Frontier Airlines operates out of Terminal South (Concourse A) at Seattle-Tacoma International Airport (SEA). The Frontier Airlines Seattle–Tacoma Airport Terminal offers a variety of services and amenities, including dining options, retail shops, and comfortable seating areas, ensuring a pleasant experience for passengers. Concourse A is well-organized, making it easy for Frontier Airlines passengers to navigate through check-in, security, and boarding gates. Travelers flying with Frontier Airlines from SEA can enjoy a smooth and convenient experience at Terminal South.