US Airways posted a $287 million profit in the second quarter, a 6 percent decline over its second quarter earnings in 2012.
The Tempe-based carrier, which plans to merge with American Airlines' parent company, AMR Corp., said its earnings were hurt by a non-cash provision for income tax of $67 million.
Revenues, however, grew 2.9 percent to a record $3.9 billion as the airline increased capacity by 3.4 percent in the quarter.
"This performance provides excellent momentum as we transition into the new American Airlines," said US Airways chief executive Doug Parker in a statement. "The teams are working very well together and we continue to expect to close the merger in the third quarter."
US Airways executives will discuss the earnings results on a conference call and webcast with investors at 11 a.m. CDT.