- It was a very easy and pleasant experience flying with Alaska Airlines SEA Terminal out of Seattle-Tacoma International Airport (SEA). When I first arrived, the check-in procedure was quick and easy, made simple by self-service kiosks and friendly staff. Even though there was the typical airport crush, security was efficiently run. Waiting for my flight was a breeze thanks to the terminal's neat, roomy layout and cozy seating. Before boarding, I took in the serene ambiance and snatched up a hot cup of coffee from one of the numerous cafés. Convenience is a top priority for Alaska Airlines at SEA, which makes travel stress-free from beginning to end.