Release: U.S. Transportation Data
Revenue passenger-miles are a measure of the volume of air passenger transportation. A revenue passenger-mile is equal to one paying passenger carried one mile.
This data is collected by the U.S. Department of Transportation, Bureau of Transportation Statistics (BTS), U.S. Air CarrierTraffic Statistics, http://www.rita.dot.gov/bts/acts
U.S. Bureau of Transportation Statistics, Revenue Passenger Miles for U.S. Air Carrier Domestic and International, Scheduled Passenger Flights [RPM], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/RPM, May 21, 2019.