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| Aircraft Arriving Late: Causes of the Original Delay |
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Most Recent Month
Year To Date
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Note: Data are available from June 2003 through May 2023.
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| | Number of Operations | Delayed Minutes | % of Total Delayed
Minutes |
| Air Carrier Delay | | 29,255 | 2,103,425 | 57.43% |
| Security Delay | | 171 | 12,322 | 0.34% |
| Weather | 9,326 | 670,516 | 18.31% |
| Volume | 6,572 | 472,518 | 12.90% |
| National Aviation System Delay | Equipment | 97 | 6,962 | 0.19% |
| Closed Runway | 1,012 | 72,756 | 1.99% |
| Other | 432 | 31,049 | 0.85% |
| Extreme Weather Delay | | 4,078 | 293,215 | 8.01% |
| Total Aircraft Arriving Late | | 50,943 | 3,662,763 | 100.00% |
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Note: Airlines report late-arriving aircraft as a category of the cause of delay when a previous flight with same aircraft arrived late, causing the present flight to depart late. Airlines do not report the cause of delay for the first late flight that caused the second delay. Using data reported by the airlines for other categories of delay causes, the page displays calculations of the causes of delay for the late arriving aircraft category. These calculations use the percentages of delay minutes reported by the airlines in the air carrier, national aviation system, security and weather categories and assign them proportionately to the late arriving aircraft category. The displayed numbers are rounded and may not add up to the total.
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SOURCE: Bureau of Transportation Statistics, Airline Service Quality Performance 234 and Federal Aviation Administration OPSNET.
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