Avelo Airlines allows small cats, dogs, rabbits, and birds to travel in-cabin. Your pet must be able to fit comfortably in a hard-sided or soft-sided container that can be stowed under the seat in front of you.
What size dog can you carry on a plane?
Small dog breeds can be brought into the cabin provided they're inside their crate and are crate trained. Typically, they need to weigh 20 lbs. or less, following the airline's carry-on luggage weight restriction. If you have a large dog, you can still take them on the plane but not in the cabin.