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Table 4-2 Percentage of All Delayed Flights by Length of Time Delayed: 2004-2015

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  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
2004 7,129,270 19.9 51 42.3 31.3 12.3 6.1 7.8
2005 7,140,596 20.5 52 41.8 31.1 12.4 6.2 8.1
2006 7,141,922 22.6 54 40.3 31.2 12.8 6.5 8.9
2007 7,455,458 24.1 56 39.1 31.0 13.1 6.9 9.7
2008 7,009,726 21.7 57 39.1 30.5 13.0 6.9 10.2
2009 6,450,285 18.8 54 40.7 30.7 12.7 6.6 9.0
2010 6,450,117 18.2 54 41.2 30.7 12.5 6.5 8.9
2011 6,085,281 18.2 56 40.4 30.1 12.8 6.8 9.7
2012 6,096,762 16.6 56 40.6 30.1 12.6 6.7 9.8
2013 6,369,482 19.9 56 39.7 30.4 12.7 6.8 10.1
2014 5,819,811 21.3 57 39.2 31.3 12.8 6.6 9.9
2015 5,819,079 18.3 59 38.8 30.6 12.8 6.9 10.9

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 at the gate 15 or more minutes later than scheduled. Arriving flights consists of scheduled operations less canceled and diverted flights. Average length of delay is calculated for delayed flights only. Percents may not add to 100 due to rounding.

SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Transtats Database, Airline On-Time Performance, available at http://www.transtats.bts.gov/ as of May 2016.

Updated: Saturday, May 20, 2017