Route · SDF → IAH · 2020–2025 BTS data
Louisville to Houston
The SDF–IAH corridor (Louisville, KY → Houston, TX) runs ahead of the national average, served by 11 carriers across roughly 788 miles.
Data updated 2026-06-13
- 83.1%
- On-time
- +4.1 pts
- vs US avg
- 86 min
- Delay when late
- 1,875
- Flights
Cancelled
1.3%
Best Month
Jul 2022 92%
Worst Month
Aug 2021 67%
Distance
788 mi
Carriers
11
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Aug 2023 | 31 | 2 | 0 | 0 | UA |
| Jul 2023 | 31 | 7 | 0 | 0 | UA |
| Jun 2023 | 30 | 16 | 1 | 0 | UA |
| May 2023 | 41 | 15 | 1 | 1 | AA,MQ,NK,UA |
| Dec 2022 | 57 | 10 | 0 | 0 | YV |
| Nov 2022 | 60 | 9 | 0 | 0 | YV |
| Oct 2022 | 62 | 11 | 0 | 0 | OO,YV |
| Sep 2022 | 57 | 7 | 0 | 0 | OO,YV |
| Aug 2022 | 60 | 16 | 0 | 0 | YV |
| Jul 2022 | 62 | 5 | 1 | 0 | YV |
| Jun 2022 | 60 | 15 | 0 | 0 | YV |
| May 2022 | 65 | 12 | 0 | 0 | UA,YV |
| Apr 2022 | 51 | 8 | 1 | 0 | YV |
| Mar 2022 | 57 | 6 | 0 | 0 | YV |
| Feb 2022 | 56 | 10 | 2 | 0 | YV,OO |
| Jan 2022 | 54 | 15 | 4 | 0 | OO,YV |
| Dec 2021 | 60 | 13 | 4 | 1 | OO,YV |
| Nov 2021 | 73 | 14 | 2 | 0 | YV,OO |
| Oct 2021 | 83 | 13 | 0 | 1 | OO,YV |
| Sep 2021 | 76 | 10 | 0 | 0 | OO,YV |
| Aug 2021 | 58 | 19 | 0 | 0 | YV |
| Jul 2021 | 57 | 12 | 0 | 0 | YV |
| Jun 2021 | 54 | 16 | 1 | 1 | YV |
| May 2021 | 31 | 1 | 0 | 0 | UA,YV |
Cancellation Rate
1.3%
17 of 1,326 flights
Diversion Rate
0.3%
4 of 1,326 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 →IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Destination airport →Compare the two airports
See SDF and IAH 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–IAH.
Routes with a similar on-time rate
Routes of a similar trip length
What the Data Says About SDF to IAH
Bureau of Transportation Statistics records show Louisville to Houston (SDF to IAH) running a 83.1% on-time rate over 1,875 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 85.5 minutes. The 788-mile corridor is served by 11 carriers, and over the last 24 months 1.3% of 1,326 flights were cancelled, 0.3% diverted.
The monthly split is wide on this route: Jul 2022 posted the strongest performance at 92% on-time, while Aug 2021 came in at just 67% - a 25-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from SDF to IAH? ▼
What is the cancellation rate for SDF to IAH? ▼
How far is the flight from SDF to IAH? ▼
When is the best time to fly from SDF to IAH? ▼
Flight Guides
Tips and data-driven advice for choosing reliable routes.
Explore PlainFlights
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.