Increase in passenger traffic reported by US Airways June 4, 2010 U.S. Airways Group Inc. reported an 1.8 percent year-over-year increase in traffic last month and passenger traffic was up close to 1 percent. U.S. Airways Group Inc. reported an 1.8 percent year-over-year increase in traffic last month and passenger traffic was up close to 1 percent. Almost 4.46 million passengers were on US Airways flights during May, a 0.9 percent increase compared to 4.42 million in May 2009, the airline said Thursday. The airline, one of six carriers at Piedmont Triad International Airport, flew 5.2 billion revenue passenger miles last month, up 1.8 percent from May 2009. Revenue passenger miles are a key airline industry gauge of a carrier’s traffic.