Nonstop flight route between Hilo, Hawaii, United States and St. Mary's, Alaska, United States:
Departure Airport:
Arrival Airport:
Distance from ITO to KSM:
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- About this route
 - ITO Airport Information
 - KSM Airport Information
 - Facts about ITO
 - Facts about KSM
 - Map of Nearest Airports to ITO
 - List of Nearest Airports to ITO
 - Map of Furthest Airports from ITO
 - List of Furthest Airports from ITO
 - Map of Nearest Airports to KSM
 - List of Nearest Airports to KSM
 - Map of Furthest Airports from KSM
 - List of Furthest Airports from KSM
 
About this route:
A direct, nonstop flight between Hilo International Airport (ITO), Hilo, Hawaii, United States and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 2,952 miles (or 4,751 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 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 Hilo International 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:
| IATA / ICAO Codes: | ITO / PHTO | 
| Airport Name: | Hilo International Airport | 
| Location: | Hilo, Hawaii, United States | 
| GPS Coordinates: | 19°43'13"N by 155°2'53"W | 
| Operator/Owner: | Hawaiʻi State Department of Transportation | 
| Airport Type: | Public | 
| Elevation: | 38 feet (12 meters) | 
| # of Runways: | 2 | 
| View all routes: | Routes from ITO | 
| More Information: | ITO Maps & Info | 
Arrival Airport Information:
| IATA / ICAO Codes: | KSM / PASM | 
| Airport Name: | St. Mary's Airport | 
| Location: | St. Mary's, Alaska, United States | 
| GPS Coordinates: | 62°3'38"N by 163°18'6"W | 
| Operator/Owner: | Alaska DOT&PF | 
| Airport Type: | Public | 
| Elevation: | 312 feet (95 meters) | 
| # of Runways: | 2 | 
| View all routes: | Routes from KSM | 
| More Information: | KSM Maps & Info | 
Facts about Hilo International Airport (ITO):
- 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 handled 1,279,342 passengers last year.
 - Today, Hilo International Airport is the smallest of the state's five major airports in terms of passenger arrivals and departures.
 - The end of the war did not immediately bring about a return to civilian control of General Lyman Field.
 - Although designed as the second gateway into and out of Hawaiʻi, for many years Hilo had been Hawaiʻi's only major airport lacking non-stop flights to North America.
 - Efforts finally had some success on April 28, 2006, when ATA Airlines re-established daily non-stop service between Hilo and Oakland International Airport in California aboard its Boeing 737-800 aircraft.
 - Hilo International Airport (ITO) has 2 runways.
 - Hilo International Airport has two runways.
 - 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.
 - The passenger terminal complex, including commuter facilities, is at the southern edge of Hilo International Airport and is served by an access roadway from Hawaii Belt Road at Kekūanaōʻa Avenue.
 - In the wake of ATA's bankruptcy, the Hawaii Tribune-Herald reported an undisclosed major U.S.
 - 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.
 - The commuter terminal is located in a small, stand alone building approximately 0.25 miles to the west of the main passenger terminal.
 
Facts about St. Mary's Airport (KSM):
- St. Mary's Airport (KSM) has 2 runways.
 - 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 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.
 - 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.
 
