United Airlines DEN to IAH on-time performance
United Airlines nonstop flights from Denver to Houston · Aug 2025 – Jul 2026
On-time arrivals
79%
arrived < 15 min late
Cancelled
0.3%
11 flights
Avg arrival delay
14 min
61 min when late
Rank on route
#2 of 2
route average 79% on time
Key facts
- United Airlines flights on DEN to IAH arrived on time 79% of the time in Aug 2025 – Jul 2026.
- 0.3% were cancelled, and 7% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 79% on time overall.
- The largest source of delay minutes was late-arriving aircraft (39%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft39%
- Air traffic control & airport congestion32%
- Airline (crew, maintenance, cleaning, fueling)28%
- Extreme weather1%
- Security0%
Other airlines on DEN to IAH
- Frontier Airlines80% on time · 12 min avg delay
Full DEN to IAH comparison →
United Airlines on-time record across all routes →
3,899 United Airlines flights tracked on this route; 11 cancelled, 5 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.