Route · EWR → SDF · 2020–2025 BTS data
Newark to Louisville
The EWR–SDF corridor (Newark, NJ → Louisville, KY) runs ahead of the national average, served by 11 carriers across roughly 642 miles.
Data updated 2026-06-13
- 82.8%
- On-time
- +3.8 pts
- vs US avg
- 78 min
- Delay when late
- 4,184
- Flights
Cancelled
3.7%
Best Month
Feb 2024 97%
Worst Month
Jul 2024 68%
Distance
642 mi
Carriers
11
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 74 | 17 | 4 | 0 | YX |
| Nov 2025 | 86 | 20 | 7 | 1 | YX |
| Oct 2025 | 93 | 23 | 2 | 0 | YX |
| Sep 2025 | 63 | 7 | 2 | 0 | YX |
| Aug 2025 | 65 | 11 | 1 | 0 | YX,NK |
| Jul 2025 | 73 | 15 | 6 | 0 | YX,NK |
| Jun 2025 | 71 | 15 | 4 | 0 | NK,YX |
| May 2025 | 66 | 19 | 6 | 0 | UA,YX,NK |
| Apr 2025 | 56 | 9 | 3 | 0 | YX |
| Mar 2025 | 87 | 9 | 1 | 1 | YX |
| Feb 2025 | 83 | 11 | 1 | 0 | YX |
| Jan 2025 | 86 | 10 | 5 | 0 | YX |
| Dec 2024 | 78 | 12 | 1 | 0 | YX |
| Nov 2024 | 83 | 21 | 1 | 0 | YX |
| Oct 2024 | 93 | 15 | 0 | 0 | YX |
| Sep 2024 | 78 | 9 | 0 | 0 | YX |
| Aug 2024 | 82 | 16 | 9 | 0 | YX |
| Jul 2024 | 65 | 21 | 6 | 0 | UA,YX |
| Jun 2024 | 90 | 18 | 6 | 0 | YX |
| May 2024 | 96 | 17 | 1 | 1 | YX,NK,UA |
| Apr 2024 | 90 | 13 | 1 | 0 | YX |
| Mar 2024 | 90 | 5 | 0 | 1 | YX |
| Feb 2024 | 87 | 3 | 2 | 0 | YX |
| Jan 2024 | 85 | 10 | 2 | 0 | YX |
Cancellation Rate
3.7%
71 of 1,920 flights
Diversion Rate
0.2%
4 of 1,920 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
EWR - Newark
Full on-time, delay-cause, and seasonal performance for Newark, NJ.
Origin airport →SDF - Louisville
Full on-time, delay-cause, and seasonal performance for Louisville, KY.
Destination airport →Compare the two airports
See EWR 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 EWR–SDF.
Routes with a similar on-time rate
What the Data Says About EWR to SDF
Bureau of Transportation Statistics records show Newark to Louisville (EWR to SDF) running a 82.8% on-time rate over 4,184 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 78.2 minutes. The 642-mile corridor is served by 11 carriers, and over the last 24 months 3.7% of 1,920 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 97% on-time, while Jul 2024 came in at just 68% - a 29-point swing worth factoring into travel timing.
Frequently Asked Questions
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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.