BTS: 2013 US airline passenger numbers reach five-year high
For the full-year, Delta Air Lines (for the fourth consecutive year) carried the most passengers systemwide (120.4 million, up 3.4% from 2012), followed by Southwest Airlines (115.3 million passengers, up 2.8% from 2012) and United Airlines (90.1 million, down 2.4% from 2012).
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http://atwonline.com/airlines/bts-20...five-year-high