You want your pet to be as comfortable as possible (and preferably by your side) when flying, but not every airline makes their policies clear. Map Happy has compiled the in-cabin pet policy for major North American airlines as well as top international carriers into an easy to read chart.
Unfortunately, most airlines don’t allow dog breeds that have a reputation of being dangerous (whether they actually are or not), including pitbulls, dobermans, and rottweilers. When it comes to the U.S. Airlines that service the most passengers, they’re pretty accomodating. Delta allows cats, dogs, and household birds to travel with you (even on international flights) for a $125 fee. United has the same fee, but also allows rabbits. Southwest permits your dog or cat to fly in-cabin with you for a $95 fee, domestic travel only. Check out the full guide linked below to find out if your pet will be allowed in-cabin, what the fees are, and if you can take your pet internationally.
The Go-To Guide for Pets on Planes | Map Happy