United Airlines LAS to IAH on-time performance
United Airlines nonstop flights from Las Vegas to Houston · Aug 2025 – Jul 2026
On-time arrivals
86%
arrived < 15 min late
Cancelled
0.4%
10 flights
Avg arrival delay
11 min
74 min when late
Rank on route
#1 of 3
route average 84% on time
Key facts
- United Airlines flights on LAS to IAH arrived on time 86% of the time in Aug 2025 – Jul 2026.
- 0.4% were cancelled, and 5% arrived an hour or more late.
- That ranks #1 of 3 airlines on this route, which averaged 84% 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%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion27%
- Extreme weather2%
- Security0%
Other airlines on LAS to IAH
- Spirit Airlines78% on time · 23 min avg delay
- Frontier Airlines79% on time · 14 min avg delay
Full LAS to IAH comparison →
United Airlines on-time record across all routes →
2,594 United Airlines flights tracked on this route; 10 cancelled, 10 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.