Airlines’ on-time data incomplete, report says

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Travelers on Monday experienced a new round of cancellations and delays as another winter storm grounded planes yet again. But many of those flights won’t be counted as late or canceled in the government’s on-time statistics.

A recent federal report said passengers are getting only part of the picture, and that the industry’s on-time performance is actually much lower than billed. And a proposal to require carriers to provide a more accurate picture has yet to be adopted more than two years after it was proposed.

On-time statistics capture only 76 percent of domestic flights at US commercial airports, according to a December report by the Transportation Department’s inspector general.

The proposed rule would increase the number of carriers required to report data about delays and cancellations.

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