Great question - CNS to JFK just means Cairns Airport to New York John F Kennedy Intl Airport. Now you’ll know what these unique codes when you look for flights! While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Newark Airport (EWR), New York LaGuardia Airport (LGA), New Windsor Stewart Airport (SWF), New York Skyports SPB Airport (NYS).