MBS International Airport, located in Freeland, Michigan, is a commercial and general aviation airport serving the nearby cities of Midland, Bay City, and Saginaw. It is included in the Federal Aviation Administration National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a non-hub primary commercial service facility. MBS was formerly named Tri-City Airport or Freeland Tri-City Airport, reflecting the “Tri-Cities” nickname of the region.