Route
DTW → SDF
Detroit Metropolitan Wayne County Airport Louisville Muhammad Ali International Airport
306 miles
Return route SDF → DTW →
How punctual is this route?
- On-time arrivals
- 77.5%
- Less than 15 minutes late
- Cancelled
- 1.5%
- Of scheduled flights
- Average delay when late
- 90 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,089
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 53%
- Late-arriving aircraft 20%
- Extreme weather 18%
- Air traffic control & airport 10%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 95.9% | 73 |
| October 2025 | 90.5% | 105 |
| November 2025 | 81.9% | 107 |
| December 2025 | 61.6% | 88 |
| January 2026 | 65.8% | 81 |
| February 2026 | 72.4% | 76 |
| March 2026 | 65.7% | 108 |
| April 2026 | 80.7% | 116 |
| May 2026 | 80.5% | 118 |
| June 2026 | 77.5% | 71 |
| July 2026 | 83.6% | 62 |
| August 2026 | 73.2% | 84 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| SkyWest Airlines | 670 | 78.0% | 1.6% | 89 min |
| Republic Airways | 408 | 77.6% | 1.2% | 92 min |
| Delta Air Lines | 11 | 45.5% | 0.0% | 90 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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