Ask a Librarian & FAQs

Certificated air carriers are required under 14 CFR 234 and 14 CFR 241 to report statistics to the Bureau of Transportation Statistics (BTS) at the US Department of Transportation (DOT). 

• Data may be reported monthly, quarterly or semiannually, depending on the database.

• Data includes traffic, financial, and on-time performance.

• TranStats airline databases

• Detailed instructions on how to access BTS Airline On-Time Statistics

• What is the difference between T-100 Market and T-100 Segment Airline Traffic Data?

• How do I download large files from TranStats?

• What are the carrier regions in airline data?

Other DOT Sources:

• Air Travel Consumer Report: Monthly and 12-month totals for flight delays, mishandled baggage, oversales, consumer complaints, customer service reports, and airline reports of animal loss, injury, and death

• FAA Administrator's Fact Book: Overview of traffic, financial, infrastructure data

• FAA Aerospace Forecasts

• FAA Air Traffic Activity Data System: Airport take-offs and landings, both local and itinerant, including general aviation and air taxis, military flights, by day/month/year

• FAA General Aviation and Part 135 Activity Surveys: Traffic, conditions and equipment