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Airlines and Airports
Airline On-Time Statistics and Delay Causes
Delay Cause Definition  Understanding Delay Data   Database Tables  Flight Delays at a Glance
(Select 6-18 individual months)
Weather's Share of National Aviation System (NAS) Delays
National (January - June, 2023)
Most Recent Month      Year to DateView Tabular Version  
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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.

SOURCE: Federal Aviation Administration OPSNET