American Airlines said its passenger traffic in August declined 2.8 percent as the carrier added 1.4 percent more capacity to its network.
As a result, planes were not as full with its passenger load factor decreasing 3.6 percentage points to 82.9 percent.
The Fort Worth-based carrier told investors that it expects unit revenues to be down 3 to 5 percent for the third quarter.
Sign Up and Save
Get six months of free digital access to the Star-Telegram