Delta Air Lines, according to Airline Route, will drop the weekly New York (JFK) – Havana route on September 1, 2018.
The route is currently served with Airbus A319 aircraft.
Copyright Photo: Delta Air Lines Airbus A319-114 N339NB (msn 1709) SNA (Michael B. Ing). Image: 939963.
Delta aircraft slide show (Airbus):

