According to information filed with thye Bureau of Transportation Statistics (BTS), the 11 carriers reporting on-time data posted a 76.6 percent on-time record in January, better than both December's rate of 62.8 percent and January 2000's 73.7.

Aloha Airlines had the best on-time arrival rate in January at 93.9 percent, followed by Northwest Airlines at 81.0 and Continental Airlines at 80.6.

Alaska Airlines had the lowest percentage of on-time flights at 66.2, with America West Airlines ranked tenth at 68.5 and Delta Air Lines ninth at 73.1.

The report contains a list of regularly scheduled flights that were late at least 80 percent of the time. In January, only one flight fit this category: Alaska flight 720 from Seattle to Phoenix, which was late 83.87 percent of the time.
http://news.airwise.com/stories/2001/03/984086397.html