Nonstop flight route between Marathon, Florida, United States and Gary, Indiana (near Chicago), United States:
Departure Airport:

Arrival Airport:

Distance from MTH to GYY:
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- About this route
- MTH Airport Information
- GYY Airport Information
- Facts about MTH
- Facts about GYY
- Map of Nearest Airports to MTH
- List of Nearest Airports to MTH
- Map of Furthest Airports from MTH
- List of Furthest Airports from MTH
- 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 Florida Keys Marathon Airport (MTH), Marathon, Florida, United States and Gary/Chicago International Airport (GYY), Gary, Indiana (near Chicago), United States would travel a Great Circle distance of 1,223 miles (or 1,968 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 Florida Keys Marathon 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: | MTH / KMTH |
Airport Name: | Florida Keys Marathon Airport |
Location: | Marathon, Florida, United States |
GPS Coordinates: | 24°43'33"N by 81°3'5"W |
Operator/Owner: | Monroe County |
Airport Type: | Public |
Elevation: | 7 feet (2 meters) |
# of Runways: | 1 |
View all routes: | Routes from MTH |
More Information: | MTH 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 Florida Keys Marathon Airport (MTH):
- However on December 1, 2006, the TSA bowed to the effective lobbying efforts of local government, congressional and business officials when it announced that screeners would be provided at the airport no later than February 15, 2007, even if it meant using a contractor.
- The closest airport to Florida Keys Marathon Airport (MTH) is NAS Key West (NQX), which is located 41 miles (67 kilometers) WSW of MTH.
- Florida Keys Marathon Airport (MTH) currently has only 1 runway.
- Because of Florida Keys Marathon Airport's relatively low elevation of 7 feet, planes can take off or land at Florida Keys Marathon 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.
- In mid summer of 2007, Delta announced it would end service to Marathon Airport due to low demand.
- The furthest airport from Florida Keys Marathon Airport (MTH) is Cocos (Keeling) Island Airport (CCK), which is located 11,560 miles (18,603 kilometers) away in Cocos Islands, Australia.
Facts about Gary/Chicago International Airport (GYY):
- 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.
- Federal Aviation Administration records say the airport had 4,353 passenger boardings in calendar year 2008, 1,633 in 2009 and 2,143 in 2010.
- On the afternoon of March 22, 2013, the FAA closed the airport's control tower, along with other airports in Illinois.
- 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.
- Gary/Chicago International Airport (GYY) has 2 runways.
- Chicago-based Boeing selected the airport to permanently base its Midwest corporate jet fleet.
- Gary/Chicago was a hub for seasonal carrier SkyValue Airlines from December 2006 to April 2007.