B boarding group: This is the next best boarding group to be in if you want the chance to select a seat you can live with. However, being near the beginning of the B group is a lot better than the end.

In 2026, Southwest Airlines has transitioned away from its traditional "A/B/C" open-seating groups to a new Assigned Seating model. Passengers are now assigned to Groups 1 through 8 based on their fare type and loyalty status. If you are in what used to be considered a "mid-tier" position, your experience now depends on your pre-selected seat rather than your place in line. Generally, being in an earlier group (Groups 1–4) is highly desirable as it guarantees earlier access to overhead bin space. Those who purchase "Choice Extra" or "Choice Preferred" fares typically land in the first few groups. If you are assigned to a later group, you may find that bin space near your seat is already occupied, requiring you to gate-check your bag or store it further back. Therefore, while your seat is reserved, an earlier group remains the "better" option for travelers with carry-on luggage.