Canceled flights were up 149 percent compared to February 2013. American said for the first two months of 2014, it canceled about 28,000 flights which is a 164 percent increase over January and February of 2013.
"The company believes the weather-related cancellations had a slightly positive impact on unit revenue but had a larger negative impact on unit cost and first quarter profitability," American said in its monthly traffic report.
American said passenger traffic rose slightly, up 0.5 percent in February as the carrier increased capacity 0.8 percent in the month.
Its load factor dropped 0.3 percentage points to 78.4 percent.
The carrier said it expects unit revenues to be up 2 to 4 percent in the first quarter of 2014 and will disclose its weather impact on profitability in early April.