Airline distribution Travel technology glossary

ATPCOAirline Tariff Publishing Company

Also called Airline Tariff Publishing CompanyATP

Definition

ATPCO (Airline Tariff Publishing Company) is an airline-owned company that collects fares, fare rules and related pricing data from airlines and distributes it to GDSs, online travel agencies and other pricing systems. It is the central clearing point for most of the world's published airfares.

What ATPCO means

ATPCO grew out of the paperwork of regulated air travel. In 1945 the Air Traffic Conference of America set up a tariff department to file US domestic fares with the government. In 1965 it became Airline Tariff Publishers, Inc., and the company took the ATPCO name in 1975. Its main office moved to the Washington Dulles area in 1985, and its headquarters is in Herndon, Virginia.

ATPCO is owned by airlines, and its board includes carriers such as Delta, American, United, Lufthansa, ANA, Air Canada, KLM, LATAM, British Airways and Air France (as of 2026). It does not set prices. Airlines decide their fares and rules, and ATPCO validates, stores and distributes that data in a standard format so that every subscribing system prices tickets the same way.

As of 2026, ATPCO reports that it serves 457 airlines and 118 channels across 148 countries, with more than 357 million fares in its database and 17.6 million fare and rule changes a day. Beyond fares, it distributes data for branded fares, optional services and taxes, owns the Routehappy rich-content product and offers NDC and dynamic offer tools.

In January 2021 ATPCO bought SITA's Airfare Insight fare management system, folding the other long-standing fare filing route into its Architect pricing tool. For the filing process itself, see fare filing.

How ATPCO works

ATPCO sits between airline pricing teams and the systems that shop and price tickets.

  1. Airline prepares pricing dataPricing analysts build fares, rules, footnotes and routings, often in ATPCO tools such as FareManager or Architect.
  2. Data is submitted to ATPCOThe airline files its changes, which can range from a single market to thousands of fares in a sale.
  3. ATPCO validates and processesThe data is checked for structure and consistency and stored with its effective and discontinue dates.
  4. Subscribers receive updatesGDSs, online travel agencies, airline systems and other subscribers receive the processed data under their subscriptions.
  5. Pricing engines apply the dataWhen an agent or traveller shops, the pricing engine combines ATPCO fares and rules with live availability to produce a price.

ATPCO in practice

SITA migration: when ATPCO took over SITA's Airfare Insight in January 2021, users including Singapore Airlines, Emirates, Virgin Atlantic and Xiamen Air agreed to move. SITA continued to operate the system through 2021 while customers transferred to ATPCO's Architect tool.

Fare sale (illustrative): an airline launches a seven-day sale between Dhaka and Kuala Lumpur. Its pricing team files lower fares with a sales date footnote. Once ATPCO distributes the update, GDS agents and OTAs price the new fares automatically, and when the footnote expires the fares stop selling.

History: in September 2022 ATPCO donated more than 1,500 volumes of historic tariff, rule and routing books, dating back to 1943, to the US Library of Congress.

Who uses it

AirlinesPricing and revenue teams file and manage fares, rules, branded fares and optional services through ATPCO.
GDSs and OTAsDistribution systems subscribe to ATPCO data so their pricing engines can calculate fares and rules correctly.
Travel agencies and TMCsAgents rely on ATPCO-filed fares, rules and fare basis codes when they price, ticket, reissue and refund tickets.
AnalystsAirline and industry analysts use ATPCO fare data to monitor competitor pricing in specific markets.

Advantages and limitations

Advantages

  • A single standard for fare data means a fare prices the same way across all subscribing GDSs and websites.
  • Airlines can change fares in many markets quickly without contacting each distribution system separately.
  • Its airline ownership keeps the data standard aligned with carriers' commercial needs.

Limitations

  • The filed-fare model was built for static price points, which is less suited to fully dynamic, personalised offers.
  • Fares that are not filed with ATPCO, such as many low-cost carrier fares and some NDC-only offers, will not appear in traditional pricing.
  • The rule structure is complex, so coding mistakes can lead to wrongly priced tickets and agency debit memos.

Frequently asked questions about ATPCO

Who owns ATPCO?

ATPCO is owned by airlines. Its board of directors is made up of airline representatives, including Delta, American, United, Lufthansa, ANA, Air Canada, KLM, LATAM, British Airways and Air France as of 2026. It operates as a separate company from IATA, although the two work on related industry standards.

Does ATPCO decide airfare prices?

No. Each airline sets its own fares, rules and conditions. ATPCO's job is to collect that data, check it is correctly structured and distribute it to the systems that sell tickets, so that a fare filed by the airline prices consistently wherever it is sold.

What happened to SITA's fare filing system?

ATPCO acquired SITA's fare management system, Airfare Insight, with the deal closing on 1 January 2021. SITA kept operating the system during 2021 and supported it until 1 January 2022, while airline customers moved to ATPCO's Architect pricing tool on agreed timelines.

Is ATPCO involved in NDC?

Yes. Alongside its traditional fare distribution, ATPCO lists NDC and API services among its products and offers tools for dynamic offers, branded fares and Routehappy rich content. These help airlines describe and price offers that can be sold through NDC as well as through traditional channels.

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Sources and further reading

  1. ATPCO — About
  2. ATPCO — On the radar: ATPCO's role in commercial aviation history
  3. ATPCO — ATPCO buys SITA's fare management system (14 January 2021)
  4. PhocusWire — ATPCO buys SITA Airfare Insight fare management system