United Airlines IAH to DEN on-time performance
United Airlines nonstop flights from Houston to Denver · Aug 2025 – Jul 2026
On-time arrivals
82%
arrived < 15 min late
Cancelled
0.3%
10 flights
Avg arrival delay
13 min
67 min when late
Rank on route
#1 of 2
route average 82% on time
Key facts
- United Airlines flights on IAH to DEN arrived on time 82% of the time in Aug 2025 – Jul 2026.
- 0.3% were cancelled, and 6% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 82% on time overall.
- The largest source of delay minutes was late-arriving aircraft (40%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft40%
- Air traffic control & airport congestion28%
- Airline (crew, maintenance, cleaning, fueling)26%
- Extreme weather6%
- Security0%
Other airlines on IAH to DEN
- Frontier Airlines80% on time · 16 min avg delay
Full IAH to DEN comparison →
United Airlines on-time record across all routes →
3,899 United Airlines flights tracked on this route; 10 cancelled, 6 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.