Delta Air Lines was the most punctual major U.S. carrier in February

, posting an on-time performance of 76.8 percent, according to the latest government statistics. American Airlines ranked last among majors at 61.7 percent. Overall, U.S. airlines managed to operate 68.6 percent of their February flights on time, better than February 2007 but noticeably worse than the January 2008 rate of 72.4 percent.