Nonstop flight route between Ottumwa, Iowa, United States and Great Falls, Montana, United States:
Departure Airport:

Arrival Airport:

Distance from OTM to GFA:
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- About this route
- OTM Airport Information
- GFA Airport Information
- Facts about OTM
- Facts about GFA
- Map of Nearest Airports to OTM
- List of Nearest Airports to OTM
- Map of Furthest Airports from OTM
- List of Furthest Airports from OTM
- Map of Nearest Airports to GFA
- List of Nearest Airports to GFA
- Map of Furthest Airports from GFA
- List of Furthest Airports from GFA
About this route:
A direct, nonstop flight between Ottumwa Regional Airport (OTM), Ottumwa, Iowa, United States and Malmstrom Air Force Base (GFA), Great Falls, Montana, United States would travel a Great Circle distance of 1,023 miles (or 1,647 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 Ottumwa Regional Airport and Malmstrom Air Force Base, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | OTM / KOTM |
Airport Name: | Ottumwa Regional Airport |
Location: | Ottumwa, Iowa, United States |
GPS Coordinates: | 41°6'24"N by 92°26'53"W |
Area Served: | Ottumwa, Iowa |
Operator/Owner: | City of Ottumwa |
Airport Type: | Public |
Elevation: | 845 feet (258 meters) |
# of Runways: | 2 |
View all routes: | Routes from OTM |
More Information: | OTM Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | GFA / KGFA |
Airport Names: |
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Location: | Great Falls, Montana, United States |
GPS Coordinates: | 47°30'16"N by 111°11'13"W |
View all routes: | Routes from GFA |
More Information: | GFA Maps & Info |
Facts about Ottumwa Regional Airport (OTM):
- For the 12-month period ending June 4, 2009, the airport had 16,450 general aviation aircraft operations, an average of 45 per day.
- The furthest airport from Ottumwa Regional Airport (OTM) is Margaret River Airport (MGV), which is located 10,856 miles (17,470 kilometers) away in Margaret River, Western Australia, Australia.
- The closest airport to Ottumwa Regional Airport (OTM) is Fairfield Municipal Airport (FFL), which is located 25 miles (40 kilometers) E of OTM.
- In 2002, the City of Ottumwa, in conjunction with the Federal Aviation Administration constructed a new terminal at the airport, replacing the World War II-era operations building that had served as the terminal.
- Ottumwa Regional Airport (OTM) has 2 runways.
- Because of Ottumwa Regional Airport's relatively low elevation of 845 feet, planes can take off or land at Ottumwa Regional 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.
- With the end of World War II and much less need for large numbers of aviators, NAS Ottumwa was transitioned from a flight training role to one of classroom-based pre-flight training on December 7, 1945—exactly four years after the Japanese attack on Pearl Harbor.
Facts about Malmstrom Air Force Base (GFA):
- Malmstrom Air Force Base traces its beginnings back to 1939 when World War II broke out in Europe.
- With the development of the three-stage, solid-fuel Minuteman I missile in the late 1950s SAC began searching for sites to deploy this revolutionary weapon.
- The closest airport to Malmstrom Air Force Base (GFA) is Great Falls International Airport (GTF), which is located only 9 miles (14 kilometers) W of GFA.
- By 1954, several aircraft control and warning squadrons had been formed at the base.
- The base's runway was closed on 31 December 1996 for aircraft operations.
- This included one of the greatest technology transfers in the history of the world.
- Z-147 was completely replaced by a new ARSR-4 JSS site on Bootlegger Ridge, about 14 miles northeast of Great Falls AFB.
- In addition to being known as "Malmstrom Air Force Base", another name for GFA is "Malmstrom AFB".
- The furthest airport from Malmstrom Air Force Base (GFA) is Sir Gaëtan Duval Airport (RRG), which is located 10,495 miles (16,891 kilometers) away in Rodrigues Island, Mauritius.