Best Time to Fly SDF to PHX: On-Time Stats by Hour & Airline
Louisville Muhammad Ali International → Phoenix Sky Harbor International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.5% of Louisville (SDF) to Phoenix (PHX) flights arrived on time (372 scheduled flights). That is 4.9 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
January has been the best month (97% on time) and Friday the weakest day of the week (77%).
1.1% of flights were cancelled, versus 1.8% nationally.
SDF to PHX 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 | 82.9% | 47 min | 1.1% | 369 |
| American Airlines | Limited data | 3 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SDF to PHX
On-time arrival % by scheduled departure hour (local time), 749 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 8 | |
| 6am–7am | 93.1% | 0.0% | 58 |
| 7am–8am | 95.9% | 2.0% | 50 |
| 8am–9am | 83.3% | 0.0% | 30 |
| 10am–11am | 90.9% | 0.0% | 56 |
| 11am–12pm | 86.8% | 1.3% | 77 |
| 12pm–1pm | 79.5% | 0.8% | 123 |
| 1pm–2pm | Limited data | 5 | |
| 2pm–3pm | 68.3% | 0.0% | 80 |
| 3pm–4pm | 76.7% | 0.0% | 30 |
| 4pm–5pm | 79.3% | 1.7% | 59 |
| 5pm–6pm | 87.0% | 1.0% | 103 |
| 6pm–7pm | 72.3% | 0.0% | 47 |
| 7pm–8pm | Limited data | 17 | |
| 8pm–9pm | Limited data | 6 | |
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 PHX
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 | 30 | ||
| Summer peak (Jun 15 - Aug 15) | 85.5% | +3.0 pts | 0.0% | 124 |
| All other days | 82.4% | — | 0.9% | 583 |
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).