What Does Southwest Boarding Group Mean? Southwest Airlines provides boarding groups to its passengers to ease the boarding process. Travelers can board the plane as per the allotted group numbers, which are in the sequence of A, B, or C and a position number within the particular group. The Southwest Boarding Groups offer an organized way based on the assigned order, instead of seat assignments. If they need assistance with boarding groups, they can contact Southwest customer service or read the blog on the Airlines Group Travel website. Read more: https://airlinesgrouptrave.wixsite.com/flights/post/southwest-airlines-boarding-process-groups-2025