Northwest Airlink, the code-share affiliate carriers operating for Northwest Airlines, served Casper on two occasions. The first was in 1986 with flights to Billings operated by Big Sky Airlines using Fairchild Swearingen Metroliner aircraft and then from 2004 through 2009 by Mesaba Airlines with flights to Minneapolis using Canadair CRJ-200 regional jets. Big Sky had been previously serving Casper under their own brand from 1980 through 1986 and returned for a short time in 2003 with flights to Billings, again under their own brand.