To contact Delta Airlines in Spanish, you can call the Delta phone number +1-855-550-0744 (US) or + +1-855-564-8070 (MEX). You also have the option to call + +1-855-550-0744 for assistance. Simply dial the Delta Phone Number in Spanish and follow the instructions to be assisted by a representative. How to call Delta Airlines in Mexico To call Delta Airlines from Mexico, you can use the number. This number will connect you to customer service, where you can receive help with your reservations, flight changes, and more.