On August 19, 2008 US Airways closed its night-flight hub at McCarran Airport, which had been established by predecessor America West Airlines in the 1990s. In order to maximize the use of its fleet, US Airways had been operating two banks of flights to and from McCarran in the middle of the night. The operation had made US Airways the second-busiest carrier at McCarran, providing over 100 daily round-trip flights. However, amid rising oil prices and continued demand for low fares, the airline decided to close the hub. In 2011, US Airways reduced flights to Las Vegas by an additional 40%.