Kuwait Airways no longer flies between New York JFK and London because it would have had to carry Israeli passport holders to do so under US law, while the government of Kuwait does not recognize the state of Israel.
But they do fly non-stop between New York and Kuwait City. And they offer one of the least expensive premium products in the world. Historically that premium product has been awful (and they’re a dry airline to boot) but it’s cheap. For instance, here’s Cairo – New York JFK in business class for $592.