Northwest Airlink was the brand name of Northwest Airlines' regional airline service, which flew turboprop and regional jet aircraft from Northwest's domestic hubs in Minneapolis, Detroit, and Memphis. Service was primarily to small-to-medium-sized cities and towns where larger aircraft might not be economical to operate and also to larger markets to either provide additional capacity or more frequent flights than could be justified using mainline aircraft. The Northwest Airlink trade name was replaced by the Delta Connection trade name for Delta Air Lines following the Delta/Northwest merger.