United Airlines SLC to SFO on-time performance
United Airlines nonstop flights from Salt Lake City to San Francisco · Aug 2025 – Jul 2026
On-time arrivals
71%
arrived < 15 min late
Cancelled
0.2%
1 flights
Avg arrival delay
21 min
71 min when late
Rank on route
#1 of 4
route average 66% on time
Key facts
- United Airlines flights on SLC to SFO arrived on time 71% of the time in Aug 2025 – Jul 2026.
- 0.2% were cancelled, and 12% arrived an hour or more late.
- That ranks #1 of 4 airlines on this route, which averaged 66% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (58%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion58%
- Late-arriving aircraft31%
- Airline (crew, maintenance, cleaning, fueling)10%
- Extreme weather0%
- Security0%
Other airlines on SLC to SFO
- Delta Air Lines64% on time · 20 min avg delay
- SkyWest Airlines66% on time · 27 min avg delay
- Frontier Airlines67% on time · 34 min avg delay
Full SLC to SFO comparison →
United Airlines on-time record across all routes →
507 United Airlines flights tracked on this route; 1 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.