TABLE 5-9 Air Travel Time Index (ATTI), Air Travel Time Variability Index (ATTVI), and Operated Flights: 1990-2004

TABLE 5-9 Air Travel Time Index (ATTI), Air Travel Time Variability Index (ATTVI), and Operated Flights: 1990-2004

Yearly averages
Index: 1990 = 100.0

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  1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
ATTI 100.0 98.8 98.2 98.5 98.4 99.4 101.3 100.3 101.3 102.3 105.0 101.8 99.4 99.0 101.9
ATTVI 100.0 93.5 87.5 93.2 94.9 107.4 124.2 116.9 127.1 134.2 148.7 129.3 115.4 113.2 129.9
Operated flights 100.0 97.7 100.8 103.2 108.3 116.6 119.4 118.9 119.2 125.3 128.6 126.3 122.9 135.1 148.9

NOTES: ATTVI measures the variability of times of nonstop flights based on differences between travel times on individual flights and the average travel times for the same flight. The number of operations is based on data for large certificated carriers.

SOURCES: U.S. Department of Transportation (USDOT), Research and Innovative Technology Administration, Bureau of Transportation Statistics (BTS), calculations using the following: ATTI and Variability—USDOT, BTS, Airline Service Quality Performance data, May 2005. Operated flights—USDOT, BTS, Airline Market and Segment (T-100) data, May 2005.