Best Time to Fly DFW to SDF: On-Time Stats by Hour & Airline
Dallas/Fort Worth International → Louisville Muhammad Ali International
Data through July 2026 · Last updated October 18, 2026
2,001 flights were scheduled from Dallas/Fort Worth (DFW) to Louisville (SDF) in the last 12 months, and 71.1% of those that flew arrived on time, 6.6 points below the US average of 77.6%.
Envoy Air was the most punctual of the 4 airlines on the route at 85.2%, while American Airlines trailed at 62.2%.
October has been the best month (82% on time) and Sunday the weakest day of the week (70%).
3.4% of flights were cancelled, versus 1.8% nationally.
DFW 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 |
|---|---|---|---|---|
| Envoy Air | 85.2% | 50 min | 2.1% | 339 |
| SkyWest Airlines | 85.2% | 45 min | 3.6% | 56 |
| PSA Airlines | 82.8% | 77 min | 5.5% | 419 |
| American Airlines | 62.2% | 88 min | 3.0% | 1,183 |
| Spirit Airlines | Limited data | 4 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DFW to SDF
On-time arrival % by scheduled departure hour (local time), 4,068 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 11 | |
| 7am–8am | 84.5% | 0.8% | 493 |
| 8am–9am | 79.2% | 1.3% | 151 |
| 9am–10am | 84.0% | 2.2% | 224 |
| 10am–11am | 86.0% | 4.1% | 507 |
| 11am–12pm | Limited data | 5 | |
| 12pm–1pm | 78.5% | 1.1% | 189 |
| 1pm–2pm | 71.5% | 5.6% | 160 |
| 2pm–3pm | 67.8% | 2.5% | 666 |
| 3pm–4pm | 42.2% | 6.6% | 76 |
| 4pm–5pm | 71.1% | 3.8% | 443 |
| 5pm–6pm | 67.5% | 8.8% | 91 |
| 6pm–7pm | 68.9% | 2.4% | 383 |
| 7pm–8pm | 50.3% | 2.1% | 186 |
| 8pm–9pm | 61.8% | 3.2% | 344 |
| 9pm–10pm | 69.4% | 3.6% | 139 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DFW 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) | 84.1% | +9.9 pts | 0.0% | 69 |
| Christmas & New Year (Dec 20 - Jan 3) | 71.3% | -2.9 pts | 0.0% | 150 |
| Summer peak (Jun 15 - Aug 15) | 66.8% | -7.4 pts | 2.3% | 749 |
| All other days | 74.2% | — | 3.3% | 3,100 |
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).