Best Time to Fly PHX to SDF: On-Time Stats by Hour & Airline
Phoenix Sky Harbor International → Louisville Muhammad Ali International
Data through July 2026 · Last updated October 18, 2026
372 flights were scheduled from Phoenix (PHX) to Louisville (SDF) in the last 12 months, and 73.4% of those that flew arrived on time, 4.3 points below the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (78% on time) and April the worst month (58%).
The cancellation rate was 0.5% (US average 1.8%).
PHX 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 | 73.2% | 43 min | 0.5% | 369 |
| American Airlines | Limited data | 3 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHX to SDF
On-time arrival % by scheduled departure hour (local time), 748 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | Limited data | 19 | |
| 8am–9am | 85.1% | 0.0% | 47 |
| 9am–10am | 83.9% | 0.0% | 144 |
| 10am–11am | 79.0% | 0.0% | 38 |
| 11am–12pm | 79.6% | 2.0% | 50 |
| 12pm–1pm | 80.8% | 0.0% | 79 |
| 1pm–2pm | 75.3% | 1.2% | 82 |
| 2pm–3pm | 77.7% | 0.0% | 85 |
| 3pm–4pm | 69.2% | 0.0% | 39 |
| 4pm–5pm | Limited data | 27 | |
| 5pm–6pm | 57.0% | 1.2% | 80 |
| 6pm–7pm | 64.3% | 0.0% | 42 |
| 7pm–8pm | Limited data | 3 | |
| 8pm–9pm | Limited data | 13 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PHX 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) | 56.7% | -17.5 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 83.7% | +9.5 pts | 0.0% | 124 |
| All other days | 74.2% | — | 0.5% | 582 |
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).