Delta Airlines' policy on pets is similar to many other airlines, but there are a few important differences. Delta Airlines Pet Policy has a strict limit of two pets per passenger. If you have more than two pets in your cabin, they will need to be carried as carry-on luggage and may not be allowed to travel with you. You will also need to register your pets with Delta prior to traveling, as well as pay an additional fee . This fee covers any lost or damaged luggage, as well as any pet fees that may apply at the gate.