United Airlines IAH to LAS on-time performance
United Airlines nonstop flights from Houston to Las Vegas · Aug 2025 – Jul 2026
On-time arrivals
84%
arrived < 15 min late
Cancelled
0.3%
8 flights
Avg arrival delay
10 min
58 min when late
Rank on route
#1 of 3
route average 82% on time
Key facts
- United Airlines flights on IAH to LAS arrived on time 84% of the time in Aug 2025 – Jul 2026.
- 0.3% were cancelled, and 5% arrived an hour or more late.
- That ranks #1 of 3 airlines on this route, which averaged 82% 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%
- Airline (crew, maintenance, cleaning, fueling)30%
- Air traffic control & airport congestion28%
- Extreme weather4%
- Security0%
Other airlines on IAH to LAS
- Spirit Airlines82% on time · 14 min avg delay
- Frontier Airlines70% on time · 37 min avg delay
Full IAH to LAS comparison →
United Airlines on-time record across all routes →
2,595 United Airlines flights tracked on this route; 8 cancelled, 1 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.