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Airline On-Time Performance and Causes of Flight Delays

Dataset Summary

Agency	Department of Transportation
Sub-Agency	Bureau of Transportation Statistics
Category	Transportation
Date Released	10/1/1987
Date Updated	5/12/2009
Time Period	October 1987 onward
Frequency	monthly
Description	This table contains on-time arrival data for non-stop domestic flights by major air carriers, and provides such additional items as departure and arrival delays, origin and destination airports, flight numbers, scheduled and actual departure and arrival times, cancelled or diverted flights, taxi-out and taxi-in times, air time, and non-stop distance.

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Dataset Metrics

Number of Downloads

2,759

Dataset Information

Data.gov Data Category Type	Tool Catalog
Specialized Data Category Designation	Statistical
Keywords	monthly on-time performance data, airlines, domestic air travel, delays
Unique ID	23

Contributing Agency Information

Citation	Airline On-time Performance and Causes of Flight Delays - Download Monthly On-Time Data, Bureau of Transportation Statistics, Research and Innovative Technology Administration, United States Department of Transportation
Agency Program Page	http://www.bts.gov/programs/airline_information/
Agency Data Series Page	http://www.transtats.bts.gov/Tables.asp?DB_ID=120&DB_Name=Airline%20On-Time%20Performance%20Data&DB_Short_Name=On-Time

Dataset Coverage

Unit of Analysis	Airline flights classified by scheduled vs actual date/time of departure/arrival, aircraft identifier, airline, origin, destination, causes of delays/cancellations/diversions
Granularity	Airport
Geographic Coverage	United States

Data Description

Collection Mode	Reporting Carriers are required under 14 CFR 234 to report on-time performance data directly to BTS. See Accounting and Reporting directive 17.
Data Collection Instrument	http://www.bts.gov/programs/airline_information/accounting_and_reporting_directives/technical_directive_17.html
Data Dictionary/Variable List	http://www.transtats.bts.gov/TableInfo.asp?Table_ID=236&DB_Short_Name=On-Time&Info_Only=0

Additional Dataset Documentation

Technical Documentation	http://www.bts.gov/help/aviation/ https://ntl.custhelp.com/cgi-bin/ntl.cfg/php/enduser/std_adp.php?p_faqid=402&p_created=1209668260
Additional Metadata

Statistical Information

Statistical Methodology	A complete enumeration of flights by reporting carriers.
Sampling	http://www.bts.gov/help/aviation/#q1
Estimation	Not Applicable
Weighting	Not Applicable
Disclosure avoidance	Not Applicable
Questionnaire design
Series breaks	Not Applicable
Non-response adjustment	Not Applicable
Seasonal adjustment	Not Applicable
Statistical Characteristics

OMB Control No. 3090-0284