United and American Airlines has round-trip flights from Houston (IAH) to Las Vegas (LAS) for $101-$120, NONSTOP or with a connection. Flights from March to July and also August to November. None in June. Mostly on Tuesdays, Wednesdays, and Saturdays. Holiday Blackouts.
Note: United fare is NONSTOP, but Carry-on bag is NOT allowed for free. Only a tiny personal item (like a laptop bag) is allowed for free. United’s personal item allowance of (9in x 10in x 17in) is smaller than most other airlines. You can avoid seat selection fees if you accept a randomly assigned seat at the gate. If you have the United MileagePlus credit card you should be able to avoid bag fees with the “free checked-bag” perk.
Note: American fare has a connection, but a carry-on bag is allowed for free. Seat is randomly assigned at the gate.
Read More Cheap Flights: Houston to Las Vegas $101-$119 r/t – United / American