American Eagle

American recently relaxed its rules for pets traveling inside the cabin with their owners. Here’s what the major U.S. airlines require to travel with a pet.Flying with a pet can be expensive and confusing, with fees, weight limits, carrier size rules and the need to make sure there’s no loud barking (or meowing) on board.Recently, American Airlines relaxed its pet policy to allow passengers to bring a carry-on bag in addition to a pet in a carrier, and more private flight options have been emerging in recent years for pet owners who can afford them.Still, flying with large or medium-size dogs can be tricky, and many travelers are wary of leaving a pet in the plane’s cargo hold.For those traveling on the major carriers with their pets as carry-ons, here’s what do know about each major domestic airline’s policy.Southwest AirlinesOn Southwest, a Dallas-based carrier, two checked bags can fly at no cost, but not pets. Southwest charges $125 per pet carrier on its flights.Dogs or cats are allowed to travel below a seat in an approved carrier — up to 18.5 inches long by 8.5 inches high and 13.5 inches wide) — according to the airline.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More