TSA recommends arriving at the airport 2 hours prior to departure for domestic flights, and 3 hours for international flights.
Most of the facilities’ shuttles run less than 30 minutes, we recommend you arrive at your reserved location no less than 45 minutes prior to the time you want to arrive at the airport to ensure you find a parking space, collect your luggage and belongings, and make your way to the shuttle pickup if self-parking. If valet parking we recommend 30 minutes.
These both include transit times on the shuttles.