Frontier and Spirit have round-trip flights from Dallas (DFW) to Las Vegas (LAS) for $36-$40, NONSTOP. Flights January to March. Departures on Tuesday, Wednesday, and Saturday. Extended weekends available. Origin/Destination reversible.
Note: Fares do not include a free carry-on bag. Only a small personal item, like a Jansport City Scout backpack is free. You can avoid paying for seat selection if you accept the randomly assigned seat prior to boarding.