In the United States, almost all commercial airports are publicly owned by local, regional, or state governments, which is a significant contrast to the highly privatized airport models seen in Europe and the Asia-Pacific region. These airports are typically managed by "Airport Authorities" or "Commissions" that function as independent government agencies. While the infrastructure and land are public, the services within the airport—such as airlines, shops, restaurants, and parking—are almost entirely operated by private companies. There is only one major commercial airport in the U.S. that is fully privatized via a long-term lease: San Juan’s Luis Muñoz Marín International Airport in Puerto Rico. Although the "Airport Investment Partnership Program" (AIPP) was expanded in 2018 to encourage more privatization, most attempts (like in St. Louis or Chicago) have faced significant political opposition and complex tax-exempt bond issues. In 2026, the U.S. model remains a unique "High-Fidelity" public-private hybrid where the government maintains control of the gates and runways while private entities drive the commercial revenue.