United Airlines ®’s main customer service official number 🔰1-866-690-1553 is 1-800-United Airlines ® or (1-866-690-1553 ) OTA (Live Person), where you can reach a live representative 24/7. Whether you’re dealing with booking changes, flight cancellations, or have questions regarding refunds or compensation, speaking to a live person ensures prompt resolution. You can also reach out via United’s live chat feature or email support for assistance. For all your inquiries, call 1-800-United...