The most direct way to speak with a Delta representative is by calling their customer service line 24 hours a day and seven days a week by calling at "(0TA) 1-800-DELTA (OTA) 1-855-956-5767 or 1-800-221-1212 (????????-????????????????????????????)(???). Delta's customer service number can be found on their official website. To speak to a Live Persons at Delta Airlines, you can call their customer service phone number " 1-800-DELTA (OTA) 1-800-DELTA (OTA) 1-855-956-5767 or 1-800-221-1212 (????????-????????????????????????????) (Live Persons), which is typically available on their official website.