subsequently merged with Southern Airways to form Republic Airlines which in 1979 was continuing to serve the airport with McDonnell Douglas DC-9-30 jets as well as Douglas DC-9-10 jets and McDonnell Douglas DC-9-50 jets in addition to Convair 580 turboprops with direct, no change of plane DC-9-30 service from Atlanta, direct one stop DC-9 and Convair 580 service from Chicago O'Hare via Milwaukee, and direct one stop DC-9 and Convair 580 service from Detroit via either Grand Rapids, MI or Lansing. Republic continued to serve Muskegon during the early 1980s with its flights in 1981 including direct, no change of plane DC-9 jet service to Baltimore, Miami, Nashville and Orlando as well as direct, no change of plane DC-9 jet service from Memphis, Montreal and New Orleans in addition to direct one stop DC-9 jet flights to Chicago O'Hare via Milwaukee plus nonstop and one stop DC-9 jets to Detroit. However, Republic was no longer serving the airport by the spring of 1984. According to the OAG, four airlines were serving Muskegon in late 1989 including American Eagle (airline brand) operating five daily nonstops from Chicago O'Hare with Short 360 turboprops on behalf of American Airlines via a code sharing agreement, Midwest Express Connection operated by Skyway Airlines with service on behalf of Midwest Express (which subsequently changed its name to Midwest Airlines) with four nonstops every weekday from Milwaukee flown with Beechcraft 1900 commuter propjets, Midway Connection operating on behalf of Midway Airlines (1976-1991) with five nonstops every weekday from Chicago Midway Airport flown with Dornier 228 commuter turboprops, and Northwest Airlink operated by Mesaba Airlines on behalf of Northwest Airlines via a code sharing agreement with three nonstops every weekday from Detroit flown with Fairchild Swearingen Metroliner commuter turboprops. By the spring of 1995, three airlines were serving the airport including American Eagle operating four daily nonstops from Chicago O'Hare with Saab 340 turboprops, Midwest Express Connection flying Beechcraft 1900s with three nonstops operated every weekday from Milwaukee plus one nonstop flown every weekday from both Flint and Lansing, and Northwest Airlink operated by Mesaba Airlines with five nonstops every weekday from Detroit flown with Metroliners. In 2005, Northwest Airlink operated by Mesaba was operating three daily nonstop flights to Detroit with Saab 340s while Midwest Connect (which was formerly Midwest Express Connection) operated by Skyway Airlines was flying four nonstops every weekday to Milwaukee with Beechcraft 1900s.