Southwest Airlines DEN to SFO on-time performance
Southwest Airlines nonstop flights from Denver to San Francisco · Aug 2025 – Jul 2026
On-time arrivals
51%
arrived < 15 min late
Cancelled
0.4%
6 flights
Avg arrival delay
30 min
59 min when late
Rank on route
#3 of 3
route average 65% on time
Key facts
- Southwest Airlines flights on DEN to SFO arrived on time 51% of the time in Aug 2025 – Jul 2026.
- 0.4% were cancelled, and 20% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 65% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (42%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion42%
- Late-arriving aircraft33%
- Airline (crew, maintenance, cleaning, fueling)21%
- Extreme weather3%
- Security0%
Other airlines on DEN to SFO
- United Airlines70% on time · 20 min avg delay
- Frontier Airlines65% on time · 20 min avg delay
Full DEN to SFO comparison →
Southwest Airlines on-time record across all routes →
1,415 Southwest Airlines flights tracked on this route; 6 cancelled, 1 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.