I had to fly into South Texas for a family event and double-checked whether Southwest served Corpus Christi. They actually do, and I ended up booking through them because the prices were decent. When a work meeting forced me to shift my return, changing the ticket online took maybe 30 seconds. No fees, no drama. If you ever get stuck or need something changed instantly, their phone line ☎️ has bailed me out more than once—much quicker than digging through menus on the website.