Infrastructure :
Air service
There are numerous airports and airstrips distributed throughout the state, but this map depicts those with runways of more than 4,000 feet in length. In most cases, a primary runway of greater than 5,000 feet is required for commercial air service.
As of 2007, nine cities had scheduled passenger service: Minneapolis International, Rochester, Brainerd, Bemdji, Duluth, Hibbing, International Falls, Saint Cloud and Thief River Falls. Besides runway length, to have scheduled passenger service a community must have an adequate number of actual or potential passengers to make service cost effective for the airline. With the exception of Hibbing and Thief River Falls, the air service cities in Minnesota all have 19,000 or more annual enplanements.
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