Southwest Airlines said its passenger traffic rose 8.6 percent in the busy holiday travel month of December.
The Dallas-based carrier also grew its capacity by 8.3 percent while its load factor increased 0.3 percentage points to 83.0 percent when compared to December 2014.
The airline also reiterated to Wall Street investors that its fourth quarter estimate that unit revenues will be flat to down 1.0 percent.
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