Figure 3-5 U.S. Airport Delays by Cause: 2012
Wednesday, August 20, 2014
(percent of delayed time)
| Cause | Percent |
|---|---|
| Aircraft arriving late | 41.4% |
| Air carrier delay | 31.9% |
| NAS delay | 22.5% |
| Extreme weathera | 4.0% |
| Security delay | 0.1% |
a Significant meteorological conditions that delays or prevents the operation of a flight.
Key: NAS = National Aviation System.
Note: Percents do not add to 100 due to rounding.
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Office of Airline Information, available at www.bts.gov as of October 2013.