municipal Airport and Kona International Airport at Keāhole. 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 Sidney-Richland Municipal Airport (SDY):

• Scheduled air service temporarily ceased on March 8, 2008, when Big Sky Airlines ended operations in bankruptcy.
• The closest airport to Sidney-Richland Municipal Airport (SDY) is Sloulin Field International Airport (ISN), which is located 41 miles (67 kilometers) NE of SDY.
• Sidney-Richland Municipal Airport (SDY) has 2 runways.
• The furthest airport from Sidney-Richland Municipal Airport (SDY) is Sir Gaëtan Duval Airport (RRG), which is located 10,383 miles (16,711 kilometers) away in Rodrigues Island, Mauritius.

Facts about Kona International Airport at Keāhole (KOA):

• Kona International is the only remaining major airport in the Hawaiian Islands where a mobile ramp is used to plane and deplane passengers.
• Because of Kona International Airport at Keāhole's relatively low elevation of 47 feet, planes can take off or land at Kona International Airport at Keāhole 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.
• Kona International Airport at Keāhole handled 2,649,493 passengers last year.
• Tourism has helped fuel Hawaii County's overall population growth.
• Kona International Airport at Keāhole (KOA) currently has only 1 runway.
• Runway extension to 11,000 feet was in 1994, making it the largest in the Hawaiian Islands after Honolulu.
• Kona Airport's master plan, completed in 2010, calls for a second runway while keeping the option to extend the airport's primary runway to 12,000 feet if required.
• The closest airport to Kona International Airport at Keāhole (KOA) is Pōhakuloa Training Area (BSF), which is located 22 miles (36 kilometers) ENE of KOA.
• In addition to being known as "Kona International Airport at Keāhole", another name for KOA is "Kona International Airport".
• It was originally known as Ke-āhole Airport, since the ʻāhole fish was found nearby.
• The furthest airport from Kona International Airport at Keāhole (KOA) is Maun Airport (MUB), which is nearly antipodal to Kona International Airport at Keāhole (meaning Kona International Airport at Keāhole is almost on the exact opposite side of the Earth from Maun Airport), and is located 12,399 miles (19,954 kilometers) away in Maun, Botswana.