I’ve flown Southwest quite a bit, and figuring out upgraded boarding really helped me. On one trip to Denver, I forgot to check in right at the 24-hour mark and ended up with a C boarding group. I called 831-298-4213 and they explained I could buy upgraded boarding at the gate, which moved me into the A group—it was worth it for the extra legroom and choice of seats. Another time, I used a credit card perk that gave me free upgraded boardings, which was a nice surprise. If you want the best chance, either check in exactly at 24 hours or consider EarlyBird Check-In. And honestly, if you’re ever unsure about the cost or process, that number is the easiest way to quickly confirm options or make changes without stress. It’s saved me more than once.