United Airlines, commonly known as United, is the world’s third largest airline by revenue and fleet size, and one of the founding members of Star Alliance. In 2010, the airline acquired Continental Airlines, then the third largest airli...
Piedmont Airlines, operating as US Airways Express, was the former feeder airline for US Airways, which integrated into American Airlines in 2015.
Tigerair Mandala was a low cost airline of Indonesia and part of Singapore-based Tigerair. Founded in 1969 as Mandala Airlines and acquired by Tigerair in 2012, it finally ceased operations in 2014 due to financial difficulties.