"A few patterns become obvious. First, US Airways, along with subsidiaries Piedmont and PSA, dominate the category for punctual winter holiday travel. In recent years the airline has focused on having its planes depart exactly as scheduled. "We're focusing on this because on-time departures give you a better chance of an on-time arrival," says US Airways spokeswoman Michelle Mohr."
http://www.forbes.com/2010/12/14/hawaiian-delta-united-business-logistics-airlines-holiday-travel.html
http://www.forbes.com/2010/12/14/hawaiian-delta-united-business-logistics-airlines-holiday-travel.html