William P Hobby (HOU) Delays and On-Time Departures
Houston, TX · ranked 307th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
73.4% of the 53,894 flights scheduled to depart Houston (HOU) in the last 12 months left on time, 4.1 points below the US average of 77.4%.
That ranks 307th of 333 US airports tracked on this site, with 0.9% of departures cancelled.
Delta Air Lines was the most punctual airline here, with 83.8% of departures on time.
September has been the best month (85% on time) and Sunday the weakest day of the week (72%).
Best time of day to fly out of Houston (HOU)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 1 | |
| 5am–6am | 94.5% | 0.7% | 3,919 |
| 6am–7am | 95.5% | 1.3% | 5,068 |
| 7am–8am | 91.9% | 0.7% | 5,144 |
| 8am–9am | 89.8% | 0.9% | 10,172 |
| 9am–10am | 88.7% | 1.0% | 4,928 |
| 10am–11am | 84.4% | 1.4% | 7,755 |
| 11am–12pm | 81.2% | 1.2% | 6,743 |
| 12pm–1pm | 74.7% | 1.2% | 5,511 |
| 1pm–2pm | 75.8% | 1.0% | 5,785 |
| 2pm–3pm | 68.0% | 0.7% | 7,040 |
| 3pm–4pm | 68.1% | 0.6% | 5,526 |
| 4pm–5pm | 70.2% | 0.8% | 5,736 |
| 5pm–6pm | 65.4% | 0.8% | 4,913 |
| 6pm–7pm | 68.2% | 1.6% | 7,578 |
| 7pm–8pm | 60.5% | 0.6% | 5,423 |
| 8pm–9pm | 64.0% | 1.2% | 8,704 |
| 9pm–10pm | 62.8% | 0.6% | 4,557 |
| 10pm–11pm | 59.3% | 0.8% | 4,628 |
| 11pm–12am | Limited data | 1 | |
Airlines at HOU ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Delta Air Lines | 83.8% | 84.9% | 1.9% | 1,398 |
| Envoy Air | 81.9% | 80.9% | 2.6% | 936 |
| Allegiant Air | 76.9% | 73.7% | 0.0% | 225 |
| PSA Airlines | 76.5% | 77.1% | 5.5% | 658 |
| Southwest Airlines | 72.9% | 76.6% | 0.7% | 50,270 |
| SkyWest Airlines | 71.1% | 70.8% | 5.7% | 407 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of HOU
On-time departures by day, 24 months.
Best month to fly out of HOU
On-time departures by month, 24 months.
Holiday travel at Houston (HOU)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 81.7% | +3.8 pts | 0.3% | 2,159 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.0% | -4.9 pts | 0.6% | 4,640 |
| Summer peak (Jun 15 - Aug 15) | 66.9% | -11.0 pts | 0.8% | 19,586 |
| All other days | 77.9% | — | 1.1% | 82,747 |
Monthly on-time departure trend at HOU
On-time departure % each month, with the 12-month US average for reference.
Routes from Houston (HOU)
Every route from HOU with its own page, by number of flights (last 12 months, on-time arrivals).