American Airlines has round-trip flights from Dallas (DFW) to Las Vegas (LAS) for $87-$89, NONSTOP. Flights from the start of October to mid-October. Departures on Monday, Tuesday, Wednesday, Saturday, and Sunday. These are mostly midweek. Origin/Destination reversible.
Note: Carry-on bag is allowed for free on American Airlines. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.
Note: We’re also seeing that Frontier has similarly priced fares on these dates. You’ll want to avoid those unless you like paying extra for bag fees and want smaller seats with less pitch.