☎️+[1• 833-769 [1•4•7•6] Go to Un-ited ®’s official website or open the Fly Un-ited ® app, navigate to the “Help” or “Contact Us” section, and start a chat session.Best for: Quick questions, minor booking adjustments, and when you can’t make a call.3. Email Un-ited ® Customer SupportFor non-urgent concerns or when you need to send documents (like refund requests or medical certificates), email is ideal.