| | | | August | September | October | November | December | January | Total | | Weather Delay | | Number of Delays | 34,890 | 30,305 | 13,974 | 11,174 | 17,493 | 42,508 | 150,344 | | % of Total Delayed Operations | 27.16% | 28.94% | 15.03% | 14.64% | 19.62% | 33.63% | 24.33% | | Delayed Minutes | 2,514,828 | 2,248,367 | 872,601 | 653,995 | 1,253,378 | 3,483,415 | 11,026,584 | | % of Total Delayed Minutes | 26.75% | 30.60% | 15.32% | 14.43% | 22.18% | 36.52% | 26.15% | | Non-Weather Delay | | Number of Delays | 93,549 | 74,394 | 79,011 | 65,174 | 71,661 | 83,902 | 467,691 | | % of Total Delayed Operations | 72.84% | 71.06% | 84.97% | 85.36% | 80.38% | 66.37% | 75.67% | | Delayed Minutes | 6,885,376 | 5,099,005 | 4,825,085 | 3,878,330 | 4,397,618 | 6,055,249 | 31,140,663 | | % of Total Delayed Minutes | 73.25% | 69.40% | 84.68% | 85.57% | 77.82% | 63.48% | 73.85% |
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| A flight is considered delayed when it arrived 15 or more minutes than the schedule (see definitions in Frequently Asked Questions). Delayed minutes are calculated for delayed flights only.
Weather delay in this section is the sum of Extreme Weather delays, NAS delays caused by the weather as assigned by the FAA (see National Aviation System Delay by Cause), and the Weather's pro-rata share of late-arriving-aircraft delays based on delay minutes.
No detailed data is available for a specific carreir at a specific airport.
SOURCE: Bureau of Transportation Statistics, Airline Service Quality Performance 234 and Federal Aviation Administration OPSNET | | More Topics: | | Ontime Arrival Performance | | Flight Delays by Cause | | Weather's Share of National Aviation System (NAS) Delays | | National Aviation System (NAS) Delay by Cause | |
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