Wonder Tails Canine Transport reserves the right to refuse transport of any pet due to misrepresentation at the time of scheduling as to the pets ability to walk or stand of its own accord, or on a leash, and is of a size and weight that one person is able to pick up and carry.* Must be below the required weight limit of the airlines. Each airline has their own requirements: American 8 week-17lbs, Delta 10 weeks-20lbs, Alaska 8 weeks-20lbs, Spirit-8 weeks-40lbs, Southwest 8 weeks -no lb limit, United 16 weeks-20 lbs. *