Seattle–Tacoma International Airport — Seattle, United States

Seattle-Tacoma International Airport, generally shortened to Sea-Tac and coded SEA, sits roughly midway between its two namesake cities in the Pacific Northwest and serves as the principal hub for Alaska Airlines alongside a significant Delta Air Lines operation, making it one of the more competitively contested major hub airports in the United States. The region's technology and aerospace economy, anchored by companies headquartered in and around Seattle, has fueled steady growth in both domestic and international demand, with SEA adding numerous long-haul routes to Asia and Europe over the past fifteen years as the airport pushed to compete with larger West Coast gateways. Its location places it within reach of dramatic scenery, including Mount Rainier to the south and Puget Sound's waterways nearby, and the airport has invested heavily in new international arrivals facilities and a satellite terminal to handle rising passenger volumes across an increasingly international route network.