United Airlines LAS to SFO on-time performance
United Airlines nonstop flights from Las Vegas to San Francisco · Aug 2025 – Jul 2026
On-time arrivals
65%
arrived < 15 min late
Cancelled
0.4%
11 flights
Avg arrival delay
23 min
62 min when late
Rank on route
#2 of 5
route average 61% on time
Key facts
- United Airlines flights on LAS to SFO arrived on time 65% of the time in Aug 2025 – Jul 2026.
- 0.4% were cancelled, and 12% arrived an hour or more late.
- That ranks #2 of 5 airlines on this route, which averaged 61% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (56%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion56%
- Late-arriving aircraft32%
- Airline (crew, maintenance, cleaning, fueling)12%
- Extreme weather1%
- Security0%
Other airlines on LAS to SFO
- Southwest Airlines46% on time · 30 min avg delay
- Alaska Airlines65% on time · 19 min avg delay
- Frontier Airlines62% on time · 27 min avg delay
- SkyWest Airlines100% on time · 6 min avg delay
Full LAS to SFO comparison →
United Airlines on-time record across all routes →
2,793 United Airlines flights tracked on this route; 11 cancelled, 0 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.