Delta Air Lines operates its own regional carrier, Endeavor Air, which is a wholly-owned subsidiary. Endeavor Air utilizes Bombardier CRJ900 and CRJ700 aircraft for short-haul routes across the northeastern, southeastern, and midwestern United States, as well as some international destinations in Canada and The Bahamas. The airline is based in Minneapolis, Minnesota, with crew domiciles in several major cities including Atlanta and New York City.
Endeavor Air's history dates back to 1985 when it was founded by Michael J. Brady as Express Airlines 1. Initially operating under Republic Airlines through a code-share agreement, the airline expanded rapidly by acquiring additional aircraft like the Saab 340s to support Republic Airlines' hubs.
In 1986, Northwest Airlines acquired Republic Airlines, leading Express Airlines I to operate as Northwest Airlink. This partnership saw steady growth throughout the late 1980s and early 1990s. In April 1997, Northwest purchased Express Airlines 1 from Phoenix Airline Services for nearly $33 million.