Delta Airlines allows pets to travel with owners on-board its aircraft. Small pets that can fit comfortably in a carrier under the seat are allowed for a fee. Only dogs and cats are accepted as in-cabin pets and they must remain in their carrier for the entirety of the flight. Delta requires all paperwork like vaccination records and health certificates to be current and appropriate for the destination. For more information about Delta Airlines Pet Policy, you can visit the Airlines Pet Policy website. Additionally, you can contact at 800-221-1212 or +1-844-902-4930 (OTA Skip-Waiting).