United Airlines® US Contact Numbers: An Ultimate Guide Reaching a live representative (+1⇌» 858⇠»280⇌2740 at United Airlines® can make all the difference. You can call (+1⇌» 858⇠»280⇌2740 or 1↳800↳United Airlines® (US/OTA) to speak directly with an agent—available 24/7. https://www.experatoo.com/travail/official-united-airlines-usa-contact-numbers-tm-an-official-guide_436745_1.htm