Which Terminal is Southwest at St. Louis Lambert International Airport (STL)

Southwest Airlines exclusively uses Concourse E in Terminal 2 at St. Louis Lambert International Airport. The Southwest Airlines STL Airport Terminal 2 connects over 50 nonstop destinations across the North, Mexico, and the Caribbean. This terminal features modern and easy-to-navigate ticketing desks, security checkpoints, boarding gates, dining options, and arrival facilities. This terminal is connected to Terminal 1 through the free terminal shuttle or the MetroLink. The MetroLink station at Terminal 2 is near Exit Door 12. 

Lambert Airport Southwest Airlines Terminal Location

Terminal 2 is dedicated primarily to Southwest Airlines and situated at Airport Township, St. Louis, MO 63145, on the east side of the airport building. The flight conducts all its operations from the upper and lower levels of the Southwest Airlines Terminal St Louis Lambert Airport​.

• Upper Level: It features check-in counters, security checkpoints with TSA PreCheck and CLEAR Lanes, boarding gates, and Wingtips Lounge.
• Lower Level: International arrivals and baggage claim are handled at this level.

Check-in

The Southwest ticket counters are located right inside the main doors of Terminal 2 on the upper level. The airline also offers curb-side check-in at STL airport near entry gate 1. After entering, look for the Skycap podiums outside at the Departures Drive. These desks operate from Sunday to Friday, 4:00 am to noon, and on Saturday from 4:00 am to 10:00 pm.

Security Screening

The STL Airport Southwest Terminal 2 features only one security checkpoint at E gates. This checkpoint opens from 3:00 am to 10:00 pm with standard security check lanes, TSA PreCheck, and CLEAR lanes.

Boarding Gates

Southwest follows its signature open seating boarding system based on boarding groups, A, B, and C, from multiple gates in Concourse E for departure. The dedicated gate numbers for Southwest Airlines are E4, E6, E8, E10, E12, E14, E16, E18, E20, E22, E24, E31, E33, E34, E36, E38, and E40. Check the assigned gate number for the flight on digital screens throughout the terminal.

Southwest Terminal STL Arrivals

All Southwest Airlines arrivals take place at Terminal 2. After landing, follow the signs for Baggage Claim, which will lead downstairs to the lower level. Southwest luggage is delivered to specific carousels 1 through 4. If the bags don’t show up or are damaged, the Southwest Baggage Service Office is located right next to the carousels on the same level.

Terminal 2 Lambert Airport Southwest Airlines Map

Using the Lambert Airport Terminal map helps to locate amenities, plan a walk from the security checkpoint to gates, and find food and shopping outlets.

Terminal 2 Lambert Airport Southwest Lounge

Southwest Airlines Terminal STL has only one common-use lounge, Wingtips Lounge.

• Location: Terminal 2, Upper level, near gate E31
• Operating Hours: Monday, Tuesday, Thursday: 7:00 am to 8:00 pm; Closed on Sunday.
• Access: Single-visit Pass, Annual Membership, Priority Pass, LoungeKey, LoungeBuddy, Diner’s Club, Lounge Club

Lambert Airport Southwest Airlines Terminal Assistance

• For general inquiry, call 800-435-9792
• Call baggage service office 314-592-6230 for lost or delayed baggage inquiries.
• Call the cargo service at 314-592-6200.

The Southwest Airlines – STL Airport Terminal 2 is easily accessible by airport shuttles, taxis, rideshares, and personal vehicles, with clearly marked signage. The terminal is connected to parking facilities and ground transportation through a free terminal shuttle and the MetroLink.

Frequently Asked Questions