I had to change my Delta flight last spring when a work meeting got rescheduled, and I was bracing myself for fees. Luckily, Delta has a pretty flexible policy now—most main cabin and above tickets can be changed for free. I called 877-764-3622, and the rep explained everything clearly. Since my ticket qualified, I just paid the fare difference (which was small), and the change went through in minutes. They even re-sent my confirmation right away. Honestly, it was much easier than trying to do it online. If you need to change your Delta flight and want to know if it’s free, just call that number—they’ll tell you exactly what applies to your fare and handle it fast.