Best Time to Fly SDF to HOU: On-Time Stats by Hour & Airline
Louisville Muhammad Ali International → William P Hobby
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.8% of Louisville (SDF) to Houston (HOU) flights arrived on time (283 scheduled flights). That is 3.2 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
March has been the best month (91% on time) and Saturday the weakest day of the week (76%).
0.7% of flights were cancelled, versus 1.8% nationally.
SDF 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 | 80.8% | 61 min | 0.7% | 283 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SDF to HOU
On-time arrival % by scheduled departure hour (local time), 594 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 1 | |
| 6am–7am | 93.8% | 0.0% | 32 |
| 7am–8am | Limited data | 1 | |
| 9am–10am | Limited data | 4 | |
| 10am–11am | 92.5% | 0.0% | 40 |
| 11am–12pm | 90.0% | 0.0% | 41 |
| 12pm–1pm | 85.6% | 0.9% | 112 |
| 1pm–2pm | 84.8% | 2.1% | 47 |
| 2pm–3pm | 72.0% | 0.0% | 50 |
| 3pm–4pm | 73.6% | 0.0% | 87 |
| 4pm–5pm | Limited data | 6 | |
| 5pm–6pm | Limited data | 18 | |
| 6pm–7pm | 81.1% | 1.3% | 75 |
| 7pm–8pm | 78.0% | 2.4% | 42 |
| 8pm–9pm | 73.7% | 0.0% | 38 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SDF 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) | Limited data | 12 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 22 | ||
| Summer peak (Jun 15 - Aug 15) | 75.6% | -8.3 pts | 0.0% | 120 |
| All other days | 83.9% | — | 0.9% | 440 |
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).