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December 2010-January-February 2011 Regularly Scheduled Flights with More than 50% Delayed Arrivals of More than 30 Minutes

CarrierFlight NumberMonthOrigin-DestScheduled Departure TimeTotal Operations (minimum of 10 per month)*Number Not On-Time*Percent Not On-Time*Average Minutes of Delay (30 min late flights only)**
Southwest1240DecMDW-PIT1935251352.0087
Southwest32JanMDW-PIT1915231460.8759
Southwest32FebMDW-PIT191511872.7370
Notes: 

* Includes canceled and diverted flights

** For flights late more than 30 minutes only.  Excludes canceled and diverted flights

Source: 

Bureau of Transportation Statistics, Airline On-Time Data

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