Salt Lake City International Airport — Salt Lake City, United States

Salt Lake City International Airport, coded SLC, functions as Delta Air Lines' primary western hub, funneling connecting traffic between the Pacific coast, the Mountain West, and destinations across the rest of the country. The airport sits at an elevation of roughly 4,200 feet on the eastern edge of the Great Salt Lake, with the Wasatch Range rising sharply just beyond the runways, a backdrop that also makes SLC the main arrival point for skiers heading to Park City, Alta, and other nearby resorts. A multi-year, multi-billion-dollar rebuild replaced the airport's aging terminals with a new consolidated facility, completed in phases through the early 2020s, designed to handle rising passenger volumes while easing what had become a maze-like older layout. Utah's booming tech and outdoor-recreation economy has driven steady growth in both business and leisure travel, reinforcing SLC's position as one of the busiest airports in the interior American West.