March was generally a good month for U.S. airlines, though growth rates in some cases showed signs of slowing. AirTran Airways said March traffic rose 5.5% on 6.8% capacity growth. Traffic at Alaska Airlines jumped 19.3%, outpacing capacity increases by 4 percentage points. American Airlines and Delta Air Lines reported fractional traffic increases of 0.8% and 0.5%, respectively. In both cases, capacity rose faster than traffic, so planes were less full in March. At US Airways, a 3.9% increase in mainline traffic was nearly matched by a 3.6% rise in capacity, and load factor inched up fractionally to 83.4%.
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