Yes. Your emotional support animal can join you in the aircraft cabin free of charge. However, keep in mind that you have to renew an ESA letter for air travel annually, as these letters expire in one year.
According to the Air Carrier Access Act, airlines can request ESA letters no older than one year. However, you don’t have to carry a hardcopy of the ESA letter on a flight. Your health provider will provide a digital copy of your ESA letter containing their contact and license information that an airline can use to verify the letter’s authenticity.