Frontier Airlines TPA Terminal used for domestic flights, Airside E at Tampa International Airport (TPA) is where Frontier Airlines operates. Among the services provided by Airside E are culinary establishments, retail stores, and cozy seating places. Travelers on Frontier should arrive at least two hours prior to departure in order to ensure a seamless check-in and security procedure. Frontier Airlines prioritizes low-cost travel, so be aware that supplementary services like seat preference and checked baggage could cost more. Because things can change, always check your gate and terminal information before you arrive.