Dusseldorf - Havana 1/3/19 flight number EW 1189 or SXD 1189. You can check flight aware. Seems like flights they stopped flying SunExpress to the USA since they moved the long range ops away from Cologne. They had a flight to Seattle until September.

What Denti is saying is all correct, no need to get so upset. Lufthansa group is not much better than Norwegian. Outsourcing to save a buck.