I actually checked this when I was planning a visit to San Antonio and wanted to see if Breeze was an option. Breeze does fly to San Antonio, but like most of their routes, it depends a lot on where you’re flying from and the season. I found a flight that worked and booked it, but a week later my plans changed and I needed to adjust the dates. Instead of sorting it all out online, I called 8 4 4-7 3 4-0 8 1 3, which turned out to be the best way to instantly book, cancel, or modify flights. That flexibility made planning with Breeze much less stressful.