Route · DAL → IAH · 2020–2025 BTS data
Dallas to Houston
The DAL–IAH corridor (Dallas, TX → Houston, TX) runs ahead of the national average, served by 1 carrier across roughly 216 miles.
Data updated 2026-06-13
- 79.4%
- On-time
- +0.4 pts
- vs US avg
- 61 min
- Delay when late
- 5,383
- Flights
Cancelled
2.1%
Best Month
Aug 2023 92%
Worst Month
Jun 2024 66%
Distance
216 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Jul 2024 | 83 | 25 | 3 | 0 | WN |
| Jun 2024 | 80 | 27 | 0 | 0 | WN |
| May 2024 | 75 | 21 | 1 | 0 | WN |
| Apr 2024 | 77 | 17 | 1 | 0 | WN |
| Mar 2024 | 88 | 25 | 0 | 0 | WN |
| Feb 2024 | 83 | 11 | 0 | 0 | WN |
| Jan 2024 | 99 | 18 | 5 | 0 | WN |
| Dec 2023 | 128 | 20 | 1 | 0 | WN |
| Nov 2023 | 129 | 17 | 2 | 1 | WN |
| Oct 2023 | 137 | 31 | 1 | 0 | WN |
| Sep 2023 | 133 | 15 | 0 | 0 | WN |
| Aug 2023 | 143 | 12 | 1 | 0 | WN |
| Jul 2023 | 134 | 21 | 1 | 0 | WN |
| Jun 2023 | 131 | 26 | 2 | 1 | WN |
| May 2023 | 139 | 24 | 2 | 0 | WN |
| Apr 2023 | 132 | 31 | 3 | 1 | WN |
| Mar 2023 | 143 | 42 | 2 | 0 | WN |
| Feb 2023 | 128 | 23 | 5 | 0 | WN |
| Jan 2023 | 142 | 21 | 9 | 0 | WN |
| Dec 2022 | 132 | 29 | 11 | 0 | WN |
| Nov 2022 | 130 | 15 | 1 | 0 | WN |
| Oct 2022 | 131 | 21 | 2 | 0 | WN |
| Sep 2022 | 132 | 19 | 1 | 0 | WN |
| Aug 2022 | 147 | 33 | 5 | 0 | WN |
Cancellation Rate
2.1%
59 of 2,876 flights
Diversion Rate
0.1%
3 of 2,876 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DAL - Dallas
Full on-time, delay-cause, and seasonal performance for Dallas, TX.
Origin airport →IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Destination airport →Compare the two airports
See DAL 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 DAL–IAH.
Routes with a similar on-time rate
What the Data Says About DAL to IAH
5,383 tracked flights put the DAL to IAH pairing (Dallas to Houston) at a 79.4% on-time rate, squarely in line with the wider network. Delays that do occur run 60.7 minutes on average. Across the 216-mile route and its 1 carrier, the trailing 24 months show 2.1% cancelled and 0.1% diverted (2,876 flights sampled).
The monthly split is wide on this route: Aug 2023 posted the strongest performance at 92% on-time, while Jun 2024 came in at just 66% - a 25-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.