You must present a complete Department of Transportation Service Animal Air Transportation form at the ticket counter or gate on the day of travel. The form should be dated on or after the date you purchased your ticket. If the form is not presented or is incomplete, the animal may be denied transport. A service animal vest, harness, ID card, or registration will not be accepted in place of the form as the sole indication an animal is a trained service animal. Please visit the service animal page for more details. Additionally, for international flights, it’s important to note that there may be specific regulations and documentation criteria for service animals, which can differ from country to country. It is the Customer’s responsibility to ensure compliance with all required documentation and procedures.