Southwest Airlines SMF to DEN on-time performance
Southwest Airlines nonstop flights from Sacramento to Denver · Aug 2025 – Jul 2026
On-time arrivals
78%
arrived < 15 min late
Cancelled
0.2%
4 flights
Avg arrival delay
12 min
46 min when late
Rank on route
#3 of 3
route average 83% on time
Key facts
- Southwest Airlines flights on SMF to DEN arrived on time 78% of the time in Aug 2025 – Jul 2026.
- 0.2% were cancelled, and 5% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 83% on time overall.
- The largest source of delay minutes was late-arriving aircraft (40%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft40%
- Air traffic control & airport congestion30%
- Airline (crew, maintenance, cleaning, fueling)27%
- Extreme weather3%
- Security0%
Other airlines on SMF to DEN
- United Airlines89% on time · 8 min avg delay
- Frontier Airlines82% on time · 16 min avg delay
Full SMF to DEN comparison →
Southwest Airlines on-time record across all routes →
1,869 Southwest Airlines flights tracked on this route; 4 cancelled, 8 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.