20 poundsAnimals count as carry-on items. The combined weight of the pet and carrier may not exceed 20 pounds. The pet must remain inside their dog or cat travel crate (17-by-8.5-by-12.5 inches) while at the airport and in the aircraft for the entire flight. Only four pets are allowed per flight.
What size of dog carrier do I need?
You need to know your dog's height and length to select the correct carrier size. The carrier should be large enough for him to turn around easily and to curl up or stretch out when lying down. Measure his back from his neck, where the collar sits, to the base of his tail. Then add a few inches to that measurement.
What carriers allow dogs on a flight?
Many airlines allow pets to fly in the cabin as a carry-on, so long as they stay inside a carrier that's small enough to fit under the seat in front of you for the duration of the flight. Southwest, Alaska, United, American, Delta, Hawaiian, Spirit, and Frontier are some of the airlines that allow pets as carry-ons.