United Airlines DCA to IAH on-time performance
United Airlines nonstop flights from Washington to Houston · Aug 2025 – Jul 2026
On-time arrivals
84%
arrived < 15 min late
Cancelled
0.8%
20 flights
Avg arrival delay
14 min
86 min when late
Rank on route
#1 of 3
route average 81% on time
Key facts
- United Airlines flights on DCA to IAH arrived on time 84% of the time in Aug 2025 – Jul 2026.
- 0.8% were cancelled, and 7% arrived an hour or more late.
- That ranks #1 of 3 airlines on this route, which averaged 81% on time overall.
- The largest source of delay minutes was late-arriving aircraft (45%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft45%
- Air traffic control & airport congestion28%
- Airline (crew, maintenance, cleaning, fueling)25%
- Extreme weather3%
- Security0%
Other airlines on DCA to IAH
- Republic Airways76% on time · 15 min avg delay
- PSA Airlines67% on time · 27 min avg delay
Full DCA to IAH comparison →
United Airlines on-time record across all routes →
2,406 United Airlines flights tracked on this route; 20 cancelled, 4 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.