Route · DEN → IAH · 2020–2025 BTS data
Denver to Houston
The DEN–IAH corridor (Denver, CO → Houston, TX) runs behind the national average, served by 19 carriers across roughly 862 miles.
Data updated 2026-06-13
- 76.7%
- On-time
- -2.3 pts
- vs US avg
- 69 min
- Delay when late
- 27,936
- Flights
Cancelled
1.1%
Best Month
Oct 2024 90%
Worst Month
Jul 2025 57%
Distance
862 mi
Carriers
19
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 391 | 69 | 1 | 0 | F9,UA |
| Nov 2025 | 357 | 71 | 0 | 1 | UA,F9 |
| Oct 2025 | 398 | 55 | 1 | 0 | UA,F9 |
| Sep 2025 | 382 | 71 | 1 | 0 | UA,F9 |
| Aug 2025 | 403 | 133 | 2 | 0 | F9,UA |
| Jul 2025 | 402 | 172 | 0 | 4 | UA,F9 |
| Jun 2025 | 390 | 137 | 4 | 2 | UA,F9 |
| May 2025 | 373 | 97 | 2 | 0 | UA,F9 |
| Apr 2025 | 355 | 72 | 0 | 2 | F9,UA |
| Mar 2025 | 372 | 55 | 1 | 0 | UA,F9 |
| Feb 2025 | 336 | 66 | 1 | 0 | UA,F9 |
| Jan 2025 | 379 | 95 | 15 | 0 | UA,F9 |
| Dec 2024 | 389 | 74 | 1 | 1 | F9,UA |
| Nov 2024 | 385 | 88 | 3 | 0 | UA,F9 |
| Oct 2024 | 403 | 41 | 1 | 0 | UA,F9 |
| Sep 2024 | 390 | 50 | 1 | 0 | UA,F9 |
| Aug 2024 | 413 | 103 | 0 | 1 | F9,WN,UA |
| Jul 2024 | 468 | 156 | 25 | 2 | F9,UA,WN |
| Jun 2024 | 457 | 126 | 2 | 1 | F9,UA,WN |
| May 2024 | 472 | 180 | 10 | 4 | F9,UA,WN |
| Apr 2024 | 442 | 123 | 0 | 0 | F9,UA,WN |
| Mar 2024 | 447 | 99 | 5 | 2 | F9,UA,WN |
| Feb 2024 | 390 | 87 | 3 | 0 | F9,UA,WN |
| Jan 2024 | 418 | 109 | 25 | 1 | F9,WN,UA |
Cancellation Rate
1.1%
104 of 9,612 flights
Diversion Rate
0.2%
21 of 9,612 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
Origin airport →IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Destination airport →Compare the two airports
See DEN 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 DEN–IAH.
Routes with a similar on-time rate
What the Data Says About DEN to IAH
The Denver to Houston corridor (DEN to IAH) posts a 76.7% on-time rate on the lower edge of the average band, based on 27,936 tracked flights. Late flights run 68.5 minutes behind on average. 19 carriers cover the 862-mile route; over the last 24 months, 104 of 9,612 flights were cancelled (1.1%) and 0.2% diverted.
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 90% on-time, while Jul 2025 came in at just 57% - a 33-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.