11.   But it warned that computer failures in baggage handling and other areas could trigger flight delays that could ripple through the entire air travel system.

12.   But Logan is far from alone in having something as minor as a pulled plug lead to mass evacuations and flight delays.

13.   But snowfall rarely brings school closings and flight delays.

14.   But this particular flight was not among those affected, and even disregarding strikes, clogged skies sharply increased flight delays this year.

15.   But, airline officials say, the policies will better inform Hartsfield International Airport passengers about flight delays and why they are happening.

16.   Capitano said that the lack of runways is not the only cause of flight delays.

17.   Delta, which has problems with flight delays, needs a strict carry-on rule to speed up boarding.

18.   Ed Merlis, senior vice president of the Air Transport Association, an airline industry trade group, said the solution to flight delays is more runways.

19.   Flight delays and missed connections led the list, which also included complaints about passenger service and mishandled baggage, according to the Department of Transportation.

20.   Flight delays were down in the first five months of this year, according to the U.S. Bureau of Transportation Statistics, an agency of the Transportation Department.