The U.S. airline industry reported strong results for the second quarter, in part because more carriers are focused on serving routes that generate revenue and charging for optional service offerings. "Those are things that are new, that didn't exist five years ago," said Jonathan Kletzel, national airlines leader for PwC, referring to ancillary services. "And those are going to help contribute to the health of the industry." He also said, "It's definitely healthier than it has been."
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