For the time being, US Airways is the third air carrier operating out of Terminal One. Not for much longer, though: US Air will be moving to Terminal Three later this month. The US Air radio callsign is "Cactus", which was assumed from America West when the two merged in 2005. Once the merger with American is finished, which will probably take another year, the US Air name and Cactus callsign will be retired.
At LAX, US Air operates primarily Airbuses, mostly A319s and A321s, although we do see the occasional A320 and, even more rarely, a B757.
From LAX, US Air flies to its hubs in Charlotte, Philadelphia, and Phoenix.
|A rare sighting at LAX: a pair of US Air B757s|