Pioneer Airlines of Denver, CO and Royale Airlines of Shreveport, LA operated as Continental Commuter carriers from 1983 through 1986 and were the first code-sharing feeder carrier's on behalf of Continental Airlines. Pioneer was the feeder at Continental's Denver hub but ceased operations in mid-1986. Royale was the feeder at the Houston hub utilizing Douglas DC-9-10 jets as well as Gulfstream I propjets in addition to other commuter turboprop aircraft types and was reclassified as Continental Express by the fall of 1986.