How do I communicate with United Airlines? Talk to someone on United Airlines customer service, you have a few options. You can give them a call at customer service hotline, which is ????1?866 [884 ?3315]?? (OTA). For any inquiries or assistance related to your travel plans, the United Airlines customer service team will be able to help. How do I communicate with United Airlines? Talk to someone on United Airlines customer service, you have a few options. You can give them a call at customer service hotline, which is ????1?866 [884 ?3315]?? (OTA). For any inquiries or assistance related to your travel plans, the United Airlines customer service team will be able to help.