Route · BWI → SDF · 2020–2025 BTS data
Baltimore to Louisville
The BWI–SDF corridor (Baltimore, MD → Louisville, KY) runs behind the national average, served by 2 carriers across roughly 495 miles.
Data updated 2026-06-13
- 78.4%
- On-time
- -0.6 pts
- vs US avg
- 56 min
- Delay when late
- 4,770
- Flights
Cancelled
1.4%
Best Month
Sep 2025 88%
Worst Month
Jul 2024 59%
Distance
495 mi
Carriers
2
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 66 | 13 | 1 | 0 | WN |
| Nov 2025 | 73 | 11 | 5 | 0 | WN |
| Oct 2025 | 95 | 20 | 0 | 0 | WN |
| Sep 2025 | 77 | 9 | 0 | 0 | WN |
| Aug 2025 | 80 | 16 | 1 | 0 | WN |
| Jul 2025 | 81 | 31 | 8 | 0 | WN |
| Jun 2025 | 83 | 22 | 2 | 0 | WN |
| May 2025 | 80 | 19 | 0 | 0 | WN |
| Apr 2025 | 72 | 16 | 0 | 0 | WN |
| Mar 2025 | 62 | 9 | 1 | 0 | WN |
| Feb 2025 | 56 | 9 | 0 | 0 | WN |
| Jan 2025 | 63 | 10 | 3 | 0 | WN |
| Dec 2024 | 67 | 12 | 0 | 0 | WN |
| Nov 2024 | 73 | 10 | 0 | 0 | WN |
| Oct 2024 | 86 | 19 | 1 | 0 | WN |
| Sep 2024 | 77 | 14 | 0 | 0 | WN |
| Aug 2024 | 80 | 26 | 1 | 0 | WN |
| Jul 2024 | 80 | 33 | 0 | 0 | WN |
| Jun 2024 | 81 | 21 | 0 | 0 | WN |
| May 2024 | 80 | 21 | 0 | 0 | WN |
| Apr 2024 | 77 | 20 | 0 | 0 | WN |
| Mar 2024 | 75 | 16 | 0 | 0 | WN |
| Feb 2024 | 51 | 8 | 0 | 0 | WN |
| Jan 2024 | 68 | 16 | 2 | 0 | WN |
Cancellation Rate
1.4%
25 of 1,783 flights
Diversion Rate
0.0%
0 of 1,783 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BWI - Baltimore
Full on-time, delay-cause, and seasonal performance for Baltimore, MD.
Origin airport →SDF - Louisville
Full on-time, delay-cause, and seasonal performance for Louisville, KY.
Destination airport →Compare the two airports
See BWI 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 BWI–SDF.
Routes with a similar on-time rate
What the Data Says About BWI to SDF
The Baltimore to Louisville corridor (BWI to SDF) posts a 78.4% on-time rate on the lower edge of the average band, based on 4,770 tracked flights. Late flights run 56.4 minutes behind on average. 2 carriers cover the 495-mile route; over the last 24 months, 25 of 1,783 flights were cancelled (1.4%) and 0.0% diverted.
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 88% on-time, while Jul 2024 came in at just 59% - a 30-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from BWI to SDF? ▼
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Flight Guides
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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.