STL · St. Louis Lambert International Airport

Overview

St. Louis Lambert International Airport (STL) is the principal commercial airport serving St. Louis, Missouri, and the surrounding Midwest region. Ranked number 31 on the most recent list of the busiest airports in the United States, it handled approximately 15.9M passengers in its last reported year, placing it firmly among the country's most consequential aviation gateways. The airfield operates 4 active runways and presents travelers with 2 passenger terminals, organized into a layout that has been refined across decades of capital improvement programs and changing carrier strategies.

For most arriving travelers, the first impression of St. Louis is shaped here. The airport functions as a hub for Southwest Airlines, which means a substantial share of the traffic on the field consists of connecting passengers who never leave the secure side of the building. That dynamic affects everything from how the concourses are laid out to how long the security lines run during the morning and late-afternoon banks. Understanding which airline you are flying and which terminal it uses is the single most useful piece of information for navigating STL smoothly, because the journey between terminals can range from a short walk to a dedicated train ride depending on the configuration.

Beyond raw passenger counts, St. Louis Lambert International Airport plays an outsized role in the local economy. Tens of thousands of jobs — from ramp agents and TSA officers to chefs, retail workers, and corporate aviation staff — are tied directly to operations on the field, and the surrounding cargo, logistics, and hospitality industries that orbit the airport employ many thousands more. Concession programs have also shifted in recent years toward locally owned restaurants and regional brands, so the food and shopping you encounter inside the terminals are increasingly an extension of the St. Louis dining and retail scene rather than the generic chain-store airport experience of an earlier era.

This guide is organized into focused sections so that you can jump straight to the information you need. The terminals page walks through each building and concourse, including which airlines operate where and how to move between them. The airlines page lists the major carriers that serve STL along with their typical destinations. The parking page explains the on-site garages, economy lots, cell phone waiting areas, and off-site alternatives. The ground transportation page covers rideshare pickup zones, taxis, public transit, rental cars, and shuttle options. The amenities page surveys lounges, dining, shopping, family services, and accessibility features. Each page is written for first-time visitors and frequent flyers alike, with the expectation that you will check official airport sources for last-minute construction notices and operational changes.

Background: St. Louis Lambert International Airport (IATA: STL, ICAO: KSTL, FAA LID: STL), 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)[2][3] 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 Eur