U.S. airlines carried 85.2 million systemwide (domestic and international) scheduled service passengers in May 2025, according to the Bureau of Transportation Statistics (BTS). When adjusted for seasonality, May enplanements are up 0.5% from April and down 3.5% from the all-time high reached in June 2024.
BTS reported 74.2 million domestic passengers and 11 million international passengers on U.S. airlines flights in May, not adjusting for seasonality.
Trends (not seasonally adjusted) in U.S. airlines passenger enplanements
May unadjusted
- Systemwide enplanements (85.2M) were down 2.1% from the all-time May high (87.1) reached in 2024.
- Domestic enplanements (74.2M) were down 2.2% from the all-time May high (75.8) reached in 2024.
- International enplanements (11.03M) were down 2% from the all-time May high (11.26) reached in 2024.
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Table A. Unadjusted Passenger Enplanements Compared to Previous Time Periods
| Percent Change Compared to | ||||
| Unadjusted | Passengers (in millions) |
Previous Year |
Two Years Previous |
Three Years Previous |
| May | 85.2 | -2.1% | 4.2% | 12.5% |
Seasonally adjusted trends in U.S. airlines passenger enplanements
May seasonally adjusted
- Systemwide enplanements (80.2M) were down 3.5% from the all-time high of 83.1 million reached in June 2024.
- Domestic enplanements (69.7M) were down 3.7% from the all-time high of 72.3 million reached in June 2024.
- International enplanements (10.52M) were down 6.4% from the all-time high of 11.25 million reached in December 2024.
Table B. Seasonally Adjusted Passenger Enplanements Compared to Previous Time Periods
| Percent Change Compared to | ||||
| Seasonally Adjusted |
Passengers (in millions) |
Previous Month |
Previous Year |
Three Years Previous |
| May | 80.2 | 0.5% | -1.0% | 12.6% |