Nonstop flight route between Idaho Falls, Idaho, United States and St. Mary's, Alaska, United States:
Departure Airport:
(43°30'48"N by 112°4'14"W)
Arrival Airport:
(62°3'38"N by 163°18'6"W)
Distance from IDA to KSM:
2,405.18 miles (3,870.76 km)
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Jump to:
- About this route
- IDA Airport Information
- KSM Airport Information
- Facts about IDA
- Facts about KSM
- Map of Nearest Airports to IDA
- List of Nearest Airports to IDA
- Map of Furthest Airports from IDA
- List of Furthest Airports from IDA
- 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 Idaho Falls Regional Airport (IDA), Idaho Falls, Idaho, United States and St. Mary's Airport (KSM), St. Mary's, Alaska, United States would travel a Great Circle distance of 2,405 miles (or 3,871 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 relatively short distance between Idaho Falls Regional Airport and St. Mary's Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
| IATA / ICAO Codes: | IDA / KIDA |
| Airport Names: |
|
| Location: | Idaho Falls, Idaho, United States |
| GPS Coordinates: | 43°30'48"N by 112°4'14"W |
| Area Served: | Idaho Falls, Idaho |
| Operator/Owner: | City of Idaho Falls |
| Airport Type: | Public |
| Elevation: | 4744 feet (1,446 meters) |
| # of Runways: | 2 |
| View all routes: | Routes from IDA |
| More Information: | IDA 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 Idaho Falls Regional Airport (IDA):
- The closest airport to Idaho Falls Regional Airport (IDA) is Dubois Municipal Airport (DBS), which is located 45 miles (73 kilometers) N of IDA.
- Idaho Falls Regional Airport covers an area of 866 acres at an elevation of 4,744 feet above mean sea level.
- Idaho Falls Regional Airport is a city owned, public use airport located two nautical miles northwest of the central business district of Idaho Falls, a city in Bonneville County, Idaho, United States.
- Idaho Falls Regional Airport (IDA) has 2 runways.
- In addition to being known as "Idaho Falls Regional Airport", another name for IDA is "Fanning Field".
- Because of Idaho Falls Regional Airport's high elevation of 4,744 feet, planes must typically fly at a faster airspeed in order to takeoff or land at IDA. Combined with a high temperature, this could make IDA a "Hot & High" airport, where the air density is lower than it would otherwise be at sea level.
- The furthest airport from Idaho Falls Regional Airport (IDA) is Sir Gaëtan Duval Airport (RRG), which is located 10,774 miles (17,339 kilometers) away in Rodrigues Island, Mauritius.
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.
- 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.
- 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.
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 45.43 miles (73.11 km) N | Dubois Municipal Airport (DBS) | Dubois, Idaho, United States |     |
| 2 | 49.40 miles (79.49 km) SSW | Pocatello Regional Airport (PIH) | Pocatello, Idaho, United States | |
| 3 | 67.06 miles (107.92 km) E | Jackson Hole Airport (JAC) | Jackson, Wyoming, United States | |
| 4 | 79.57 miles (128.06 km) SE | Afton Municipal Airport (AFO) | Afton, Wyoming, United States | |
| 5 | 93.93 miles (151.17 km) NNE | Yellowstone Airport (WYS) | West Yellowstone, Montana, United States | |
| 6 | 109.00 miles (175.42 km) SW | Burley Municipal Airport (BYI) | Burley, Idaho, United States | |
| 7 | 111.48 miles (179.41 km) W | Friedman Memorial Airport (SUN) | Hailey, Idaho, United States | |
| 8 | 117.92 miles (189.78 km) ESE | Miley Memorial Field (BPI) | Big Piney, Wyoming, United States | |
| 9 | 119.53 miles (192.36 km) S | Logan-Cache Airport (LGU) | Logan, Utah, United States | |
| 10 | 122.66 miles (197.41 km) N | Dillon Airport (DLN) | Dillon, Montana, United States | |
| 11 | 124.41 miles (200.22 km) ESE | Ralph Wenz Field (PWY) | Pinedale, Wyoming, United States | |
| 12 | 127.46 miles (205.13 km) NW | Challis Airport (CHL) | Challis, Idaho, United States | |
| 13 | 135.50 miles (218.07 km) S | Brigham City Airport (BMC) | Brigham City, Utah, United States | |
| 14 | 139.78 miles (224.96 km) SE | Kemmerer Municipal Airport (EMM) | Kemmerer, Wyoming, United States | |
| 15 | 141.42 miles (227.59 km) WSW | Magic Valley Regional Airport (TWF) | Twin Falls, Idaho, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,774.23 miles (17,339.40 km) S | Sir Gaëtan Duval Airport (RRG) | Rodrigues Island, Mauritius | |
| 2 | 10,743.43 miles (17,289.84 km) SSE | Pierrefonds Airport (ZSE) | Saint-Pierre, Réunion | |
