United Airlines SFO to SMF on-time performance
United Airlines nonstop flights from San Francisco to Sacramento · Aug 2025 – Jul 2026
On-time arrivals
65%
arrived < 15 min late
Cancelled
0.0%
0 flights
Avg arrival delay
20 min
51 min when late
Rank on route
#2 of 2
route average 78% on time
Key facts
- United Airlines flights on SFO to SMF arrived on time 65% of the time in Aug 2025 – Jul 2026.
- 0% were cancelled, and 8% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 78% on time overall.
- The largest source of delay minutes was late-arriving aircraft (61%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft61%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion8%
- Extreme weather0%
- Security0%
Other airlines on SFO to SMF
- SkyWest Airlines79% on time · 18 min avg delay
Full SFO to SMF comparison →
United Airlines on-time record across all routes →
85 United Airlines flights tracked on this route; 0 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.