United Airlines SMF to SFO on-time performance
United Airlines nonstop flights from Sacramento to San Francisco · Aug 2025 – Jul 2026
On-time arrivals
93%
arrived < 15 min late
Cancelled
0.0%
0 flights
Avg arrival delay
6 min
75 min when late
Rank on route
#1 of 2
route average 63% on time
Key facts
- United Airlines flights on SMF to SFO arrived on time 93% of the time in Aug 2025 – Jul 2026.
- 0% were cancelled, and 4% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 63% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (66%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)66%
- Air traffic control & airport congestion34%
- Late-arriving aircraft0%
- Extreme weather0%
- Security0%
Other airlines on SMF to SFO
- SkyWest Airlines61% on time · 28 min avg delay
Full SMF to SFO comparison →
United Airlines on-time record across all routes →
84 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.