| 3 | 10,735.77 miles (17,277.51 km) SSE | Sir Seewoosagur Ramgoolam International Airport (MRU) | Plaisance, Mauritius | |
| 4 | 10,717.97 miles (17,248.86 km) SSE | Roland Garros Airport (RUN) | St Denis, Réunion, France | |
| 5 | 10,696.57 miles (17,214.42 km) SE | Tôlanaro Airport (FTU) | Tôlanaro, Madagascar | |
| 6 | 10,591.46 miles (17,045.27 km) SE | Ampanihy Airport (AMP) | Ampanihy, Madagascar | |
| 7 | 10,528.69 miles (16,944.23 km) SE | Mananjary Airport (MNJ) | Mananjary, Madagascar | |
| 8 | 10,499.64 miles (16,897.49 km) SE | Fianarantsoa Airport (WFI) | Fianarantsoa, Madagascar | |
| 9 | 10,395.87 miles (16,730.50 km) SE | Manja Airport (MJA) | Manja, Menabe, Madagascar | |
| 10 | 10,393.85 miles (16,727.24 km) SE | Andavadoaka Airport (DVD) | Andavadoaka, Toliara province, Atsimo-Andrefana region, Madagascar | |
| 11 | 10,378.39 miles (16,702.37 km) SE | Morombe Airport (MXM) | Morombe, Madagascar | |
| 12 | 10,376.06 miles (16,698.61 km) SE | Toamasino Airport (TMM) | Toamasina, Madagascar | |
| 13 | 10,356.83 miles (16,667.66 km) SE | Ivato International Airport (TNR) | Antananarivo, Madagascar | |
| 14 | 10,332.16 miles (16,627.96 km) SE | Miandrivazo Airport (ZVA) | Miandrivazo, Madagascar | |
| 15 | 10,326.16 miles (16,618.31 km) SE | Sainte Marie Airport (SMS) | Île Sainte-Marie, Madagascar | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 12.52 miles (20.15 km) W | Mountain Village Airport (MOU) | Mountain Village, Alaska, United States | |
| 2 | 15.71 miles (25.28 km) ESE | Pilot Station Airport (PQS) | Pilot Station, Alaska, United States | |
| 3 | 43.61 miles (70.18 km) ESE | Marshall Don Hunter Sr. Airport (MLL) | Marshall, Alaska, United States | |
| 4 | 58.95 miles (94.87 km) WNW | Sheldon Point Airport (SXP) | Sheldon Point, Alaska, United States | |
| 5 | 61.02 miles (98.20 km) NW | Alakanuk Airport (AUK) | Alakanuk, Alaska, United States | |
| 6 | 62.90 miles (101.24 km) NW | Emmonak Airport (EMK) | Emmonak, Alaska, United States | |
| 7 | 67.40 miles (108.48 km) N | Kotlik Airport (KOT) | Kotlik, Alaska, United States | |
| 8 | 67.43 miles (108.52 km) ESE | Russian Mission Airport (RSH) | Russian Mission, Alaska, United States | |
| 9 | 75.21 miles (121.04 km) W | Scammon Bay Airport (SCM) | Scammon Bay, Alaska, United States | |
| 10 | 83.21 miles (133.91 km) WSW | Chevak Airport (VAK) | Chevak, Alaska, United States | |
| 11 | 84.72 miles (136.35 km) SSE | Nunapitchuk Airport (NUP) | Nunapitchuk, Alaska, United States | |
| 12 | 85.97 miles (138.35 km) SSE | Kasigluk Airport (KUK) | Kasigluk, Alaska, United States | |
| 13 | 88.49 miles (142.42 km) W | Cape Romanzof Air Force Station Cape Romanzof Long Range Radar Site (CZF) | Cape Romanzof, Alaska, United States | |
| 14 | 89.19 miles (143.53 km) SSW | Newtok Airport (WWT) | Newtok, Alaska, United States | |
| 15 | 89.22 miles (143.59 km) SSE | Atmautluak Airport (ATT) | Atmautluak, Alaska, United States | |
| Rank | Distance & Direction | Airport Name & IATA Code | Airport Location | Further Actions |
| 1 | 10,494.08 miles (16,888.54 km) S | Cape Town International Airport (CPT) | Cape Town, South Africa | |
| 2 | 10,482.44 miles (16,869.80 km) S | George Airport (GRJ) | George, South Africa | |
| 3 | 10,457.83 miles (16,830.21 km) SSW | Port Elizabeth International Airport (PLZ) | Port Elizabeth, South Africa | |
| 4 | 10,416.76 miles (16,764.12 km) SSW | Port Alfred Airport (AFD) | Port Alfred, South Africa | |
| 5 | 10,371.90 miles (16,691.92 km) SSW | East London Airport (ELS) | East London, South Africa | |
| 6 | 10,261.64 miles (16,514.46 km) SSW | Mthatha Airport (UTT) | Mthatha, South Africa | |
| 7 | 10,199.66 miles (16,414.71 km) S | Kleinsee Airport (KLZ) | Kleinzee, South Africa | |
| 8 | 10,195.75 miles (16,408.43 km) SSW | Margate Airport (MGH) | Margate, KwaZulu-Natal, South Africa | |
| 9 | 10,169.94 miles (16,366.89 km) S | Aggeneys Airport (AGZ) | Aggeneys, South Africa | |
| 10 | 10,169.94 miles (16,366.89 km) S | Wild Coast Sun Airport (MZF) | Mzamba, South Africa | |
| 11 | 10,157.43 miles (16,346.75 km) SSW | Mafeteng Airport (MFC) | Mafeteng, Lesotho | |
| 12 | 10,151.99 miles (16,338.00 km) SSW | Semonkong Airport (SOK) | Semonkong, Lesotho | |
| 13 | 10,149.37 miles (16,333.79 km) SSW | Lebakeng Airport (LEF) | Lebakeng, Lesotho | |
| 14 | 10,143.31 miles (16,324.03 km) SSW | Lesobeng Airport (LES) | Lesobeng, Lesotho | |
| 15 | 10,133.50 miles (16,308.25 km) SE | Teniente Rodolfo Marsh Airport (TNM) | Villa Las Estrellas, Antarctica | |