The AP reports: Spirit performed poorly at nearly all airports it serves but was worst in Philadelphia, Chicago's O'Hare Airport and Detroit, where on-time percentages were in the 30s ... On six routes, the Spirit delays averaged more than two hours.
United Airlines comes in second-worst, with a significantly higher 66.3% on-time rate.
Also interesting from this study: Spirit Airlines had by far the highest complaint rate of the 14 airlines covered in the report. Spirit passengers were 43 times more likely to file a complaint than passengers on Alaska Airlines, which had the lowest complaint rate.
And then there's this: the overall rate of complaints against airlines jumped 45 percent from June 2014, but Spirit alone was responsible for more than half the increase.
Thanks to AP for getting this story out! Read more here.