[05/24/2019 @ 05:48 PM] Most Saturday departures are gone.
American Airlines has round-trip flights from Houston (IAH) to Las Vegas (LAS) for $106-$128 with a connection. August to December. No Friday departures. 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: United has flights for a bit cheaper, nonstop, but the fare doesn’t allow for a free carry-on bag.