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

Observations

Apr 2026: 116,784,374
Updated: Aug 3, 2026 9:02 AM CDT
Apr 2026:  116,784,374  
Mar 2026:  119,411,465  
Feb 2026:  99,472,172  
Jan 2026:  105,735,676  
Dec 2025:  117,543,298  

Units:

Thousands,
Not Seasonally Adjusted

Frequency:

Monthly

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Notes

Title Release Dates
Available Seat Miles for U.S. Air Carrier Domestic and International, Scheduled Passenger Flights 2015-03-12 2017-12-13
Available Seat Miles for U.S. Air Carrier Domestic and International, Scheduled Passenger Flights (DISCONTINUED) 2017-12-14 2018-09-24
Available Seat Miles for U.S. Air Carrier Domestic and International, Scheduled Passenger Flights 2018-09-25 2026-08-03
 
Source    
U.S. Bureau of Transportation Statistics 2015-03-12 2026-08-03
 
Release    
U.S. Transportation Data 2015-03-12 2021-09-27
Transportation Services Index and Seasonally-Adjusted Transportation Data 2021-09-28 2026-08-03
 
Units    
Thousands 2015-03-12 2026-08-03
 
Frequency    
Monthly 2015-03-12 2026-08-03
 
Seasonal Adjustment    
Not Seasonally Adjusted 2015-03-12 2026-08-03
 
Notes    
Available seat-miles are a measure of the capacity of air passenger transportation. An available seat-mile is equal to one aircraft seat carried one mile.

This data is collected by the U.S. Department of Transportation, Bureau of Transportation Statistics (BTS), U.S. Air CarrierTraffic Statistics, http://www.rita.dot.gov/bts/acts

2015-03-12 2018-09-24
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), U.S. Air Carrier Traffic Statistics reported in BTS' monthly Air Traffic Data release, available here (https://www.bts.dot.gov/statistical-releases).

2018-09-25 2026-08-03

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Flight Miles Passenger Air Travel Bureau of Transportation Statistics Travel Domestic Monthly Nation Public Domain: Citation Requested United States of America Not Seasonally Adjusted