TheSea United Terminal in Concourse A is where you exit from Seattle-Tacoma International Airport if you're flying with United Airlines. This terminal was created especially to manage United's airline operations well, offering travelers fast check-in desks, a variety of dining options, and hygienic, roomy waiting areas. It's perfect for lone travelers, families, and business travelers alike. In addition, the Sea United Terminal has power outlets, digital boards, and United Club access for qualified members. This terminal has everything United travelers need for a dependable and efficient airport experience.