Best Time to Fly SDF to DTW: On-Time Stats by Hour & Airline
Louisville Muhammad Ali International → Detroit Metro Wayne County
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.9% of Louisville (SDF) to Detroit (DTW) flights arrived on time (1,128 scheduled flights). That is 5.3 points above the national average of 77.6%.
Among 2 airlines, Republic Airways led with 89.7% on time and SkyWest Airlines was last with 79.0%.
Over 24 months, Tuesday was the most reliable day (88% on time) and March the worst month (77%).
The cancellation rate was 0.9% (US average 1.8%).
SDF to DTW 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 |
|---|---|---|---|---|
| Republic Airways | 89.7% | 78 min | 0.2% | 408 |
| SkyWest Airlines | 79.0% | 130 min | 1.3% | 699 |
| Spirit Airlines | Limited data | 10 | ||
| Delta Air Lines | Limited data | 11 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SDF to DTW
On-time arrival % by scheduled departure hour (local time), 2,402 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 1 | |
| 7am–8am | 90.7% | 0.6% | 724 |
| 8am–9am | Limited data | 5 | |
| 9am–10am | Limited data | 2 | |
| 10am–11am | 84.2% | 0.7% | 593 |
| 11am–12pm | Limited data | 8 | |
| 12pm–1pm | Limited data | 3 | |
| 1pm–2pm | 91.0% | 0.7% | 148 |
| 2pm–3pm | 83.3% | 0.7% | 278 |
| 3pm–4pm | 79.3% | 1.2% | 83 |
| 5pm–6pm | 60.0% | 1.4% | 71 |
| 6pm–7pm | 81.8% | 1.1% | 366 |
| 7pm–8pm | 79.2% | 0.0% | 120 |
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 DTW
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) | 88.9% | +3.4 pts | 0.0% | 54 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.8% | -3.7 pts | 1.3% | 78 |
| Summer peak (Jun 15 - Aug 15) | 81.8% | -3.7 pts | 0.7% | 404 |
| All other days | 85.5% | — | 0.7% | 1,866 |
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).