Best Time to Fly HOU to DEN: On-Time Stats by Hour & Airline
William P Hobby → Denver International
Data through July 2026 · Last updated October 18, 2026
2,380 flights were scheduled from Houston (HOU) to Denver (DEN) in the last 12 months, and 77.8% of those that flew arrived on time, in line with the US 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 (77%).
0.3% of flights were cancelled, versus 1.8% nationally.
HOU to DEN 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 | 77.8% | 53 min | 0.3% | 2,380 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly HOU to DEN
On-time arrival % by scheduled departure hour (local time), 4,821 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 96.2% | 0.0% | 373 |
| 6am–7am | 96.4% | 0.0% | 279 |
| 7am–8am | 89.3% | 0.8% | 246 |
| 8am–9am | 83.2% | 1.1% | 363 |
| 9am–10am | 87.2% | 0.4% | 228 |
| 10am–11am | 83.8% | 1.2% | 344 |
| 11am–12pm | 82.3% | 1.0% | 200 |
| 12pm–1pm | 74.4% | 0.9% | 333 |
| 1pm–2pm | 76.4% | 1.8% | 169 |
| 2pm–3pm | 77.5% | 0.4% | 250 |
| 3pm–4pm | 65.5% | 1.1% | 177 |
| 4pm–5pm | 67.4% | 0.3% | 311 |
| 5pm–6pm | 65.4% | 0.0% | 205 |
| 6pm–7pm | 63.2% | 0.0% | 291 |
| 7pm–8pm | 72.6% | 0.0% | 267 |
| 8pm–9pm | 82.4% | 0.4% | 257 |
| 9pm–10pm | 74.7% | 0.4% | 266 |
| 10pm–11pm | 75.5% | 1.5% | 261 |
| 11pm–12am | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on HOU to DEN
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) | 76.6% | -3.9 pts | 0.0% | 107 |
| Christmas & New Year (Dec 20 - Jan 3) | 79.8% | -0.8 pts | 0.0% | 242 |
| Summer peak (Jun 15 - Aug 15) | 73.5% | -7.0 pts | 0.2% | 849 |
| All other days | 80.5% | — | 0.8% | 3,623 |
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).