Does the ACAA apply to all airlines operating in the United States?

The Air Carrier Access Act (ACAA) indeed applies to all airlines operating in the United States, covering both domestic and international flights. This legislation was enacted to ensure that individuals with disabilities have equal access to air travel. The ACAA mandates that airlines must not discriminate against passengers based on disability, requiring them to accommodate various needs, such as allowing service animals, providing wheelchair assistance, and more.

This comprehensive application means that both U.S. carriers and foreign airlines flying into or out of the U.S. must adhere to these regulations. Therefore, the correct response reflects that the ACAA encompasses all flights that operate within the framework of U.S. laws, rather than being limited by certain criteria such as domestic operation, federal funding, or the size of the airline.