Best Time to Fly FLL to SDF: On-Time Stats by Hour & Airline
Fort Lauderdale-Hollywood International → Louisville Muhammad Ali International
Data through July 2026 · Last updated October 18, 2026
297 flights were scheduled from Fort Lauderdale (FLL) to Louisville (SDF) in the last 12 months, and 62.7% of those that flew arrived on time, 14.9 points below the US average of 77.6%.
Among 2 airlines, Spirit Airlines led with 65.4% on time and Allegiant Air was last with 58.6%.
Over 24 months, Wednesday was the most reliable day (83% on time) and March the worst month (55%).
The cancellation rate was 4.4% (US average 1.8%).
FLL 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 |
|---|---|---|---|---|
| Spirit Airlines | 65.4% | 63 min | 7.1% | 168 |
| Allegiant Air | 58.6% | 88 min | 0.8% | 117 |
| Southwest Airlines | Limited data | 12 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly FLL to SDF
On-time arrival % by scheduled departure hour (local time), 723 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 90.7% | 0.0% | 43 |
| 7am–8am | Limited data | 22 | |
| 8am–9am | 84.4% | 4.3% | 47 |
| 9am–10am | 84.2% | 2.6% | 39 |
| 11am–12pm | Limited data | 29 | |
| 12pm–1pm | Limited data | 16 | |
| 1pm–2pm | Limited data | 8 | |
| 2pm–3pm | 83.3% | 0.0% | 90 |
| 3pm–4pm | 67.7% | 0.0% | 99 |
| 4pm–5pm | 60.9% | 2.3% | 131 |
| 5pm–6pm | 44.9% | 1.4% | 71 |
| 6pm–7pm | Limited data | 12 | |
| 7pm–8pm | 75.5% | 0.0% | 49 |
| 8pm–9pm | Limited data | 24 | |
| 9pm–10pm | 56.8% | 13.9% | 43 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on FLL 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 | 16 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 50.0% | -22.2 pts | 13.6% | 44 |
| Summer peak (Jun 15 - Aug 15) | 66.7% | -5.5 pts | 2.4% | 123 |
| All other days | 72.2% | — | 1.7% | 540 |
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).