U.S. Air Transportation System: 2010 2018-2023

This graph is from the 2024 Transportation Statistics Annual Report.

Percent of Flight Delay by Delay Cause: 2010-2023

This graph is from the 2024 Transportation Statistics Annual Report.

Percent On-Time Flight Departures and Arrivals

Enplanements at Top 50 U.S. Airports: 2023

This map is from the 2024 Transportation Statistics Annual Report.

BTS Updates Datasets to National Transportation Atlas Database, Winter 2025

Number 39: Technical Directive Reporting On Time Performance 2025

DEPARTMENT OF TRANSPORTATION     BUREAU OF TRANSPORTATION STATISTICS OFFICE OF AIRLINE INFORMATION

TITLE 14 CODE OF FEDERAL REGULATIONS PARTS 234  TECHNICAL REPORTING DIRECTIVE #39 – ON-TIME PERFORMANCE

Accounting and Reporting Directives

The Bureau of Transportation Statistics (BTS) Office of Airline Information issues periodic Accounting and Reporting Directives (A&RD) and industry letters that serve the reporting air carriers by providing clarity to the regulations. A&RD provides more specific instructions and details (e.g. aircraft type codes) about the regulations because the information was too technical or lengthy to be included due to page limitations.

Preliminary Estimates for Enplanements from TSA Checkpoint Inspections Using Correlational Models and Linear Regression

• DOI link
• Text
• Preliminary Estimates page

Abstract

Preliminary Estimates

The Bureau of Transportation Statistics (BTS) developed a model that allows for the forecast of the preliminary estimates for enplanements. The model develops an analysis and obtains a sense of the appropriateness of simpler linear regression, correlations were calculated between the national TSA inspection checks and the full, domestic, and international T100 market data.

BTS Updates Datasets to National Transportation Atlas Database, Fall 2024