Best Time to Fly SDF to LAS: On-Time Stats by Hour & Airline
Louisville Muhammad Ali International → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
399 flights were scheduled from Louisville (SDF) to Las Vegas (LAS) in the last 12 months, and 85.0% of those that flew arrived on time, 7.4 points above the US average of 77.6%.
Among 2 airlines, Southwest Airlines led with 86.4% on time and Spirit Airlines was last with 72.7%.
Over 24 months, Wednesday was the most reliable day (87% on time) and September the worst month (74%).
The cancellation rate was 0.8% (US average 1.8%).
SDF to LAS 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 | 86.4% | 68 min | 0.8% | 365 |
| Spirit Airlines | 72.7% | 149 min | 0.0% | 33 |
| American Airlines | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SDF to LAS
On-time arrival % by scheduled departure hour (local time), 828 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 26 | |
| 6am–7am | 90.3% | 0.9% | 115 |
| 7am–8am | 92.4% | 0.0% | 92 |
| 8am–9am | 94.4% | 1.1% | 91 |
| 9am–10am | Limited data | 15 | |
| 10am–11am | 73.3% | 3.2% | 31 |
| 11am–12pm | Limited data | 22 | |
| 12pm–1pm | 73.0% | 0.0% | 37 |
| 1pm–2pm | 80.4% | 0.0% | 102 |
| 2pm–3pm | 88.0% | 0.0% | 50 |
| 3pm–4pm | 80.4% | 1.7% | 58 |
| 4pm–5pm | 77.9% | 0.0% | 68 |
| 5pm–6pm | 64.8% | 0.0% | 88 |
| 6pm–7pm | Limited data | 11 | |
| 7pm–8pm | Limited data | 10 | |
| 8pm–9pm | Limited data | 12 | |
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 LAS
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) | 86.7% | +3.5 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 79.0% | -4.2 pts | 0.8% | 134 |
| All other days | 83.1% | — | 0.6% | 652 |
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).