Salt Lake City International Airport

Salt Lake City International is the primary hub airport for the Intermountain West and Delta Air Lines' fourth-largest hub after ATL, DTW, and MSP, handling roughly 28M passengers (2024) across 112 destinations served by 28 airlines. SLC's strategic value is geographic: the airport sits almost exactly equidistant from the U.S. West Coast and the Mississippi, a position Delta has used since the Western Airlines merger in 1987 to bank flights between Pacific Northwest cities, California, and the Mountain and Great Plains states without the congestion of its coastal hubs. A $4.1B new airport — the largest public works project in Utah history — opened in phases from 2020 to 2024, replacing the 1960s-era terminal with a single consolidated facility of two linear concourses (A and B) connected by an underground tunnel and a 909 ft (277 m) elevated pedestrian bridge. The new complex added 78 gates sized for next-generation narrowbodies and widebodies. Four runways include two parallels at 12,002 ft (3,658 m) and 12,000 ft (3,658 m), plus a 9,596 ft (2,925 m) crosswind and a 4,893 ft (1,491 m) general aviation runway, giving SLC the capacity to run three simultaneous arrival streams. Elevation is the distinguishing operational factor: at 4,227 ft (1,288 m), SLC is one of the highest major hub airports in North America, requiring longer takeoff rolls and reduced payloads on hot summer days. Delta operates direct widebody service to Amsterdam, Paris, London, Frankfurt, and Mexico City, and SLC functions as the dominant connector for ski traffic into Park City, Jackson Hole, and the Wasatch resorts during winter.