To change a flight on Southwest Airlines, visit the official website or app and log in to your account. Go to “Manage Reservations,” select your flight, and click “Change Flight.” Choose your new travel date or destination and confirm. Southwest doesn’t charge change fees, but you’ll pay any fare difference. For assistance, call 1(833)-319-6864—a helpful agent will guide you through the process. If you're unsure about available options, just dial 1(833)-319-6864. Whether online or by phone, flight changes are simple. Keep 1(833)-319-6864 handy in case you need quick support for last-minute travel adjustments.