Route · DCA → SDF · 2020–2025 BTS data
Washington to Louisville
The DCA–SDF corridor (Washington, DC → Louisville, KY) runs ahead of the national average, served by 10 carriers across roughly 474 miles.
Data updated 2026-06-13
- 82.1%
- On-time
- +3.1 pts
- vs US avg
- 74 min
- Delay when late
- 5,135
- Flights
Cancelled
4.7%
Best Month
Oct 2024 92%
Worst Month
Dec 2025 59%
Distance
474 mi
Carriers
10
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 63 | 26 | 5 | 0 | YX,OH |
| Nov 2025 | 84 | 23 | 5 | 0 | OH,YX |
| Oct 2025 | 93 | 12 | 0 | 0 | OH,YX |
| Sep 2025 | 90 | 18 | 0 | 0 | OH,YX |
| Aug 2025 | 88 | 26 | 5 | 0 | YX,OH |
| Jul 2025 | 88 | 25 | 22 | 1 | OH,YX |
| Jun 2025 | 86 | 34 | 12 | 0 | OH,YX |
| May 2025 | 90 | 29 | 5 | 0 | AA,OH,YX |
| Apr 2025 | 78 | 23 | 0 | 0 | OH,YX |
| Mar 2025 | 88 | 28 | 3 | 1 | OH,YX |
| Feb 2025 | 81 | 30 | 13 | 0 | OH,YX |
| Jan 2025 | 82 | 23 | 8 | 0 | OH,YX |
| Dec 2024 | 67 | 10 | 3 | 0 | OH,YX |
| Nov 2024 | 83 | 7 | 0 | 0 | YX,OH |
| Oct 2024 | 89 | 7 | 0 | 0 | MQ,YX,OH |
| Sep 2024 | 86 | 7 | 1 | 0 | YX,OH,MQ |
| Aug 2024 | 87 | 23 | 3 | 0 | YX,OH |
| Jul 2024 | 84 | 30 | 3 | 0 | OH,YX |
| Jun 2024 | 81 | 13 | 0 | 0 | OH,YX |
| May 2024 | 90 | 22 | 0 | 0 | AA,MQ,OH,YX |
| Apr 2024 | 82 | 11 | 1 | 0 | OH,YX |
| Mar 2024 | 88 | 12 | 0 | 0 | OH,YX |
| Feb 2024 | 81 | 8 | 0 | 1 | OH,YX |
| Jan 2024 | 80 | 10 | 6 | 0 | YX,OH |
Cancellation Rate
4.7%
95 of 2,009 flights
Diversion Rate
0.1%
3 of 2,009 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DCA - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
Origin airport →SDF - Louisville
Full on-time, delay-cause, and seasonal performance for Louisville, KY.
Destination airport →Compare the two airports
See DCA 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 DCA–SDF.
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What the Data Says About DCA to SDF
Bureau of Transportation Statistics records show Washington to Louisville (DCA to SDF) running a 82.1% on-time rate over 5,135 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 73.6 minutes. The 474-mile corridor is served by 10 carriers, and over the last 24 months 4.7% of 2,009 flights were cancelled, 0.1% diverted.
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 92% on-time, while Dec 2025 came in at just 59% - a 33-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from DCA 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.