Thousands of flights
|Late departures||Late arrivals||Cancellations||Diversions||On-time flight arrivals (%)||Total operations|
NOTES: Late departures are flights departing 15 minutes or more after the scheduled departure time. Late arrivals are flights arriving 15 minutes or more after the scheduled arrival time. Late departures and arrivals are strongly seasonal and are affected by weather in winter and summer months and by heavy demand in summer. Cancellations are flights that were not operated, but were listed in a carrier's computer reservation system within seven calendar days of the scheduled departure. Diversions are flights that left from the scheduled departure airport, but flew to a non-destination point. Diverted flights may or may not ultimately reach their scheduled destination.
In 2006 and 2007, 20 air carriers reported on-time performance data, including all major U.S. passenger carriers (carriers with at least one percent of total domestic scheduled-service passenger revenues) and other carriers that reported voluntarily. The number of carriers reporting in previous years is as follows: 2005 (20); 2004 (19); 2003 (18); 2002 (10); 2001 (12); 2000 (11); 1999 (10); 1998 (10); 1997 (10); 1996 (10); and 1995 (10).
SOURCES: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Airline On-Time Tables, Table 1 - Summary of Airline On-Time Performance Year-to-date through December 2007, available at http://www.bts.gov/programs/airline_information/airline_ontime_tables as reported in U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, table 1-62, available at http://www.bts.gov/publications/national_transportation_statistics/ as of October 2008.