There is simply not enough of a market between the USA and CUR
to justify more than one flight. When we think of vacations to that region, we think of The Bahamas, Bermuda, Jamaica, Virgin Islands, Puerto Rico, Aruba, St. Maarten, etc. Curacao is just not a place that Americans think of when planning a vacation. If the government of Curacao were to advertise in the USA, then maybe Americans would consider Curacao for a vacation and there would be more demand for flights there.