MAJOR U.S. AIR CARRIER ON-TIME PERFORMANCE
Major U.S. Air Carrier On-Time Performance (monthly data, not seasonally adjusted)
The number of flights not departing or arriving on time, cancellations, and diversions
are measures of service quality.
These indicators are strongly seasonal and are affected by weather and heavy demand in
winter and summer months, respectively.
| 482,942 |
482,819 |
| 3.58 |
-0.03 |
| 23.01 |
24.04 |
| 1.10 |
1.03 |
| 19.27 |
20.98 |
| 0.64 |
1.71 |
| 2.12 |
3.08 |
| -0.54 |
0.96 |
| 0.21 |
0.18 |
| -0.01 |
-0.03 |
* Also counted in flights not arriving or departing on time.
** Also counted in flights not arriving on time.
NOTES: The current value is compared to the value from the same period in the
previous year to account for seasonality.
The data cover the 10 largest U.S. air carriers. A scheduled operation consists
of any nonstop segment of a flight. The term "late" is defined as 15 minutes after
the scheduled departure or arrival time. A cancelled flight is one that was not
operated but was listed in a carrier’s computer reservation system within seven
calendar days of the scheduled departure. A diverted flight is one that left from the
scheduled departure airport but flew to a destination point other than the scheduled
destination point.
Data for Aloha Airlines, available beginning in October 2000, and
for American Eagle, available beginning in March 2001, will be excluded here until one
year's data is available to retain comparability with previous years.
SOURCE: U.S. Department of Transportation, Bureau of
Transportation Statistics, Airline Service Quality Performance data.
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