Southwest has a boarding group approach based on check-in order. To get a better boarding position, check in online exactly 24 hours before your trip. Make a note of it so you don't forget.
Get the Southwest Airlines app for your smartphone. It allows you to check in, obtain mobile boarding cards, and receive real-time flight status information. This can help you save time at the airport.
Consider joining the A-List or purchasing Early Bird Check-In. Priority boarding is granted to A-List members, and Early Bird Check-In checks you in 36 hours before your trip, providing you a superior boarding position.
Southwest offers three boarding groups (A, B, and C), each with a number. The earlier you board, the better your seat options. If at all feasible, try to get into Group A.
Arrive early at the entrance, especially if you're in Group B or C. Even if you don't receive first selection of the aircraft, you'll have a greater chance of getting a preferred seat.
Southwest provides family boarding between the A and B groups if you are flying with young children. Use this to gather a group of seats together.
Southwest is well-known for its courteous service. Being kind to airline personnel and fellow passengers may go a long way.
If you're prepared to exchange seats to accommodate families or groups, it can improve both your and their boarding experience.