Route · IAH → SDF · 2020–2025 BTS data
Houston to Louisville
The IAH–SDF corridor (Houston, TX → Louisville, KY) runs ahead of the national average, served by 11 carriers across roughly 788 miles.
Data updated 2026-06-13
- 84.4%
- On-time
- +5.4 pts
- vs US avg
- 84 min
- Delay when late
- 1,876
- Flights
Cancelled
1.4%
Best Month
Oct 2022 95%
Worst Month
Aug 2021 59%
Distance
788 mi
Carriers
11
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Aug 2023 | 31 | 4 | 0 | 0 | UA |
| Jul 2023 | 31 | 10 | 0 | 0 | UA |
| Jun 2023 | 30 | 9 | 1 | 0 | UA |
| May 2023 | 41 | 11 | 0 | 0 | AA,MQ,NK,UA |
| Dec 2022 | 57 | 9 | 0 | 0 | YV |
| Nov 2022 | 60 | 6 | 0 | 0 | YV |
| Oct 2022 | 62 | 3 | 0 | 0 | OO,YV |
| Sep 2022 | 56 | 4 | 0 | 0 | OO,YV |
| Aug 2022 | 61 | 13 | 1 | 0 | OO,YV |
| Jul 2022 | 62 | 5 | 0 | 0 | OO,YV |
| Jun 2022 | 60 | 15 | 0 | 0 | OO,YV |
| May 2022 | 65 | 10 | 2 | 0 | UA,YV |
| Apr 2022 | 51 | 4 | 1 | 0 | YV |
| Mar 2022 | 57 | 11 | 0 | 0 | YV |
| Feb 2022 | 56 | 11 | 2 | 0 | YV,OO |
| Jan 2022 | 54 | 16 | 5 | 0 | OO,YV |
| Dec 2021 | 60 | 5 | 2 | 0 | OO,YV |
| Nov 2021 | 73 | 12 | 2 | 0 | YV,OO |
| Oct 2021 | 83 | 17 | 1 | 0 | OO,YV |
| Sep 2021 | 76 | 13 | 1 | 0 | OO,YV |
| Aug 2021 | 58 | 24 | 0 | 0 | YV |
| Jul 2021 | 57 | 17 | 0 | 0 | YV |
| Jun 2021 | 54 | 16 | 1 | 1 | YV |
| May 2021 | 31 | 5 | 0 | 0 | UA,YV |
Cancellation Rate
1.4%
19 of 1,326 flights
Diversion Rate
0.1%
1 of 1,326 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Origin airport →SDF - Louisville
Full on-time, delay-cause, and seasonal performance for Louisville, KY.
Destination airport →Compare the two airports
See IAH 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 IAH–SDF.
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Routes of a similar trip length
What the Data Says About IAH to SDF
Bureau of Transportation Statistics records show Houston to Louisville (IAH to SDF) running a 84.4% on-time rate over 1,876 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 83.7 minutes. The 788-mile corridor is served by 11 carriers, and over the last 24 months 1.4% of 1,326 flights were cancelled, 0.1% diverted.
The monthly split is wide on this route: Oct 2022 posted the strongest performance at 95% on-time, while Aug 2021 came in at just 59% - a 37-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.