Republic Airways traffic was down 5% to 1.6 billion revenue passenger miles in September compared to a year earlier.
Capacity was also down by 7% to 2 billion available seat miles during the period.
The regional carrier carried 2.5 million passengers in September, down 5% from 2011. It generated 72,391 block hours, which was also a 5% decrease from the same time a year earlier.
The consolidated load factor was down two percentage points to 82% from 2011.