Note: American Airlines Group also controls the brand AmericanConnection along with the former certificated airline TWA Airlines LLC, (formerly Trans World Airlines)
List of defunct or merged carriers/firms - headquartered in Texas, but no longer in business
The following is a list of Air Transportation Firms certificated as FAA/DOT Certificated air carriers or doing business as similar type firms in which their primary business is an FAA/DOT Certificated Air Carrier in the conduct of commerce, based and headquartered directed from Texas. This basing and headquarter directing from Texas may be due to business acquisitions, mergers, or buyouts by; airline parent companies, airline holding companies, consortiums, private equity firms, or other strategic investment business schemes, which leave the FAA / DOT airlines air carrier operating certificate with a Texas-based firm.
Former certificated air transportation firms, headquartered in Texas
Pacific Wings, Dallas, Texas,(commuter airline and operates flights in Hawaii) operates the following brands of the certificated air carrier Pacific Wings which provide Essential Air Services to many small communities through federally subsidized contracts;
Metro Airlines, Houston, Texas then Dallas-Fort Worth International Airport then Grapevine, Texas (evolved into an airline holding firm with the acquisition of a number of different airlines)