Nonstop flight route between Hilo, Hawaii, United States and Sidney, Montana, United States:

About this route:

A direct, nonstop flight between Hilo International Airport (ITO), Hilo, Hawaii, United States and Sidney-Richland Municipal Airport (SDY), Sidney, Montana, United States would travel a Great Circle distance of 3,420 miles (or 5,504 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 Hilo International Airport and Sidney-Richland Municipal 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 Hilo International Airport and Sidney-Richland Municipal 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 Hilo International Airport (ITO):

• Sixteen months after the dedication, scheduled inter-island service began on November 11, 1929 by Inter-Island Airways, the forerunner of Hawaiian Airlines.
• The introduction of overseas service to General Lyman Field initially met with success.
• Because of Hilo International Airport's relatively low elevation of 38 feet, planes can take off or land at Hilo International 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.
• Hilo International Airport has two runways.
• Hilo International Airport handled 1,279,342 passengers last year.
• The closest airport to Hilo International Airport (ITO) is Pōhakuloa Training Area (BSF), which is located 44 miles (71 kilometers) W of ITO.
• Hilo International Airport (ITO) has 2 runways.
• Work began on an interim overseas terminal at General Lyman Field in November 1968.
• The furthest airport from Hilo International Airport (ITO) is Maun Airport (MUB), which is nearly antipodal to Hilo International Airport (meaning Hilo International Airport is almost on the exact opposite side of the Earth from Maun Airport), and is located 12,336 miles (19,854 kilometers) away in Maun, Botswana.
• Today, Hilo International Airport is the smallest of the state's five major airports in terms of passenger arrivals and departures.

Facts about Sidney-Richland Municipal Airport (SDY):

• 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.
• Sidney-Richland Municipal Airport is a public use airport located one nautical mile west of the central business district of Sidney, a city in Richland County, Montana, United States.
• As per the Federal Aviation Administration, this airport had 2,031 passenger boardings in calendar year 2008, 2,766 in 2009, and 3,659 in 2010.