Comair was an American regional airline, a wholly owned subsidiary of Delta Air Lines, headquartered at Cincinnati/Northern Kentucky International Airport in Boone County, Kentucky, United States. Operating under the brand name Delta Connection, Comair operated passenger services to destinations in the United States, Canada, Mexico and the Bahamas. It was the world's largest regional airline, and operated from 1977 until 2012. History The airline was established in March 1977, and started operations in April 1977. Patrick J. Sowers, Robert T. Tranter, David Mueller and his father Raymond founded the airline in Cincinnati. At the end of its first year of highly profitable operations, two of the company founders, Sowers and Tranter, abruptly resigned the day following the first annual meeting as a "demand for immediate change" after they had uncovered repeated unacceptable and unsafe operational practices by one of the other partners. Comair suffered a fatal crash the year following their departure. Comair began scheduled services to Akron/Canton, Cleveland, and Evansville with two Piper Navajo aircraft. Embraer EMB-110 Bandeirante twin-engine turboprop commuter aircraft were added to Comair's fleet in 1982. Under its parent Comair Holdings, it became a public company in July 1981. In 1984, Comair became a Delta Connection carrier with Delta Air Lines' establishment of a hub at Cincinnati/Northern Kentucky International Airport (CVG). That same year, Comair introduced its first international flights from Cincinnati to Toronto. Turboprop aircraft operated by Comair on Delta Connection code sharing flights serving the Cincinnati hub included the Embraer EMB-110 Bandeirante, Embraer EMB-120 Brasilia, Saab 340, Short 330 and Swearingen Metro. In July 1986 Delta Air Lines acquired 20% of Comair stock. The airline began operating a second hub at Orlando International Airport (MCO) during the late 1980s in support of the Delta hub at the airport. In 1992, Comair moved into Concourse C at CVG, as Delta Air Lines gradually continued to acquire more of the airlines stock. In 1993, Comair was the launch customer for the Canadair Regional Jet CRJ100 and would later operate the largest fleet in the world of this twin jet type. By 1999, Comair was the largest regional airline in the country worth over 2 billion, transporting 6 million passengers yearly to 83 destinations on 101 aircraft. That same year, in addition to shorter range flights from its Cincinnati and Orlando hubs, Comair as the Delta Connection was operating nonstop flights between Cincinnati and Nassau, Bahamas, nonstop