|Percentage of all delayed flights by length of time delayed|
|Total number of arriving flights||Percentage of arriving flights, delayed||Average length of delay (minutes)||15-29 minutes||30-59 minutes||60-89 minutes||90-119 minutes||More than 120 minutes|
NOTES: For the monthly number of carriers reporting, please refer to the Air Travel Consumer Reports available at http://airconsumer.dot.gov/reports/index.htm. A flight is considered delayed when it arrived 15 or more minutes later than scheduled. Arriving flights consists of scheduled operations less canceled and diverted flights. Average minutes are calculated for delayed flights only. Percents may not add to 100 due to rounding.
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Transtats Database, Airline, On-Time Performance, available at http://www.transtats.bts.gov/ as of June 2013.