Nonstop flight route between Great Falls, Montana, United States and Port Alsworth, Alaska, United States:
Departure Airport:

Arrival Airport:

Distance from GFA to PTA:
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- About this route
- GFA Airport Information
- PTA Airport Information
- Facts about GFA
- Facts about PTA
- Map of Nearest Airports to GFA
- List of Nearest Airports to GFA
- Map of Furthest Airports from GFA
- List of Furthest Airports from GFA
- Map of Nearest Airports to PTA
- List of Nearest Airports to PTA
- Map of Furthest Airports from PTA
- List of Furthest Airports from PTA
About this route:
A direct, nonstop flight between Malmstrom Air Force Base (GFA), Great Falls, Montana, United States and Port Alsworth Airport (PTA), Port Alsworth, Alaska, United States would travel a Great Circle distance of 1,919 miles (or 3,088 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 Malmstrom Air Force Base and Port Alsworth Airport, the route shown on this map most likely still appears to be a straight line.
Departure 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 |
Arrival Airport Information:
IATA / ICAO Codes: | PTA / PALJ |
Airport Names: |
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Location: | Port Alsworth, Alaska, United States |
GPS Coordinates: | 60°12'15"N by 154°19'8"W |
Area Served: | Port Alsworth, Alaska |
Operator/Owner: | Glen Alsworth, Sr. |
Airport Type: | Private |
Elevation: | 280 feet (85 meters) |
# of Runways: | 1 |
View all routes: | Routes from PTA |
More Information: | PTA Maps & Info |
Facts about Malmstrom Air Force Base (GFA):
- 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.
- In addition to being known as "Malmstrom Air Force Base", another name for GFA is "Malmstrom AFB".
- Great Falls AAB was assigned to II Bomber Command, Second Air Force.
- The base's runway was closed on 31 December 1996 for aircraft operations.
- Great Falls played a major aerial defense role in North American air defense mission.
- DC-20 was initially under the Great Falls Air Defense Sector, established on 1 March 1959.
- 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.
- On 18 December 1953, Great Falls AFB was transferred from Military Air Transport Service to Strategic Air Command, although MATS units remained at the base for several years.
- In 1959 a SAGE data center was established at Malmstrom.
- Upon completion of the B-17 training program, in October 1943, Great Falls Army Air Base was transferred to the Air Transport Command and units from Gore Field were transferred to the base.
- Aircraft shipments to the Soviet Union stopped in September 1945, when World War II ended, with approximately 8,000 aircraft having been processed in a 21-month period.
Facts about Port Alsworth Airport (PTA):
- In addition to being known as "Port Alsworth Airport", other names for PTA include "TPO" and "Port Alsworth".
- The closest airport to Port Alsworth Airport (PTA) is Nondalton Airport (NNL), which is located 24 miles (38 kilometers) SW of PTA.
- Port Alsworth Airport (PTA) currently has only 1 runway.
- Because of Port Alsworth Airport's relatively low elevation of 280 feet, planes can take off or land at Port Alsworth 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 Port Alsworth Airport (PTA) is Port Elizabeth International Airport (PLZ), which is located 10,625 miles (17,100 kilometers) away in Port Elizabeth, South Africa.