Route · IAH → AUS · 2020–2025 BTS data
Houston to Austin
The IAH–AUS corridor (Houston, TX → Austin, TX) runs ahead of the national average, served by 14 carriers across roughly 140 miles.
Data updated 2026-06-13
- 79.1%
- On-time
- +0.1 pts
- vs US avg
- 71 min
- Delay when late
- 13,660
- Flights
Cancelled
1.2%
Best Month
Sep 2025 88%
Worst Month
May 2024 54%
Distance
140 mi
Carriers
14
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 231 | 46 | 0 | 0 | UA,OO |
| Nov 2025 | 222 | 60 | 3 | 1 | UA |
| Oct 2025 | 237 | 47 | 0 | 0 | UA |
| Sep 2025 | 237 | 29 | 0 | 0 | UA |
| Aug 2025 | 214 | 50 | 1 | 0 | OO,UA |
| Jul 2025 | 188 | 65 | 1 | 0 | OO,UA |
| Jun 2025 | 200 | 77 | 6 | 0 | OO,UA |
| May 2025 | 235 | 64 | 6 | 0 | OO,UA |
| Apr 2025 | 229 | 45 | 0 | 0 | OO,UA |
| Mar 2025 | 236 | 51 | 0 | 1 | OO,UA |
| Feb 2025 | 202 | 33 | 0 | 0 | OO,UA |
| Jan 2025 | 205 | 36 | 11 | 0 | OO,UA |
| Dec 2024 | 190 | 49 | 2 | 0 | NK,OO,UA |
| Nov 2024 | 214 | 35 | 1 | 0 | OO,UA |
| Oct 2024 | 216 | 43 | 0 | 0 | UA,OO |
| Sep 2024 | 187 | 33 | 0 | 0 | OO,UA |
| Aug 2024 | 189 | 49 | 0 | 0 | NK,OO,UA |
| Jul 2024 | 193 | 82 | 10 | 0 | OO,UA |
| Jun 2024 | 183 | 68 | 2 | 0 | OO,UA |
| May 2024 | 165 | 76 | 6 | 0 | OO,UA |
| Apr 2024 | 148 | 34 | 0 | 2 | OO,UA |
| Mar 2024 | 194 | 45 | 2 | 0 | OO,UA |
| Feb 2024 | 159 | 21 | 0 | 0 | OO,UA |
| Jan 2024 | 157 | 37 | 7 | 0 | UA |
Cancellation Rate
1.2%
58 of 4,831 flights
Diversion Rate
0.1%
4 of 4,831 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 →AUS - Austin
Full on-time, delay-cause, and seasonal performance for Austin, TX.
Destination airport →Compare the two airports
See IAH and AUS 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–AUS.
Routes with a similar on-time rate
What the Data Says About IAH to AUS
13,660 tracked flights put the IAH to AUS pairing (Houston to Austin) at a 79.1% on-time rate, squarely in line with the wider network. Delays that do occur run 70.6 minutes on average. Across the 140-mile route and its 14 carriers, the trailing 24 months show 1.2% cancelled and 0.1% diverted (4,831 flights sampled).
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 88% on-time, while May 2024 came in at just 54% - a 34-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.