Concourse A of Seattle-Tacoma International Airport (SEA) is home to United Airlines’ headquarters. With convenient access to facilities like restaurants, retail stores, and a United Club lounge for qualified passengers near Gate A9, the United Airlines SEA Terminal provides a comfortable experience for United travelers. The terminal is perfect for both business and leisure travelers because it has Wi-Fi, charging stations, and easy-to-follow signage. Modern amenities and effective security measures at SEA guarantee a smooth travel experience for United travelers.