Delta Air Lines flies daily Atlanta - Zurich and since June 2009 a seasonal summer connection from New York (JFK) to Zurich. The JFK-ZRH flights will restart operation from 01 June 2011. According to our central reservation system (CRS) the flights won't discontinue operation by the end of October 2011 but continue with daily flights also during the winter flight schedule. So we guess that Delta Air Lines will start operating the Zurich - New York route on an all year round basis.
Altogether there are now four airlines flying a direct daily New York - Zurich connection. To see all direct flight connections between USA and Switzerland click here (german).