United Airlines SFO to LAS on-time performance
United Airlines nonstop flights from San Francisco to Las Vegas · Aug 2025 – Jul 2026
On-time arrivals
79%
arrived < 15 min late
Cancelled
0.4%
10 flights
Avg arrival delay
13 min
54 min when late
Rank on route
#1 of 5
route average 73% on time
Key facts
- United Airlines flights on SFO to LAS arrived on time 79% of the time in Aug 2025 – Jul 2026.
- 0.4% were cancelled, and 7% arrived an hour or more late.
- That ranks #1 of 5 airlines on this route, which averaged 73% on time overall.
- The largest source of delay minutes was late-arriving aircraft (49%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft49%
- Air traffic control & airport congestion27%
- Airline (crew, maintenance, cleaning, fueling)24%
- Extreme weather0%
- Security0%
Other airlines on SFO to LAS
- Southwest Airlines64% on time · 24 min avg delay
- Alaska Airlines75% on time · 17 min avg delay
- Frontier Airlines64% on time · 33 min avg delay
- SkyWest Airlines50% on time · 41 min avg delay
Full SFO to LAS comparison →
United Airlines on-time record across all routes →
2,793 United Airlines flights tracked on this route; 10 cancelled, 3 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.