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U.S. Department of TransportationU.S. Department of Transportation IconUnited States Department of TransportationUnited States Department of Transportation
BTS> TranStats
Airlines and Airports
Airline On-Time Statistics and Delay Causes
Delay Cause Definition  Understanding Delay Data   Database Tables  Flight Delays at a Glance
Note: The numbers are for the marketing, reporting operating, and codeshare carriers from January 2018.
Show all reporting carriersShow all airports (by state)
Causes of National Aviation System Delays
National (July, 2024)
Most Recent Month      Year to DateView Individual Months  View Tabular Version  
More Topics:

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.

SOURCE: Federal Aviation Administration OPSNET