Southwest Airlines SFO to DEN on-time performance
Southwest Airlines nonstop flights from San Francisco to Denver · Aug 2025 – Jul 2026
On-time arrivals
60%
arrived < 15 min late
Cancelled
0.8%
11 flights
Avg arrival delay
25 min
59 min when late
Rank on route
#3 of 3
route average 75% on time
Key facts
- Southwest Airlines flights on SFO to DEN arrived on time 60% of the time in Aug 2025 – Jul 2026.
- 0.8% were cancelled, and 13% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was late-arriving aircraft (58%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft58%
- Airline (crew, maintenance, cleaning, fueling)25%
- Air traffic control & airport congestion17%
- Extreme weather1%
- Security0%
Other airlines on SFO to DEN
- United Airlines83% on time · 11 min avg delay
- Frontier Airlines70% on time · 19 min avg delay
Full SFO to DEN comparison →
Southwest Airlines on-time record across all routes →
1,413 Southwest Airlines flights tracked on this route; 11 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.