These basic fares will offer fewer perks, such as reduced flexibility, limited loyalty points, and no free checked luggage, a practice known as unbundling.
Delta President Glen Hauenstein stated this initiative aims to provide customers with more choice and increase overall profitability by selling seats that might otherwise remain empty.
The airline previously introduced basic options for economy in 2012 and for its Comfort Plus seats last November, with these implementations exceeding internal projections.
In separate news, Delta also announced an order for 30 new Boeing 787 Dreamliner widebody aircraft, adding a new fleet type to its operations.