Aviation · industry standard
ATPCO Fare Filing (Categories and Fare Bases)
ATPCO is the industry utility through which airlines file fares, and its category structure is the de facto standard for expressing what a fare costs and what rules bind it. Categories encode everything from advance purchase and minimum stay to the change and refund rules that determine what a passenger can actually do with a ticket — Category 16 for penalties, Categories 31 and 33 for voluntary changes and refunds.
www.atpco.net/The standard
1965First published
No — fixed-width records, members onlyMachine-readable schema · gated
0providers in the catalog
Also known as ATPCO, Airline Tariff Publishing Company, Cat 16, Cat 31, Cat 33, Fare Basis.
Providers that carry ATPCO Fare Filing 0
No provider in the catalog carries this standard as a tag yet. That is a statement about the catalog's tagging, not about adoption: a provider that implements ATPCO Fare Filing and says so in its APIs.json profile appears here on the next build. Add or correct a listing.
Read from the API Evangelist standards directory, facts verified 2026-08-17. Provider links come from the catalog's own identity tags and are rebuilt nightly. If this page is wrong about a standard or a provider, say so.