On another thread I posted recently that a search for TUS-EWR (That's Tucson-New York's Newark Liberty International Airport) yielded a bunch of 3 segment connections as well as a 2 segment NW (Northwest Airlines) codeshare.

A TUS-EWR search today yields a list topped with a 1-stop TUS-JFK (Thats Tucson-John F Kennedy Airport somewhere in New York) flight.