The Sea 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 traveler... https://airlinesairportterminals.com/united-airlines/united-airlines-seattle-tacoma-international-airport-sea-terminal/