Southwest Airlines is known for doing things a little differently—and that includes their boarding process. If you’ve never flown with them before, you might be surprised to learn that they don’t assign seats. Instead, passengers are grouped and then board based on their assigned position, picking their own seats once onboard. It might sound chaotic, but it’s actually a well-organized and efficient system. In this guide, we’ll walk you through exactly how the Southwest Airlines boarding process works, step by step.
Southwest Airlines assigns boarding positions based on when you check in for your flight. The earlier you check in (starting exactly 24 hours before departure), the better your spot in the boarding line. You’ll receive a boarding group letter (A, B, or C) and a number from 1 to 60.
Want a head start? Consider EarlyBird Check-In, which automatically checks you in before the general 24-hour window opens. You’ll pay a fee, but you’re more likely to get a better boarding position.
Your boarding pass will show a group (A, B, or C) and a number (1–60). This combination determines when you’ll board the plane. The groups are called in order:
Group A: Usually includes Business Select, A-List Preferred, A-List, and EarlyBird passengers
Group B: Standard check-in passengers and families with children
Group C: Late check-ins and those with no EarlyBird
Make sure you arrive at the gate at least 30 minutes before your scheduled departure. Boarding usually begins about 30 minutes before takeoff. At the gate, you’ll see numbered signs where passengers line up according to their boarding group and number.
When your group is called, find the section that includes your number (e.g., B15 will stand between B11 and B20 signs). Gate agents may assist with organizing passengers, but the process relies on everyone lining up honestly.
Open seating is available once on board. Any available seat, whether it's in the middle, the aisle, or the window, is yours. To gain a better boarding position, try checking in early or purchasing EarlyBird Check-In if you're flying with family or a group and want to seat together.
Some passengers qualify for special boarding:
Preboarding: For individuals with disabilities or who need extra time to board
Family Boarding: For families with children under 6, allowed to board after Group A
Military & Uniformed Personnel: Often invited to board early depending on gate agent discretion
Use the Southwest App to check in exactly 24 hours ahead.
Buy EarlyBird Check-In if you want a better position without the stress.
Set an alarm to check in on time if you’re doing it manually.
Travel light, especially if you’re in Group C—overhead space fills up fast.
Southwest’s boarding process is designed to be fast and fair, even if it’s a bit unconventional. Once you understand how it works, it’s actually very simple and often more flexible than assigned seating. With a little preparation, you’ll be able to grab your favorite seat and enjoy a stress-free start to your trip.