Air on March 10, 2006, for $2 million. During the concept phase, the subsidiary was known as "NewCo". Compass' operations were limited to 76-seat aircraft or less, due to the language in the pilot contract at the mainline carrier. On September 28, 2006, Compass Airlines officially received approval from the United States Department of Transportation to begin operations. On April 5, 2007, Compass Airlines received FAA certification to begin commercial passenger operations with a single CRJ-200 (N601XJ). On May 2, 2007, the airline had its first revenue flight from Washington Dulles International Airport to Minneapolis−Saint Paul International Airport, which maintained the operating certificate. Compass implemented Embraer operations on August 21, 2007. On July 1, 2010, Delta Air Lines announced that it sold Compass Airlines to Trans States Holdings for US$20.5 million. Despite the change in ownership, Compass still shared many things with its former parents, including being headquartered in a Delta-owned building, and a logo that was a modified version of the final Northwest Airlines logo. On March 27, 2015, the airline began flying one of twenty brand new Embraer E-175, operating for American Airlines under the American Eagle brand, with the initial flight being from Los Angeles International Airport to Houston Intercontinental Airport. In August 2019, Delta Air Lines made the decision to reduce the number of regional carriers that fly under the Delta Connection brand and terminated its agreement for regional flying with Compass Airlines. This resulted in the removal of 36 aircraft from the airline and reduced the number of aircraft flying for Compass Airlines from 56 to 20 by June 2020. This schedule was later accelerated to remove all Delta-owned Embraer E175s from the Compass operation by April 1, 2020. Compass had maintenance bases in Phoenix, San Jose, Los Angeles, San Francisco, and Seattle/Tacoma prior to its closure. In January 2020, Compass announced that it would be closing its Phoenix crew base. The following month, the airline announced in a memo to employees that its Seattle-Tacoma crew base would also be closing. In March 2020, due to the reduction in demand in response to the COVID-19 pandemic, Compass announced it would cease operations on April 7. The final revenue flight operated by Compass was American Eagle Flight 6047 from Tulsa, Oklahoma to Los Angeles, California on April 5, 2020. The airline had originally planned to be acquired by Breeze Airways. The acquisition was later canceled. Labor