Best Time to Fly LAS to HOU: On-Time Stats by Hour & Airline
Harry Reid International → William P Hobby
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 73.2% of Las Vegas (LAS) to Houston (HOU) flights arrived on time (2,021 scheduled flights). That is 4.5 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
January has been the best month (87% on time) and Thursday the weakest day of the week (72%).
0.4% of flights were cancelled, versus 1.8% nationally.
LAS to HOU on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 73.2% | 47 min | 0.4% | 2,021 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAS to HOU
On-time arrival % by scheduled departure hour (local time), 4,091 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.5% | 0.3% | 677 |
| 6am–7am | 92.3% | 0.0% | 104 |
| 7am–8am | 88.7% | 0.3% | 391 |
| 8am–9am | 86.4% | 0.4% | 280 |
| 9am–10am | 83.1% | 0.0% | 131 |
| 10am–11am | 83.5% | 0.0% | 146 |
| 11am–12pm | 82.9% | 0.0% | 148 |
| 12pm–1pm | 75.8% | 0.3% | 288 |
| 1pm–2pm | 69.6% | 0.0% | 172 |
| 2pm–3pm | 51.6% | 0.9% | 219 |
| 3pm–4pm | 69.3% | 0.3% | 289 |
| 4pm–5pm | 70.1% | 2.5% | 163 |
| 5pm–6pm | 70.6% | 0.5% | 222 |
| 6pm–7pm | 57.3% | 0.9% | 437 |
| 7pm–8pm | 67.0% | 0.5% | 220 |
| 8pm–9pm | 60.3% | 0.8% | 117 |
| 9pm–10pm | Limited data | 3 | |
| 11pm–12am | 81.0% | 0.0% | 84 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LAS to HOU
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 84.8% | +5.4 pts | 0.0% | 79 |
| Christmas & New Year (Dec 20 - Jan 3) | 68.4% | -11.0 pts | 0.0% | 174 |
| Summer peak (Jun 15 - Aug 15) | 67.0% | -12.4 pts | 0.6% | 701 |
| All other days | 79.4% | — | 0.5% | 3,137 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).