Nonstop flight route between Gary, Indiana (near Chicago), United States and Great Falls, Montana, United States:
Departure Airport:

Arrival Airport:

Distance from GYY to GFA:
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- About this route
- GYY Airport Information
- GFA Airport Information
- Facts about GYY
- Facts about GFA
- Map of Nearest Airports to GYY
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- Map of Furthest Airports from GYY
- List of Furthest Airports from GYY
- Map of Nearest Airports to GFA
- List of Nearest Airports to GFA
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- List of Furthest Airports from GFA
About this route:
A direct, nonstop flight between Gary/Chicago International Airport (GYY), Gary, Indiana (near Chicago), United States and Malmstrom Air Force Base (GFA), Great Falls, Montana, United States would travel a Great Circle distance of 1,233 miles (or 1,985 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 Gary/Chicago International 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: | GYY / KGYY |
Airport Name: | Gary/Chicago International Airport |
Location: | Gary, Indiana (near Chicago), United States |
GPS Coordinates: | 41°36'59"N by 87°24'46"W |
Area Served: | Gary, Indiana |
Operator/Owner: | Gary/Chicago Airport Authority |
Airport Type: | Public |
Elevation: | 591 feet (180 meters) |
# of Runways: | 2 |
View all routes: | Routes from GYY |
More Information: | GYY 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 Gary/Chicago International Airport (GYY):
- Because of Gary/Chicago International Airport's relatively low elevation of 591 feet, planes can take off or land at Gary/Chicago 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.
- On the afternoon of March 22, 2013, the FAA closed the airport's control tower, along with other airports in Illinois.
- The furthest airport from Gary/Chicago International Airport (GYY) is Margaret River Airport (MGV), which is located 11,103 miles (17,868 kilometers) away in Margaret River, Western Australia, Australia.
- Gary/Chicago International Airport (GYY) has 2 runways.
- Skybus Airlines served the airport until the airline folded on April 4, 2008.
- Federal funds were secured in January 2006 to move railroad tracks away from the northwest corner to allow extension of the main runway to 9,000 feet, as well as add gates to the existing passenger terminal building.
- The closest airport to Gary/Chicago International Airport (GYY) is Chicago Midway International Airport (MDW), which is located 21 miles (34 kilometers) NW of GYY.
Facts about Malmstrom Air Force Base (GFA):
- 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.
- 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.
- Great Falls played a major aerial defense role in North American air defense mission.
- On 3 July 1963, following 28 months of construction, the wing and its three squadrons became operational.
- Great Falls AAB was assigned to II Bomber Command, Second Air Force.
- In addition to being known as "Malmstrom Air Force Base", another name for GFA is "Malmstrom AFB".
- After World War II ended Great Falls AAB assumed a support mission for military personnel assigned to Alaskan military installations.
- Later, the 517th Air Transport Wing was redesginated the 1701st Air Transport Wing on 1 June 1948 when Air Transport Command was redesignated the Military Air Transport Service.
- DC-20 was initially under the Great Falls Air Defense Sector, established on 1 March 1959.
- 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.