Route · IAH → DEN · 2020–2025 BTS data
Houston to Denver
The IAH–DEN corridor (Houston, TX → Denver, CO) runs ahead of the national average, served by 21 carriers across roughly 862 miles.
Data updated 2026-06-13
- 80%
- On-time
- +1 pts
- vs US avg
- 74 min
- Delay when late
- 27,947
- Flights
Cancelled
1.2%
Best Month
Oct 2024 91%
Worst Month
May 2024 60%
Distance
862 mi
Carriers
21
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 390 | 61 | 0 | 0 | F9,UA |
| Nov 2025 | 357 | 61 | 0 | 0 | UA,F9 |
| Oct 2025 | 396 | 67 | 1 | 0 | UA,F9 |
| Sep 2025 | 383 | 69 | 1 | 0 | UA,F9 |
| Aug 2025 | 403 | 107 | 1 | 2 | F9,UA |
| Jul 2025 | 402 | 109 | 0 | 6 | UA,F9 |
| Jun 2025 | 390 | 114 | 4 | 2 | UA,F9 |
| May 2025 | 374 | 95 | 1 | 3 | UA,F9 |
| Apr 2025 | 355 | 81 | 1 | 0 | F9,UA |
| Mar 2025 | 372 | 59 | 2 | 2 | UA,F9 |
| Feb 2025 | 336 | 64 | 0 | 0 | UA,F9 |
| Jan 2025 | 378 | 87 | 15 | 2 | UA,F9 |
| Dec 2024 | 388 | 82 | 1 | 0 | F9,UA |
| Nov 2024 | 385 | 69 | 1 | 1 | UA,F9 |
| Oct 2024 | 403 | 38 | 0 | 0 | UA,F9 |
| Sep 2024 | 390 | 55 | 1 | 2 | UA,F9 |
| Aug 2024 | 415 | 84 | 2 | 0 | F9,WN,UA |
| Jul 2024 | 467 | 142 | 30 | 1 | F9,UA,WN |
| Jun 2024 | 455 | 140 | 2 | 4 | F9,UA,WN |
| May 2024 | 468 | 188 | 12 | 3 | F9,UA,WN |
| Apr 2024 | 441 | 84 | 1 | 0 | F9,OO,UA,WN |
| Mar 2024 | 453 | 76 | 7 | 0 | F9,UA,WN |
| Feb 2024 | 382 | 57 | 3 | 3 | F9,UA,WN |
| Jan 2024 | 410 | 102 | 28 | 2 | F9,WN,UA |
Cancellation Rate
1.2%
114 of 9,593 flights
Diversion Rate
0.3%
33 of 9,593 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 →DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
Destination airport →Compare the two airports
See IAH and DEN 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–DEN.
Routes with a similar on-time rate
What the Data Says About IAH to DEN
27,947 tracked flights put the IAH to DEN pairing (Houston to Denver) at a 80% on-time rate, squarely in line with the wider network. Delays that do occur run 73.8 minutes on average. Across the 862-mile route and its 21 carriers, the trailing 24 months show 1.2% cancelled and 0.3% diverted (9,593 flights sampled).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 91% on-time, while May 2024 came in at just 60% - a 31-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from IAH to DEN? ▼
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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.