Route · IAH → SLC · 2020–2025 BTS data
Houston to Salt Lake City
The IAH–SLC corridor (Houston, TX → Salt Lake City, UT) runs ahead of the national average, served by 20 carriers across roughly 1,195 miles.
Data updated 2026-06-13
- 83.5%
- On-time
- +4.5 pts
- vs US avg
- 87 min
- Delay when late
- 12,783
- Flights
Cancelled
0.9%
Best Month
Sep 2025 91%
Worst Month
May 2024 63%
Distance
1,195 mi
Carriers
20
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 185 | 35 | 1 | 0 | DL,UA |
| Nov 2025 | 137 | 28 | 0 | 0 | OO,UA,DL |
| Oct 2025 | 146 | 27 | 0 | 1 | DL,OO,UA |
| Sep 2025 | 161 | 15 | 0 | 0 | UA,DL |
| Aug 2025 | 160 | 36 | 1 | 0 | OO,UA,DL |
| Jul 2025 | 154 | 34 | 1 | 0 | DL,OO,UA |
| Jun 2025 | 150 | 37 | 2 | 0 | DL,OO,UA |
| May 2025 | 149 | 34 | 0 | 0 | DL,UA |
| Apr 2025 | 176 | 32 | 0 | 1 | DL,UA |
| Mar 2025 | 206 | 22 | 0 | 0 | DL,OO,UA |
| Feb 2025 | 174 | 32 | 0 | 0 | DL,OO,UA |
| Jan 2025 | 178 | 35 | 6 | 0 | DL,OO,UA |
| Dec 2024 | 172 | 34 | 1 | 1 | DL,OO,UA |
| Nov 2024 | 136 | 18 | 0 | 0 | OO,UA,DL |
| Oct 2024 | 170 | 16 | 0 | 0 | UA,OO,DL |
| Sep 2024 | 173 | 26 | 0 | 1 | UA,DL |
| Aug 2024 | 160 | 26 | 1 | 1 | DL,OO,UA |
| Jul 2024 | 152 | 56 | 11 | 0 | DL,OO,UA |
| Jun 2024 | 152 | 35 | 1 | 0 | DL,OO,UA |
| May 2024 | 151 | 56 | 4 | 0 | DL,OO,UA |
| Apr 2024 | 150 | 28 | 0 | 0 | DL,OO,UA |
| Mar 2024 | 210 | 36 | 1 | 1 | DL,OO,UA |
| Feb 2024 | 177 | 19 | 0 | 0 | DL,OO,UA |
| Jan 2024 | 186 | 50 | 6 | 0 | DL,OO,UA |
Cancellation Rate
0.9%
36 of 3,965 flights
Diversion Rate
0.2%
6 of 3,965 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 →SLC - Salt Lake City
Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.
Destination airport →Compare the two airports
See IAH and SLC 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–SLC.
Routes with a similar on-time rate
What the Data Says About IAH to SLC
Bureau of Transportation Statistics records show Houston to Salt Lake City (IAH to SLC) running a 83.5% on-time rate over 12,783 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 87.0 minutes. The 1,195-mile corridor is served by 20 carriers, and over the last 24 months 0.9% of 3,965 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 91% on-time, while May 2024 came in at just 63% - a 28-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from IAH to SLC? ▼
What is the cancellation rate for IAH to SLC? ▼
How far is the flight from IAH to SLC? ▼
When is the best time to fly from IAH to SLC? ▼
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.