AVAILABILITY AND USE OF INTERNATIONAL FLIGHTS BY U.S. AIR CARRIERS: AIR PASSENGERS

AVAILABILITY AND USE OF INTERNATIONAL FLIGHTS BY U.S. AIR CARRIERS: AIR PASSENGERS

International Air Seat and Passenger Miles (monthly data, not seasonally adjusted)

Excel | CSV

International Air Seat and Passenger Miles (monthly data, not seasonally adjusted). If you are a user with a disability and cannot view this image, please call 800-853-1351 or email answers@bts.gov for further assistance.

Revenue passenger-miles are a measure of the volume of air passenger transportation. Unused seat-miles (the difference between available seat-miles and revenue passenger miles) are used as a measure of airline capacity utilization. Another measure is the intensity of use of the equipment.

NOTE: A revenue passenger-mile is equal to one paying passenger carried one mile. Available seat-miles for an individual flight are the number of seats multiplied by the distance traveled. The data include international flights by U.S. carriers, but do not include flights by foreign carriers.

International Passenger Aviation Apr-01 Apr-02
Available seat-miles (billions) 22.00  18.28
Available seat-miles percent change from same month previous year  6.02 -16.91
Revenue passenger-miles (billions) 16.09  13.48
Revenue passenger-miles percent change from same month previous year  2.35 -16.22
Unused seat-miles (billions)  5.91   4.80
Unused seat-miles percent change from same month previous year 17.50 -18.78

NOTES: The current value is compared to the value from the same period in the previous year to account for seasonality. The data have been adjusted to have a standard 30-day month by multiplying the data for each month by the ratio: 30/(actual days in month).

These indicators are components of the passenger and overall aircraft load factors displayed in "Aircraft Utilization-Passengers and Freight."

The data include both transborder and foreign flights by U.S. carriers, but do not include any flights by foreign carriers.

The dramatic changes in the September 2001 data reflect the impact of the terrorist attacks on Sept. 11, 2001, on aviation, including several days in which commercial air operations were suspended.

Alaskan carriers that began reporting T100 data in January 2002 are excluded from this report to retain comparability for comparisons with the previous year.

SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Air Carrier Traffic Statistics Monthly, July 2002.