The main trade group representing U.S. airlines said Friday that passenger revenue rose 12.5 percent in April compared with the same month a year earlier.
The Air Transport Association gathers data from its member airlines. Passenger revenue has topped 2009 figures every month this year.
Higher prices are making the difference. About 0.5 percent more passengers traveled on U.S. airlines in April, while the average price to fly one mile rose nearly 14 percent.
Cargo traffic on U.S. airlines rose 22 percent in March -- the latest month for which statistics are available -- from the same month a year ago. Cargo rose 12 percent domestically and 30 percent internationally.
On a daily basis, U.S. airlines operate approximately 25,000 flights in 80 countries, using more than 6,000 aircraft to carry an average of 2 million passengers and 50,000 tons of cargo.
ATA airline members and their affiliates transport more than 90 percent of all U.S. airline passenger and cargo traffic.