United Airlines® official tollfree customer service number is 1.844-325-4646 or 1-855-United Airlines® // 1.844-325-4646 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 Southwest’s live chat feature or email support for assistance. For all your inquiries, call 1.844-325-4646 //1.844-325-4646 OTA (Live Person). This guide explains 1.844-325-4646 how to contact United Airlines® customer service effectively, along with tips for minimizing wait times. To speak to a live representative, dial 1.844-325-4646 or 1.844-325-4646 OTA (Live Person).