Small dogs who fit in a TSA-approved kennel or carrier will be allowed to travel in-cabin under the seat in front of you. Your kennel or carrier can be soft or hard-sided. Hard-sided kennels cannot be any larger than 17.5 inches long x 12 inches wide x 7.5 inches high.
What temperature restrictions are pet friendly on United Airlines?
United Airlines' PetSafe program has temperature restrictions to ensure your pet's safety. The airline will not transport pets in the cargo hold if the ground temperature is below 20°F (-6°C) or above 85°F (29.5°C).
How strict is United Airlines about pet carrier size?
While there are no weight or breed limitations for pets, they must travel in either a hard-sided or soft-sided carrier. This carrier must fit under the seat in front of you or you cannot fly with your pet. There can only be one pet per carrier, and they must be able to stand up and turn around while inside.