Route · SDF → BWI · 2020–2025 BTS data
Louisville to Baltimore
The SDF–BWI corridor (Louisville, KY → Baltimore, MD) runs ahead of the national average, served by 2 carriers across roughly 495 miles.
Data updated 2026-06-13
- 85.7%
- On-time
- +6.7 pts
- vs US avg
- 66 min
- Delay when late
- 4,829
- Flights
Cancelled
1.4%
Best Month
Mar 2024 92%
Worst Month
Jul 2024 68%
Distance
495 mi
Carriers
2
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 66 | 9 | 1 | 0 | WN |
| Nov 2025 | 74 | 6 | 4 | 0 | WN |
| Oct 2025 | 95 | 13 | 0 | 0 | WN |
| Sep 2025 | 77 | 10 | 0 | 0 | WN |
| Aug 2025 | 80 | 11 | 1 | 0 | WN |
| Jul 2025 | 81 | 21 | 5 | 0 | WN |
| Jun 2025 | 82 | 15 | 3 | 0 | WN |
| May 2025 | 80 | 11 | 1 | 1 | WN |
| Apr 2025 | 72 | 10 | 0 | 0 | WN |
| Mar 2025 | 62 | 7 | 1 | 0 | WN |
| Feb 2025 | 56 | 9 | 0 | 0 | WN |
| Jan 2025 | 63 | 7 | 5 | 1 | WN |
| Dec 2024 | 67 | 10 | 0 | 0 | WN |
| Nov 2024 | 74 | 6 | 0 | 0 | WN |
| Oct 2024 | 86 | 9 | 1 | 0 | WN |
| Sep 2024 | 77 | 9 | 1 | 0 | WN |
| Aug 2024 | 81 | 14 | 1 | 0 | WN |
| Jul 2024 | 80 | 26 | 0 | 0 | WN |
| Jun 2024 | 80 | 15 | 0 | 0 | WN |
| May 2024 | 80 | 16 | 0 | 1 | WN |
| Apr 2024 | 77 | 12 | 0 | 0 | WN |
| Mar 2024 | 77 | 6 | 0 | 0 | WN |
| Feb 2024 | 58 | 5 | 0 | 0 | WN |
| Jan 2024 | 68 | 13 | 1 | 0 | WN |
Cancellation Rate
1.4%
25 of 1,793 flights
Diversion Rate
0.2%
3 of 1,793 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SDF - Louisville
Full on-time, delay-cause, and seasonal performance for Louisville, KY.
Origin airport →BWI - Baltimore
Full on-time, delay-cause, and seasonal performance for Baltimore, MD.
Destination airport →Compare the two airports
See SDF and BWI side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SDF–BWI.
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What the Data Says About SDF to BWI
Louisville to Baltimore (SDF to BWI) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.7% on-time rate across 4,829 flights, with delays that do happen averaging 66.1 minutes. The corridor runs roughly 495 miles and is served by 2 carriers. Over the most recent 24 months, 25 of 1,793 flights were cancelled (1.4%) and 3 diverted (0.2%).
The monthly split is wide on this route: Mar 2024 posted the strongest performance at 92% on-time, while Jul 2024 came in at just 68% - a 25-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from SDF to BWI? ▼
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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.