Delta Service Dog Policy Overview
Delta Air Lines allows service dogs that are individually trained to perform tasks for a person with a disability. Emotional support animals are no longer recognized as service animals under Delta policy, following updated DOT rules. As of 2025, Delta requires passengers to submit the DOT Service Animal Air Transportation Form at least 48 hours before departure. The form must be completed by a licensed mental health professional or physician and confirm the animal's training and health. Delta may deny travel to any service dog that displays aggressive behavior, eliminates in the cabin without containment, or blocks aisles and emergency exits. Passengers can check current documentation requirements on Delta's official service animal page Delta Service Animals.
Delta defines a service dog as a dog that is individually trained to do work or perform tasks for the benefit of an individual with a disability, including physical, sensory, psychiatric, intellectual, or other mental disabilities. Under DOT guidance, Delta can ask two questions to verify service animal status: whether the animal is required because of a disability and what work or task the animal has been trained to perform. Delta does not require documentation for psychiatric service animals beyond the DOT form, but the airline may request additional verification if the animal's training is not apparent. Delta service dogs must be harnessed, leashed, or tethered at all times unless the handler's disability prevents using these devices. In that case, the handler must maintain control through voice commands, hand signals, or other effective means.
Documentation, Fees, and In-Cabin Requirements
Delta does not charge a fee for service dogs that meet the airline's definition and documentation requirements. Emotional support animals, comfort animals, and pets are subject to different rules and fees, with pets typically requiring a pet fee and advance reservation through Delta's Pet Safe program. The DOT Service Animal Air Transportation Form must be submitted electronically through Delta's accessibility request portal or at the airport check-in counter. Delta may require the animal to fit within the handler's foot space on the aircraft floor, and large dogs that exceed this space may be denied cabin access. Delta recommends that passengers review breed and size restrictions on the airline's website Delta Service Animals before booking.
Delta enforces a two-service-dog-per-passenger limit on flights, with each dog requiring a separate DOT form. Service dogs that do not meet the DOT definition may be reclassified as pets, subject to pet fees and carrier requirements. Delta reserves the right to require that a service dog sit on the floor at the handler's feet or between the handler's knees without blocking another passenger's seat. Dogs that growl, bark repeatedly, bite, jump on other passengers, or relieve themselves in the cabin without proper containment may be removed from the flight. Delta cabin crew can coordinate with ground services to rebook affected passengers when a service dog is removed for behavioral issues.
Recent Regulatory Changes and Airline Compliance
The U.S. Department of Transportation updated its service animal rules in 2021, removing emotional support animals from the definition of service animals for air travel. Delta adopted these changes immediately and now applies the same standards as other major U.S. carriers such as American Airlines and United Airlines. The DOT's final rule clarifies that only dogs trained to perform specific tasks qualify as service animals for cabin access, and airlines may limit service animals to dogs only. Psychiatric service dogs remain eligible under the new rules, provided they are trained to perform tasks directly related to the handler's psychiatric disability. The DOT rule text and compliance guidance are available on the Department of Transportation website DOT Service Animal Rules.
Delta's service animal policy aligns with the Air Carrier Access Act and DOT enforcement guidance, which prohibits discrimination against qualified individuals with