Houston (IAH) to Las Vegas (LAS): 1,220 miles (1,963 km) great-circle, about 2h 55m nonstop by our estimate. Cheapest fare observed: $145 round-trip on Frontier, nonstop, departing May 18, 2026.
$145 round-trip, Frontier F91965, departing 2026-05-18 at 21:05, returning 2026-05-20. The recorded itinerary left on a Monday, returning on a Wednesday 2 nights later; the fare was observed 23 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $145, it ranked 9th of the 30 round-trip fares we recorded from IAH (median $247). That is 11.9 cents per great-circle mile (round-trip price over one-way distance), below the IAH median of 17.9 cents across 30 round-trip routes.
Routes from IAH of similar length: San Salvador (1,211 mi) at $252 and Baltimore (1,234 mi) at $107.
Frontier had the cheapest fare on 12 of 30 IAH routes. It is the 15th longest of the 30 routes we track from IAH.
Of 32 departure airports with a fare to Las Vegas, Houston (IAH) ranked 9th at $145. Lowest: $51 from San Francisco (SFO); highest: $465 from Los Cabos (SJD); 16 nonstop. Cheapest-fare airlines (routes): Frontier (24), Alaska Airlines (2), Air Canada (1), American Airlines (1), JetBlue (1) and Southwest (1), plus 2 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Chicago, America/Los_Angeles; flight time is our estimate.