Louisville (SDF) to Phoenix (PHX): On-Time Performance
Data through July 2026
Louisville (SDF) to Phoenix (PHX) effectively runs on two schedules. In January 2026, 97% of arrivals were on time; in September 2025 that fell to 70% — a 27-point seasonal swing. Across the full period the route averages 82% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 80%), which matters most in the rough months.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 1.0
- last 12 months
- Duration
- 3h 57m
- scheduled
- Distance
- 1,506 mi
Monthly on-time trend
Best time to fly from SDF to PHX
Aim for departures around 7 a.m. (96% on-time); avoid 2 p.m. departures (68%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 82% | 9 min |
| Tuesday | 82% | 10 min |
| Wednesday | 82% | 14 min |
| Thursday | 81% | 12 min |
| Friday | 77% | 12 min |
| Saturday | 85% | 11 min |
| Sundaybest | 86% | 9 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft49%
- Airline operations31%
- National airspace system15%
- Weather5%
Frequently asked questions
- How often are flights from SDF to PHX delayed?
- 18% of SDF–PHX 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 11 minutes.
- What is the best time of day to fly from SDF to PHX?
- Departures around 7 a.m. have the best record (96% on-time), while departures around 2 p.m. have the worst (68%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SDF to PHX?
- The scheduled SDF–PHX flight time averages 3h 57m over 1,506 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are SDF to PHX flights cancelled?
- 0.6% 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 SDF to PHX?
- September 2025 was the roughest month in this dataset, with only 70% of arrivals on time. The best was January 2026 at 97%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 780 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.