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

Arrival Airport:

Distance from GTF to GYY:
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- About this route
- GTF Airport Information
- GYY Airport Information
- Facts about GTF
- Facts about GYY
- Map of Nearest Airports to GTF
- List of Nearest Airports to GTF
- Map of Furthest Airports from GTF
- List of Furthest Airports from GTF
- Map of Nearest Airports to GYY
- List of Nearest Airports to GYY
- Map of Furthest Airports from GYY
- List of Furthest Airports from GYY
About this route:
A direct, nonstop flight between Great Falls International Airport (GTF), Great Falls, Montana, United States and Gary/Chicago International Airport (GYY), Gary, Indiana (near Chicago), United States would travel a Great Circle distance of 1,241 miles (or 1,998 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 Great Falls International Airport and Gary/Chicago International Airport, the route shown on this map most likely still appears to be a straight line.
Departure Airport Information:
IATA / ICAO Codes: | GTF / KGTF |
Airport Names: |
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Location: | Great Falls, Montana, United States |
GPS Coordinates: | 47°28'58"N by 111°22'14"W |
Area Served: | Great Falls, Montana |
Operator/Owner: | Great Falls International Airport Authority |
Airport Type: | Public |
Elevation: | 3680 feet (1,122 meters) |
# of Runways: | 3 |
View all routes: | Routes from GTF |
More Information: | GTF Maps & Info |
Arrival 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 |
Facts about Great Falls International Airport (GTF):
- In 2011 the airport recorded the most boardings in its history.
- In addition to being known as "Great Falls International Airport", another name for GTF is "(former Great Falls Army Airfield)".
- Malmstrom Air Force Base, home of the 341st Missile Wing of the Air Force Global Strike Command, is 10 miles east of GTF, on the east side of Great Falls.
- Great Falls International Airport (GTF) has 3 runways.
- The closest airport to Great Falls International Airport (GTF) is Malmstrom Air Force Base (GFA), which is located only 9 miles (14 kilometers) E of GTF.
- Great Falls International Airport was initiated in November 1928.
- The furthest airport from Great Falls International Airport (GTF) is Sir Gaëtan Duval Airport (RRG), which is located 10,498 miles (16,896 kilometers) away in Rodrigues Island, Mauritius.
- Great Falls International Airport is a public/military airport in city limits three miles southwest of central Great Falls in Cascade County, Montana.
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.
- 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.
- 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 was once served by Pan Am, Southeast Airlines, SkyValue Airlines, Skybus Airlines and Hooters Air, with flights to cities such as Hartford, Connecticut.
- On the afternoon of March 22, 2013, the FAA closed the airport's control tower, along with other airports in Illinois.
- Gary/Chicago International Airport (GYY) has 2 runways.
- 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 South Shore Line commuter rail train serves the Gary/Chicago International Airport.
- Skybus Airlines served the airport until the airline folded on April 4, 2008.