United Airlines IAH to DCA on-time performance
United Airlines nonstop flights from Houston to Washington · Aug 2025 – Jul 2026
On-time arrivals
76%
arrived < 15 min late
Cancelled
0.7%
17 flights
Avg arrival delay
17 min
67 min when late
Rank on route
#2 of 3
route average 75% on time
Key facts
- United Airlines flights on IAH to DCA arrived on time 76% of the time in Aug 2025 – Jul 2026.
- 0.7% were cancelled, and 9% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (46%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion46%
- Late-arriving aircraft27%
- Airline (crew, maintenance, cleaning, fueling)18%
- Extreme weather9%
- Security0%
Other airlines on IAH to DCA
- Republic Airways76% on time · 16 min avg delay
- PSA Airlines68% on time · 35 min avg delay
Full IAH to DCA comparison →
United Airlines on-time record across all routes →
2,406 United Airlines flights tracked on this route; 17 cancelled, 13 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.