Route Reliability
Washington → Houston
DCA–IAH · 1,208 miles · Ronald Reagan Washington National Airport to George Bush Intercontinental Airport
- 82%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 1.9%
- Cancelled
- 3,117
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines84%2,412 flights
- 2.American Airlines75%705 flights
What the data says
Morning-you made the right choice.
DCA–IAH flights departing between 6–9 AM arrived on time 91% of the time, versus 63% between 3–6 PM.
Friday is doing you no favors.
DCA–IAH flights arrived on time 87% of the time on Saturdays. On Fridays: 78%.
United Airlines runs this route best.
United Airlines arrived on time 84% of the time on this route; American Airlines managed 75%.
Slipping a little lately.
DCA–IAH flights arrived on time 79% of the time over the last three months in the data, compared with 85% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon81%(460 flights)
- Tue86%(469 flights)
- Wed83%(465 flights)
- Thu82%(461 flights)
- Fri78%(460 flights)
- Sat87%(294 flights)
- Sun79%(443 flights)
- 6–9 AM91%(898 flights)
- 9 AM–12 PM88%(364 flights)
- 12–3 PM81%(903 flights)
- 3–6 PM63%(350 flights)
- 6–9 PM76%(537 flights)
Jun 67% → May 71% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 67% | 190 |
| July 2025 | 75% | 201 |
| August 2025 | 83% | 204 |
| September 2025 | 87% | 272 |
| October 2025 | 88% | 291 |
| November 2025 | 83% | 262 |
| December 2025 | 81% | 272 |
| January 2026 | 85% | 264 |
| February 2026 | 90% | 252 |
| March 2026 | 83% | 277 |
| April 2026 | 83% | 282 |
| May 2026 | 71% | 285 |
Same trip, other airports
Keep nerding
Based on 3,117 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.