you need to have a health certificate to travel with your pet. it is required by law. not getting one can cause major problems for you. we travel frequently from philly to florida. we get one even when we drive. most hotels require one @ check in. if they don't i would worry they are putting you in 1 of a few pet friendly rooms that could be flea infested. the health certificate protects you in this situation. they can't be more than 10 days old. i have a wellness plan @ banfield pet hospital and the health certificates are free. ** people in my area use usa3000 and spirit airlines. it's less than $30 each way to put your furbaby under the seat. they limit the nuber of pets in cabin so call asap to reserve a pet spot.