Pinnacle Airlines Corp. (NASDAQ: PNCL), an airline holding company, is the parent company of three wholly-owned operating sub ... sidiaries: Pinnacle Airlines, Inc., Colgan Air, Inc. and Mesaba Airlines. The corporate headquarters is located in Memphis, Tenn. Airport hub operations are located in Atlanta, Boston, Detroit, Newark, Washington Dulles, Houston, Memphis, Minneapolis and Salt Lake City. Pinnacle Airlines Corp. and its operating subsidiaries employ 7,700 People in North America.. Visit www.pncl.com for more information. read more