Route · IAH → DCA · 2020–2025 BTS data
Houston to Washington
The IAH–DCA corridor (Houston, TX → Washington, DC) runs ahead of the national average, served by 18 carriers across roughly 1,208 miles.
Data updated 2026-06-13
- 80.3%
- On-time
- +1.3 pts
- vs US avg
- 69 min
- Delay when late
- 12,345
- Flights
Cancelled
1.7%
Best Month
Jan 2025 90%
Worst Month
Feb 2025 58%
Distance
1,208 mi
Carriers
18
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 273 | 46 | 2 | 0 | YX,OH,UA |
| Nov 2025 | 270 | 63 | 8 | 1 | UA,YX |
| Oct 2025 | 291 | 64 | 0 | 1 | UA,YX |
| Sep 2025 | 272 | 53 | 0 | 0 | UA,YX |
| Aug 2025 | 207 | 77 | 1 | 0 | UA |
| Jul 2025 | 207 | 82 | 5 | 4 | UA |
| Jun 2025 | 194 | 71 | 4 | 1 | UA |
| May 2025 | 205 | 56 | 2 | 1 | UA |
| Apr 2025 | 202 | 35 | 0 | 0 | UA |
| Mar 2025 | 196 | 47 | 0 | 3 | UA |
| Feb 2025 | 176 | 74 | 3 | 1 | UA |
| Jan 2025 | 177 | 18 | 16 | 3 | UA |
| Dec 2024 | 179 | 39 | 0 | 0 | UA |
| Nov 2024 | 196 | 34 | 0 | 1 | UA |
| Oct 2024 | 182 | 28 | 0 | 0 | UA |
| Sep 2024 | 171 | 26 | 3 | 0 | UA |
| Aug 2024 | 170 | 46 | 2 | 0 | UA |
| Jul 2024 | 167 | 53 | 15 | 3 | UA |
| Jun 2024 | 160 | 39 | 2 | 2 | OO,UA |
| May 2024 | 169 | 56 | 7 | 0 | OO,UA |
| Apr 2024 | 176 | 38 | 3 | 2 | OO,UA |
| Mar 2024 | 196 | 39 | 0 | 0 | OO,UA |
| Feb 2024 | 193 | 27 | 1 | 0 | OO,UA |
| Jan 2024 | 184 | 37 | 7 | 1 | UA |
Cancellation Rate
1.7%
81 of 4,813 flights
Diversion Rate
0.5%
24 of 4,813 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 →DCA - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
Destination airport →Compare the two airports
See IAH and DCA 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–DCA.
Routes with a similar on-time rate
What the Data Says About IAH to DCA
12,345 tracked flights put the IAH to DCA pairing (Houston to Washington) at a 80.3% on-time rate, squarely in line with the wider network. Delays that do occur run 68.7 minutes on average. Across the 1,208-mile route and its 18 carriers, the trailing 24 months show 1.7% cancelled and 0.5% diverted (4,813 flights sampled).
The monthly split is wide on this route: Jan 2025 posted the strongest performance at 90% on-time, while Feb 2025 came in at just 58% - a 32-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from IAH to DCA? ▼
What is the cancellation rate for IAH to DCA? ▼
How far is the flight from IAH to DCA? ▼
When is the best time to fly from IAH to DCA? ▼
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.