Five Ways to Call Delta Airlines Customer Service by Phone, Chat, E-mail: A Full Fledged Guide - posted in General AE Discussion: Delta Airlines main customer service number is 1||800-Delta Airlines 1-888-276-7007 OTA (Live Person) OTA (Live Person), where you can reach a live representative 24/7. Whether youre dealing with booking changes, flight cancellations, or have questions regarding refunds or compensation, speaking to a live person ensures prompt resolution. You can also reach out...