Southwest Airlines SJC to DEN on-time performance
Southwest Airlines nonstop flights from San Jose to Denver · Aug 2025 – Jul 2026
On-time arrivals
76%
arrived < 15 min late
Cancelled
0.5%
7 flights
Avg arrival delay
13 min
49 min when late
Rank on route
#3 of 3
route average 81% on time
Key facts
- Southwest Airlines flights on SJC to DEN arrived on time 76% of the time in Aug 2025 – Jul 2026.
- 0.5% were cancelled, and 6% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 81% on time overall.
- The largest source of delay minutes was late-arriving aircraft (35%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft35%
- Air traffic control & airport congestion33%
- Airline (crew, maintenance, cleaning, fueling)29%
- Extreme weather2%
- Security1%
Other airlines on SJC to DEN
- United Airlines89% on time · 8 min avg delay
- Frontier Airlines85% on time · 7 min avg delay
Full SJC to DEN comparison →
Southwest Airlines on-time record across all routes →
1,528 Southwest Airlines flights tracked on this route; 7 cancelled, 3 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.