Planes were not as full for American Airlines in April.
The Fort Worth-based carrier said its passenger traffic declined slightly, down 0.2 percent in the month while American grew its capacity 1.3 percent.
American said its load factor dropped 1.2 percentage points to 80.4 percent.
The carrier also reiterated its previous guidance to investors that its unit revenues for the second quarter will be down about six to 8 percent when compared to the second quarter of 2015.
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