United Airlines SMF to DEN on-time performance
United Airlines nonstop flights from Sacramento to Denver · Aug 2025 – Jul 2026
On-time arrivals
89%
arrived < 15 min late
Cancelled
0.5%
9 flights
Avg arrival delay
8 min
70 min when late
Rank on route
#1 of 3
route average 83% on time
Key facts
- United Airlines flights on SMF to DEN arrived on time 89% of the time in Aug 2025 – Jul 2026.
- 0.5% were cancelled, and 4% arrived an hour or more late.
- That ranks #1 of 3 airlines on this route, which averaged 83% on time overall.
- The largest source of delay minutes was late-arriving aircraft (48%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft48%
- Air traffic control & airport congestion26%
- Airline (crew, maintenance, cleaning, fueling)25%
- Extreme weather2%
- Security0%
Other airlines on SMF to DEN
- Southwest Airlines78% on time · 12 min avg delay
- Frontier Airlines82% on time · 16 min avg delay
Full SMF to DEN comparison →
United Airlines on-time record across all routes →
1,793 United Airlines flights tracked on this route; 9 cancelled, 6 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.