Delta Service Dog Policy Overview
Delta Air Lines allows service dogs that are individually trained to perform tasks for a person with a disability, including psychiatric service dogs, in the cabin at no charge. The airline limits service animals to dogs only and requires them to be harnessed, leashed, or tethered throughout the flight, with documentation submitted at least 48 hours before departure. Emotional support animals are no longer classified as service animals under Delta policy, and only dogs meeting the service animal definition are accepted as of the latest update. For details, see the official Delta Air Lines service animal page Delta service animal travel policy.
Delta requires passengers to provide a DOT-compliant Service Animal Air Transportation Form confirming the animal's training and health, and a Veterinary Health Form if the trip exceeds four hours or involves a layover longer than eight hours. The airline may deny travel to a service dog if it displays aggressive behavior, eliminates in the cabin without containment, or exceeds size and weight guidelines that prevent it from fitting at the passenger's feet or on their lap. Delta also reserves the right to limit the number of service animals per passenger to two and to require that the animal remain on the floor at the passenger's seat without blocking aisles or exits.
Documentation, Fees, and In-Cabin Rules
Delta does not charge a fee for service dogs, but passengers must submit the required forms through the airline's online portal or at the airport check-in counter. The DOT Service Animal Air Transportation Form must be signed by a licensed mental health professional or medical doctor for psychiatric service animals, and the Veterinary Health Form must be issued within ten days of travel. Delta enforces a strict requirement that service dogs remain under the passenger's control at all times, and the airline may require the animal to be secured with a harness or leash that does not extend beyond the passenger's foot space.
Delta service dogs must be at least four months old, housebroken, and free of offensive odors, and they are not permitted to occupy seats or be placed in overhead bins. The airline may require service dogs to remain on the floor at the passenger's feet, and large dogs that exceed the dimensions of the foot space may be required to travel in the cargo hold under the applicable pet program, which involves fees and conditions separate from the service animal policy. For current DOT guidance on service animal air travel, see the U.S. Department of Transportation service animal air travel rules.
Breed Restrictions, Behavioral Standards, and International Travel
Delta does not maintain a list of banned dog breeds for service animals but reserves the right to deny any animal that poses a direct threat to health or safety based on observed behavior. The airline evaluates service dogs on a case-by-case basis at check-in and may require additional documentation or a follow-up evaluation if there are concerns about the animal's behavior, including growling, snapping, or unprovoked aggression. Delta also requires service dogs to remain on the ground and not block aisles, emergency exits, or galley areas, and flight attendants may ask for confirmation of the animal's status and tasks if documentation is not presented in advance.
For international flights, Delta aligns its service dog policy with destination-country regulations, and passengers are advised to check the specific import, quarantine, and documentation requirements of the country they are visiting. Some countries require additional health certificates, vaccination records, or import permits that go beyond Delta's standard forms, and failure to comply can result in denied boarding. Delta recommends contacting the airline's accessibility assistance line or visiting the Delta accessibility services page pet travel and service animal details to confirm requirements for specific routes, and passengers can also review the latest DOT updates on