Nonstop flight route between St. Mary's, Alaska, United States and Ottumwa, Iowa, United States:
Departure Airport:

Arrival Airport:

Distance from KSM to OTM:
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- About this route
- KSM Airport Information
- OTM Airport Information
- Facts about KSM
- Facts about OTM
- Map of Nearest Airports to KSM
- List of Nearest Airports to KSM
- Map of Furthest Airports from KSM
- List of Furthest Airports from KSM
- Map of Nearest Airports to OTM
- List of Nearest Airports to OTM
- Map of Furthest Airports from OTM
- List of Furthest Airports from OTM
About this route:
A direct, nonstop flight between St. Mary's Airport (KSM), St. Mary's, Alaska, United States and Ottumwa Regional Airport (OTM), Ottumwa, Iowa, United States would travel a Great Circle distance of 3,167 miles (or 5,098 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 St. Mary's Airport and Ottumwa Regional 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 St. Mary's Airport and Ottumwa Regional Airport. You'll see that it will travel the same route of the red line on this map!
Departure 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 |
Arrival 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 |
Facts about St. Mary's Airport (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.
- 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.
Facts about Ottumwa Regional Airport (OTM):
- 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.
- 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.
- The closest airport to Ottumwa Regional Airport (OTM) is Fairfield Municipal Airport (FFL), which is located 25 miles (40 kilometers) E of OTM.
- Ottumwa Regional Airport (OTM) has 2 runways.
- For the 12-month period ending June 4, 2009, the airport had 16,450 general aviation aircraft operations, an average of 45 per day.
- In December, 1947, Central States Airlines began commercial air service to Ottumwa.
- 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.