Phoenix (PHX) to Louisville (SDF): On-Time Performance
Data through July 2026
Phoenix (PHX) to Louisville (SDF) effectively runs on two schedules. In August 2025, 97% of arrivals were on time; in April 2026 that fell to 49% — a 48-point seasonal swing. Across the full period the route averages 74% on-time against a national 78%. Morning departures also hold up better than evening ones (82% vs 60%), which matters most in the rough months.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 1.0
- last 12 months
- Duration
- 3h 20m
- scheduled
- Distance
- 1,506 mi
Monthly on-time trend
Best time to fly from PHX to SDF
Aim for departures around 8 a.m. (85% on-time); avoid 4 p.m. departures (52%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 15 min |
| Tuesday | 69% | 15 min |
| Wednesday | 75% | 10 min |
| Thursday | 72% | 17 min |
| Friday | 75% | 15 min |
| Saturdaybest | 78% | 10 min |
| Sunday | 74% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft45%
- Airline operations44%
- National airspace system11%
- Security1%
Frequently asked questions
- How often are flights from PHX to SDF delayed?
- 26% of PHX–SDF flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 14 minutes.
- What is the best time of day to fly from PHX to SDF?
- Departures around 8 a.m. have the best record (85% on-time), while departures around 4 p.m. have the worst (52%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PHX to SDF?
- The scheduled PHX–SDF flight time averages 3h 20m over 1,506 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are PHX to SDF flights cancelled?
- 0.4% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from PHX to SDF?
- April 2026 was the roughest month in this dataset, with only 49% of arrivals on time. The best was August 2025 at 97%. If your dates are flexible, that 48-point gap is worth planning around.
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Based on 779 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.