Monthly data, not seasonally adjusted
Load Factor (monthly data, not seasonally adjusted)
Airline revenue passenger-miles (RPM) are a measure of intensity of use of the air travel system. In 2008, the 740 million passengers traveling on U.S.-based airlines collectively traveled 806 billion miles. On average, a passenger traveling domestically traveled 872 miles. An international passenger traveling on a U.S.-based airline traveled an average of 2,674 miles to the first destination outside the U.S.
In 2008, airlines operating in the United States had 79.5 percent of their available seat-miles (ASM) occupied by passengers. Capacity utilization for domestic carriers was very similar for domestic and international segments, with 79.8 percent of ASM occupied for domestic flights, and 79.0 percent of ASM occupied for international flights. Foreign airlines that originated flights in the U.S. had a load factor of 76.0 percent.
|U.S. Airline Revenue Passenger-Miles and Load Factor||May-09||May-10|
|Scheduled System (Domestic and International) U.S. Airlines Total RPM (billions)||64.52||67.49|
|Percent change from same month previous year||-9.42||4.60|
|Scheduled System (Domestic and International) U.S. Airlines' Load Factor (percent)||79.75||82.34|
|Difference from same month previous year*||-1.17||2.59|
* Current month minus same month previous year. This is generally used in the case of bound numbers, such as proportions that cannot exceed 100%.
NOTE: The current value is compared to the value from the same period in the previous year to account for seasonality.
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Office of Airline Information, available at http://www.bts.gov/programs/airline_information/ as of August 2010.