St. Louis Lambert International Airport, commonly referred to as Lambert Field or simply Lambert, is the primary international airport serving St. Louis, Missouri and its metropolitan area. Covering 3,793 acres (1,535 ha) of land, it is the largest and busiest airport in the U.S. state of Missouri, being located 14 miles (23 km) northwest of downtown St. Louis in unincorporated St. Louis County between Berkeley and Bridgeton. The airport provides nonstop service to over 80 destinations within the United States, Canada, Mexico, the Caribbean, and Europe, having served nearly 16 million passengers in 2024.