Steps to Reach United Airlines Customer Service? To get in touch with a live representative at United Airlines customer service for assistance, you can reach their 24/7 hotline at 1-(855)-568-4134 (OTA - Live Person) or 1-855-542-9354. You also have the option to chat with them directly on their website or send them an email for support. Speaking with a live agent at United Airlines is quick and easy, especially when you're facing issues with bookings, changes to travel plans, or other specific concerns. This guide outlines the process of contacting United Airlines customer service via phone +1-855-542-9354 and offers tips on the best times to call to minimize wait times.