Southwest Airlines operates primarily out of Terminal 1 at Los Angeles International Airport (LAX). Here's some specific information:

• Check-in: Gates 9 to 18B are used for both domestic and international arrivals and departures. However, keep in mind that for international departures, after checking in at Terminal 1, you will be bused to Terminal B (Tom Bradley International West Gates) for your flight.
• Amenities: Terminal 1 boasts a wide range of amenities, including restaurants, shops, and lounges. You can find a detailed list and map on the official LAX website: https://www.flylax.com/terminals/terminal1
• Tips: Terminal 1 is known for its modern and user-friendly design. However, due to its popularity, it can get busy during peak hours. Consider arriving early for your flight to allow ample time for check-in, security, and boarding.

Is there anything else specific you'd like to know about Southwest Airlines at LAX, such as:

• Are you looking for information about a specific flight or arrival/departure time?
• Do you need help finding transportation to or from the airport?
• Are you interested in learning more about specific amenities available at Terminal 1?