On Southwest Airlines in 2026, "Priority Boarding" is defined by your position in the "A-List" or "Business Select" categories. Because Southwest uses an open-seating model without assigned seats, your boarding group (A, B, or C) and your number (1 through 60) determine your ability to pick a prime seat and find overhead bin space. True priority boarding is reserved for Business Select passengers, who are guaranteed a position between A1 and A15. Following them are the A-List Preferred and A-List members. If you did not book a premium fare or hold elite status, you can purchase "Upgraded Boarding" at the gate or through the app (starting 24 hours before flight) to secure an A1-A15 spot if any are still available. Another option is EarlyBird Check-In, which automatically checks you in 36 hours early; while this doesn't guarantee an "A" position, it usually places you ahead of the general "C" group, effectively giving you "secondary priority" in the boarding process.