U.S. airlines carried 77.5 million domestic and international scheduled service passengers in September 2024.
According to the Bureau of Transportation Statistics, when adjusted for seasonality, September enplanements were up 1.6% from a year ago. However, they are down 0.4% from August and down 1.7% from the all-time high reached in June 2024.
BTS reported 68 million domestic passengers and 9.5 million international passengers on U.S. airline flights in September, not adjusting for seasonality. U.S. airline traffic reports are filed monthly with BTS.