When calling from the United States or Canada, Delta's phone numbers are 800-221-1212 for domestic reservations and 800-241-4141 for international reservations, as of 2015. These numbers can be contacted 24 hours a day, seven days a week.
To resolve any technical issues while using Delta.com, contact Delta's technical support department at 888-750-3284. Delta also has a customer care department for those who want to comment or complain about a flight; this department's number is 800-455-2720. Spanish-speaking customers can call 800-511-9629 to make a reservation. Japanese, Korean and Chinese-speaking customers can call 800-237-2850 for the same purpose. Delta.com also lists different phone numbers that customers who do not live in the United States or Canada can use.