You can direct most complaints related to travel either to the State Consumer Protection Office, Federal Trade Commission (FTC) or Better Business Bureau. If complaint is severe, consult a licensed attorney or to file a case in a local small claims court.
Complaints About an Airline
The agency to contact may differ depending on your cocnern. For complaints on Service or Discrimination, resolve the complaint directly with the airline first. If the airline fails to satisfy the complaint, file a complaint with the U.S. Department of Transportation (DOT). For concerns on Airline Safety, contact the Federal Aviation Administration (FAA). Meanwhile, concerns about Airline Security is tackled by the Transportation Security Administration (TSA).
The Fly-Rights: A Consumer Guide to Air Travel can also help you about your rights and responsibilities and problems as an air traveler. It talks about delayed, cancelled and overbooked flights, airfares, baggage, frequent flyer programs, travel scams and airline safety and security.
Complaints About a Hotel or Motel
If you have complaints on hotel or motel services/accommodations, directly notify the establishment’s manager or customer service line. If your complaint goes unresolved, contact the regional manager or another senior executive,
Complaints About Travel Agents or Travel Agencies
Your complaints about travel agents/agencies should be filed to the organization to which the agency is accredited which may be Airlines Reporting Corporation (ARC), American Society of Travel Agents (ASTA) or National Tour Association (NTA).
Complain about a United States Embassy or Consulate
For fraud, waste, abuse or misconduct at the US embassy or consulate, you can attempt to directly address the embassy/consulate first. However, if this is not possible, the Office of Inspector General (OIG) in the US Department of State can help you learn how to file a complaint regarding this.