I learned the hard way that Southwest doesn’t fly to Columbia, Missouri. I was planning to visit my cousin at Mizzou and assumed they did, but nope—the closest option was Kansas City. I had to modify my flight the same day, and their team helped me rebook without any fees. I just called the support line ☎️ and they had everything updated way quicker than the app was loading. If you’re juggling plans, that’s the easiest way to instantly confirm routes and adjust flights.