If you want a cheap flight from Las Vegas to New York, you've got one airlines to choose from.
You can use the filters on your search to see more flights and find cheaper rates – New York has more than one airport. So if you don't need to fly into New York La Guardia Airport, it's worth checking your other options. The 3603 km flight usually takes about 8 hrs.
There are about five flights to or via New York every week, so you have plenty of options. Keep your eye out for flights
If you're planning on going to New York during this time, you could take a look at other airport options. Or you could try to get a last-minute bargain.