Regional Express, commonly known as Rex, is Australia's largest independent regional airline, operating scheduled passenger services to numerous regional and rural communities across the country. Founded in 2002, Rex emerged from the collapse of Ansett Australia and its subsidiaries, taking over many routes that had been served by Hazelton Airlines and Kendell Airlines. The airline has long been a lifeline for remote and regional communities in New South Wales, Victoria, South Australia, Queensland, Western Australia, and Tasmania. In 2021, Rex made a significant strategic move by entering the competitive domestic trunk routes between major Australian capital cities, directly challenging Qantas and Virgin Australia. Rex has faced financial turbulence in recent years, entering voluntary administration in July 2024 before being acquired by an investor group. The airline continues to operate and remains an important part of Australia's regional aviation network.