US airlines had their highest on-time arrival rates (88.3 percent) in eight years in November, according to the U.S. Department of Transportation. The highest rates were earned by Delta Air Lines with 93.7 percent of flights arriving on time, followed by Spirit Airlines with 89.8 percent and Hawaiian Airlines at 89.3 percent. The carriers with the lowest on-time arrival rates were Virgin America (77.5 percent) and Alaska Airlines (83.2 percent), both subsidiaries of Alaska Air Group; and regional carrier SkyWest Airlines (85.4 percent). There were no regularly scheduled flights in November that were chronically delayed – defined as more than 30 minutes late more than 50 percent of the time for two consecutive months or more. While complaints about the treatment of disabled passengers and about discrimination were both down year-over-year in November, general complaints about airline service increased 27.1 percent to 1,299.i