Route · DCA → IAH · 2020–2025 BTS data
Washington to Houston
The DCA–IAH corridor (Washington, DC → Houston, TX) runs ahead of the national average, served by 18 carriers across roughly 1,208 miles.
Data updated 2026-06-13
- 84.6%
- On-time
- +5.6 pts
- vs US avg
- 85 min
- Delay when late
- 12,340
- Flights
Cancelled
1.9%
Best Month
Feb 2024 94%
Worst Month
May 2024 66%
Distance
1,208 mi
Carriers
18
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 274 | 53 | 2 | 0 | YX,OH,UA |
| Nov 2025 | 270 | 49 | 8 | 0 | UA,YX |
| Oct 2025 | 291 | 36 | 0 | 0 | UA,YX |
| Sep 2025 | 272 | 38 | 0 | 0 | UA,YX |
| Aug 2025 | 207 | 35 | 2 | 1 | UA |
| Jul 2025 | 207 | 51 | 5 | 1 | UA |
| Jun 2025 | 193 | 62 | 4 | 2 | UA |
| May 2025 | 206 | 42 | 2 | 1 | UA |
| Apr 2025 | 202 | 23 | 0 | 1 | UA |
| Mar 2025 | 196 | 19 | 0 | 0 | UA |
| Feb 2025 | 176 | 34 | 2 | 0 | UA |
| Jan 2025 | 176 | 33 | 20 | 2 | UA |
| Dec 2024 | 180 | 35 | 0 | 1 | UA |
| Nov 2024 | 196 | 18 | 0 | 0 | UA |
| Oct 2024 | 182 | 15 | 1 | 1 | UA |
| Sep 2024 | 171 | 24 | 4 | 0 | UA |
| Aug 2024 | 170 | 28 | 4 | 0 | UA |
| Jul 2024 | 167 | 57 | 17 | 0 | UA |
| Jun 2024 | 160 | 33 | 5 | 2 | OO,UA |
| May 2024 | 169 | 58 | 6 | 3 | OO,UA |
| Apr 2024 | 176 | 32 | 2 | 0 | OO,UA |
| Mar 2024 | 197 | 20 | 0 | 1 | OO,UA |
| Feb 2024 | 193 | 11 | 1 | 0 | OO,UA |
| Jan 2024 | 183 | 33 | 7 | 1 | UA |
Cancellation Rate
1.9%
92 of 4,814 flights
Diversion Rate
0.4%
17 of 4,814 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DCA - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
Origin airport →IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
Destination airport →Compare the two airports
See DCA 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 DCA–IAH.
Routes with a similar on-time rate
What the Data Says About DCA to IAH
Bureau of Transportation Statistics records show Washington to Houston (DCA to IAH) running a 84.6% on-time rate over 12,340 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 84.5 minutes. The 1,208-mile corridor is served by 18 carriers, and over the last 24 months 1.9% of 4,814 flights were cancelled, 0.4% diverted.
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 94% on-time, while May 2024 came in at just 66% - a 29-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.