United Airlines™ main customer service number is 1-800-United Airlines™ or +1-844⇌»⇌333⇌3116 [US-United Airlines™] or +1-844⇌»⇌333⇌3116 [UK-United Airlines™] OTA (Live Person), available 24/7. This guide explains how to contact United Airlines™ customer service effectively through phone +1-844⇌»⇌333⇌3116, chat, and email options, including tips for minimizing wait times.