• In this Sept. 8, 2008, file photo, planes taxi on runways at John F. Kennedy International Airport in New York.  According to an Associated Press analysis, airplanes spent a record 23 minutes and 32 seconds, on average, taxiing between gates and runways during the first nine months of 2015. That’s the highest since the Bureau of Transportation Statistics started tracking taxi times in 1995 and a 50-second increase over last year’s average. (AP Photo/Mark Lennihan, File)

    Stuck waiting: ground delays at US airports on the rise

    NEW YORK (AP) — On a recent morning, Delta Air Lines Flight 435 pushed back early from the gate at New York’s John F. Kennedy International Airport. Passengers watched the safety video and settled in for a six-hour trip.