His wife and toddler, got stuck trying to get to tampa. >> delayed another hour. delayed another hour. and now today, the same thing is happening again. >> reporter: this summer, nearly a quarter of flights by u.s. airlines have been delayed on average by almost an hour. >> we are still seeing far, foor too many delays and cancellations. >> reporter: do airlines need to be held to a higher standard? >> i think so. >> reporter: pete buttigieg sent a thrort airlines last week calling their performance "unacceptable." airlines say they've thinned their schedule and increased hiring trying to keep...