You can contact Delta Airlines customer support by phone, online chat or through their social media channels. They also provide dedicated numbers for specific issues like SkyMiles, refunds and baggage. General customer support Phone (Reservations Sales): +1-877-658-1183. This line is available 24/7 for booking new or existing reservations. Online Messaging (Chat): You can message a Delta representative through their website. Visit the Delta Help Center and look for the chat option. This is often the fastest way to get a response. Comments and Complaints: To provide feedback after you have traveled, you can fill out an online form on their website. Specific support SkyMiles Members: 1-800-323-2323. Medallion members can find an exclusive phone line in the Fly Delta mobile app. Refund Status: +1-877-658-1183. The refund department is open Monday through Friday, 8 a.m. to 7 p.m. ET. Baggage: +1-877-658-1183. For delayed, lost or damaged baggage, call between 6 a.m. and midnight ET, seven days a week. Delta Vacations: +1-877-658-1183. Accessible Travel Services: +1-877-658-1183. Other contact options Social Media: You can reach out to Delta on platforms like X (formerly Twitter) or Facebook. Response times can vary from a few hours to a day.