For a complete refund from United Airlines, you have multiple options. You can reach out to their customer service team via phone at +1 (888) 322-4047, utilize their online platform, or visit the airport for assistance. Your satisfaction is their priority, and they will guide you through the process. Remember to review the terms and conditions on their official website before planning your trip. United Airlines is committed to ensuring a smooth and hassle-free experience for all travelers.