Best Time to Fly HOU to SDF: On-Time Stats by Hour & Airline
William P Hobby → Louisville Muhammad Ali International
Data through July 2026 · Last updated October 18, 2026
284 flights were scheduled from Houston (HOU) to Louisville (SDF) in the last 12 months, and 70.9% of those that flew arrived on time, 6.7 points below the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (82% on time) and June the worst month (63%).
The cancellation rate was 0.7% (US average 1.8%).
HOU to SDF 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 | 70.9% | 47 min | 0.7% | 284 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly HOU to SDF
On-time arrival % by scheduled departure hour (local time), 595 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | Limited data | 1 | |
| 10am–11am | 75.5% | 2.0% | 50 |
| 11am–12pm | 84.9% | 0.0% | 119 |
| 12pm–1pm | 85.4% | 0.0% | 41 |
| 1pm–2pm | 75.9% | 0.6% | 167 |
| 2pm–3pm | 62.9% | 1.0% | 98 |
| 3pm–4pm | 75.8% | 0.0% | 33 |
| 4pm–5pm | 77.4% | 0.0% | 53 |
| 5pm–6pm | Limited data | 13 | |
| 6pm–7pm | Limited data | 16 | |
| 8pm–9pm | Limited data | 4 | |
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 SDF
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) | 68.3% | -11.4 pts | 0.0% | 120 |
| All other days | 79.7% | — | 0.5% | 441 |
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).