Route · DTW → SDF · 2020–2025 BTS data
Detroit to Louisville
The DTW–SDF corridor (Detroit, MI → Louisville, KY) runs ahead of the national average, served by 18 carriers across roughly 306 miles.
Data updated 2026-06-13
- 84.6%
- On-time
- +5.6 pts
- vs US avg
- 80 min
- Delay when late
- 6,360
- Flights
Cancelled
0.5%
Best Month
Sep 2025 96%
Worst Month
Dec 2025 63%
Distance
306 mi
Carriers
18
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 88 | 33 | 2 | 0 | YX,OO |
| Nov 2025 | 107 | 19 | 2 | 0 | OO,YX |
| Oct 2025 | 105 | 10 | 0 | 0 | OO,YX |
| Sep 2025 | 73 | 3 | 0 | 0 | OO,YX |
| Aug 2025 | 123 | 20 | 0 | 0 | OO,YX,NK |
| Jul 2025 | 124 | 39 | 1 | 0 | OO,YX,NK |
| Jun 2025 | 119 | 28 | 1 | 0 | NK,OO,YX |
| May 2025 | 118 | 19 | 0 | 0 | OO,YX,DL |
| Apr 2025 | 103 | 16 | 0 | 0 | OO,YX |
| Mar 2025 | 88 | 12 | 0 | 0 | OO,YX |
| Feb 2025 | 78 | 13 | 0 | 0 | YX |
| Jan 2025 | 88 | 20 | 4 | 0 | OO,YX |
| Dec 2024 | 106 | 13 | 0 | 0 | OO,YX |
| Nov 2024 | 109 | 11 | 0 | 0 | OO,YX |
| Oct 2024 | 114 | 6 | 0 | 0 | OO,YX,9E |
| Sep 2024 | 110 | 13 | 0 | 0 | YX,OO |
| Aug 2024 | 116 | 29 | 3 | 1 | YX,9E,OO |
| Jul 2024 | 116 | 26 | 0 | 0 | OO,YX |
| Jun 2024 | 114 | 25 | 0 | 0 | OO,YX |
| May 2024 | 119 | 20 | 0 | 2 | 9E,OO,YX |
| Apr 2024 | 106 | 12 | 0 | 0 | 9E,OO,YX |
| Mar 2024 | 86 | 7 | 0 | 1 | YX,OO |
| Feb 2024 | 69 | 5 | 0 | 0 | 9E,OO,YX |
| Jan 2024 | 70 | 21 | 0 | 0 | 9E,YX,OO |
Cancellation Rate
0.5%
13 of 2,449 flights
Diversion Rate
0.2%
4 of 2,449 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DTW - Detroit
Full on-time, delay-cause, and seasonal performance for Detroit, MI.
Origin airport →SDF - Louisville
Full on-time, delay-cause, and seasonal performance for Louisville, KY.
Destination airport →Compare the two airports
See DTW and SDF side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to DTW–SDF.
Routes with a similar on-time rate
What the Data Says About DTW to SDF
Bureau of Transportation Statistics records show Detroit to Louisville (DTW to SDF) running a 84.6% on-time rate over 6,360 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 80.3 minutes. The 306-mile corridor is served by 18 carriers, and over the last 24 months 0.5% of 2,449 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 96% on-time, while Dec 2025 came in at just 63% - a 33-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from DTW to SDF? ▼
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.