Observations

Dec 2025: 116,358,865

Updated: Apr 1, 2026 9:01 AM CDT

Units:

Thousands,

Seasonally Adjusted

Frequency:

Monthly

Notes

Title	Release Dates

Available Seat Miles for U.S. Air Carrier Domestic and International, Scheduled Passenger Flights	2015-03-12	2026-04-01

Source

U.S. Bureau of Transportation Statistics	2015-03-12	2026-04-01

Release

U.S. Transportation Data	2015-03-12	2021-09-27
Transportation Services Index and Seasonally-Adjusted Transportation Data	2021-09-28	2026-04-01

Units

Thousands	2015-03-12	2026-04-01

Frequency

Monthly	2015-03-12	2026-04-01

Seasonal Adjustment

Seasonally Adjusted	2015-03-12	2026-04-01

Notes

Data from all U.S. air carrier domestic and international, scheduled passenger flights. International data in system total includes U.S. carrier operations to and from the U.S. and from one foreign point to another foreign point. BTS’ Airlines and Airports available here (https://www.transtats.bts.gov/Data_Elements.aspx) does not include U.S. carriers’ foreign point-to-point flights. This data is collected by the U.S. Department of Transportation, Bureau of Transportation Statistics (BTS) calculation from BTS U.S. Air Carrier Traffic Statistics reported in BTS' monthly Air Traffic Data release, available here (https://www.bts.dot.gov/statistical-releases).	2015-03-12	2026-04-01

Available Seat Miles for U.S. Air Carrier Domestic and International, Scheduled Passenger Flights (ASMD11)