Observations

Apr 2026: 83,173,786

Updated: Aug 3, 2026 9:02 AM CDT

Units:

Thousands,

Not Seasonally Adjusted

Frequency:

Monthly

Notes

Title	Release Dates

Domestic Available Seat Miles (ASMs), Scheduled Passenger Flights	2016-04-14	2017-11-15
Domestic Available Seat Miles (ASMs), Scheduled Passenger Flights (DISCONTINUED)	2017-11-16	2018-09-24
Domestic Available Seat Miles (ASMs), Scheduled Passenger Flights	2018-09-25	2026-08-03

Source

U.S. Bureau of Transportation Statistics	2016-04-14	2026-08-03

Release

U.S. Transportation Data	2016-04-14	2021-09-27
Transportation Services Index and Seasonally-Adjusted Transportation Data	2021-09-28	2026-08-03

Units

Thousands	2016-04-14	2026-08-03

Frequency

Monthly	2016-04-14	2026-08-03

Seasonal Adjustment

Not Seasonally Adjusted	2016-04-14	2026-08-03

Domestic Available Seat Miles (ASMs), Scheduled Passenger Flights (ASMD)