The SkyWest Airlines pet policy is as follows:
Pets are accepted in the aircraft cabin.
Kennels must fit under the seat, and the pet must remain in the kennel at the airport, during boarding/deplaning and during all phases of flight.
Seats may not be purchased for the pet.
For pets as checked baggage, maximum kennel size accepted is limited to a reservation of one large kennel, or two small or medium per flight.
SkyWest does not accept extra-large or giant kennels.
Reservations are required.
Taking a pet to a foreign country involves preparation and planning far in advance of your departure date. Requirements for pet travel to a foreign country are set by the destination country. If you are you traveling to another country and bringing along your pet you’ll need to meet the animal health requirements of the country you are visiting.
More information on the SkyWest Airlines pet policy