Las Vegas (LAS) to Houston (IAH) flights
United Airlines, Frontier Airlines fly nonstop from Harry Reid International Airport to George Bush Intercontinental Airport, with about 59 flights a week in July 2026. The 1,222-mile flight takes about 3h 1m gate to gate.
- Distance
- 1,222 mi · 1,967 km
- Flight time
- 3h 1m
- Airlines
- 2
- Seats filled
- 82%
Airlines flying LAS to IAH
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 46 | Boeing 737 MAX 9, Boeing 737-900ER, Boeing 737-900 | 375,273 | 3h 0m |
| Frontier Airlines | 13 | Airbus A321, Airbus A320neo, Airbus A320-100/200 | 66,309 | 3h 12m |
| Spirit AirlinesCeased operations 2026-05-02 | n/a | Airbus A320-100/200, Airbus A321, Airbus A320neo | 72,624 | 2h 57m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
LAS to IAH flight schedule
14 flight numbers flew this route in August 2026, 8 of them almost daily. The first usually leaves at 12:59am and the last at 4:59pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| UA 2009United Airlines | 12:59am | 6:00am | 21 | 87% |
| UA 2840United Airlines | 12:59am | 5:59am | 10 | 80% |
| UA 2608United Airlines | 6:00am | 11:09am | 30 | 95% |
| F9 1490Frontier Airlines | 7:36am | 12:58pm | 31 | 85% |
| UA 1994United Airlines | 7:45am | 12:54pm | 21 | 100% |
| UA 1181United Airlines | 8:00am | 1:07pm | 10 | 90% |
| UA 1956United Airlines | 10:05am | 3:19pm | 21 | 95% |
| UA 1711United Airlines | 10:25am | 3:40pm | 10 | 90% |
| UA 1627United Airlines | 12:11pm | 5:25pm | 21 | 70% |
| UA 2492United Airlines | 12:14pm | 5:25pm | 10 | 84% |
| F9 1966Frontier Airlines | 2:28pm | 7:58pm | 31 | 70% |
| UA 2741United Airlines | 3:45pm | 8:55pm | 31 | 72% |
| UA 2449United Airlines | 4:43pm | 9:57pm | 8 | 78% |
| UA 2765United Airlines | 4:59pm | 10:13pm | 8 | n/a |
Is LAS to IAH on time?
From September 2025 to August 2026, 84% of 3,411 flights arrived within 15 minutes of schedule and 0.9% were cancelled. Flights leaving around 6am were the most punctual (95%), those around 2pm the least (70%). Most delay time was caused by late-arriving aircraft (37%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 2,596 | 86% | 11 min | 0.3% |
| Frontier Airlines | 409 | 78% | 15 min | 2% |
| Spirit Airlines | 406 | 80% | 23 min | 3% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 12am to 1am | 421 | 91% | |
| 1am to 2am | 69 | 71% | |
| 6am to 7am | 346 | 95% | |
| 7am to 8am | 145 | 89% | |
| 8am to 9am | 379 | 89% | |
| 10am to 11am | 438 | 89% | |
| 11am to 12pm | 90 | 79% | |
| 12pm to 1pm | 372 | 82% | |
| 1pm to 2pm | 156 | 71% | |
| 2pm to 3pm | 234 | 70% | |
| 3pm to 4pm | 363 | 77% | |
| 4pm to 5pm | 134 | 77% | |
| 6pm to 7pm | 129 | 88% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 282 | 41,705 | |
| September 2025 | 255 | 40,272 | |
| October 2025 | 292 | 44,791 | |
| November 2025 | 313 | 47,506 | |
| December 2025 | 309 | 43,531 | |
| January 2026 | 279 | 40,550 | |
| February 2026 | 288 | 43,115 | |
| March 2026 | 314 | 48,779 | |
| April 2026 | 289 | 42,850 | |
| May 2026 | 261 | 41,390 | |
| June 2026 | 256 | 40,990 | |
| July 2026 | 261 | 39,188 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.