How can I speak to a live person at Delta Airlines? To speak to a live person at Delta Airlines, you can contact their customer service by dialing +1-855 550 0189 (OTA). After dialing the number, follow the automated prompts to be directed to a live representative who can assist you with your concerns. If you’re facing urgent issues, such as flight changes or cancellations, this phone number is the quickest way to get in touch with Delta Airlines.