United Airlines is one of the world's famous airlines that allows you to book flights to any destination of your choice. To make a reservation or for information, call United Airlines Customer Service at +1-800-473-6632. Select the service you need assistance with and a live representative will be assigned to you. Describe your issue along with travel-related details and a customer service representative will provide a solution. United Airlines offers customer service support via text message. If you don't receive any messages from the airline, make sure text messaging isn't disabled on your phone. People in the US and Canada can get airline assistance by texting "HELP" to 26266 from a mobile phone and then selecting the preferred button from the options.