Does anyone know any great flight deals I can find flying from NYC to Las Vegas at end of December?

Delta has $288 if you depart 31st and return on 6, 7, or 8th. This is the cheapest fitting the travel window you desribed ("end of December"). I used http://www.farecompare.com/ http://www.itasoftware.com/ and http://www.bookingbuddy.com/ to track down this fare for you.

Hi! Try

ATA

Flight 4227 / Flight 3314 operated by Southwest Airlines 1:24pm

New York, NY (LGA) 7:05pm

Las Vegas, NV (LAS) 8hrs 41min - 1 Stop

Change planes in Chicago, IL (MDW)

$335 per person (24 December returning 03 January)

Spirit Airlines

Flight 325 / 711 4:55pm

New York, NY (LGA) 9:45pm

Las Vegas, NV (LAS) 7hrs 50min - 1 Stop

Change planes in Detroit, MI (DTW)

$490 per person (return fare) 23 December 07 - 03 January

Source website: http://www.bookmyhotel.biz/airbooking.htm

Airtran Airways:

Departing: Thursday, December 27, 2007 $264.00 - Coach

New York, NY - LaGuardia (LGA) to Atlanta, GA (ATL) Flight 365

1:13 PM 3:43 PM

Atlanta, GA (ATL) to Las Vegas, NV (LAS) Flight 771

8:15 PM 9:54 PM

Returning: Wednesday, January 02, 2008 $264.00 - Coach

Las Vegas, NV (LAS) to Atlanta, GA (ATL) Flight 770

10:40 PM 5:32 AM (next day)

Atlanta, GA (ATL) to New York, NY - LaGuardia (LGA) Flight 382

7:10 AM 9:17 AM

---------------------------OR----------------------------

Spirit airways:

December 27,2007

LGA - LAS -- 325/711 4:55 pm 9:45 pm 1 stop $244.00

January 2, 2008

LAS - LGA -- 788/316 10:35 pm 8:59 am +1 1 stop $154.00

Try JetBlue Airways!