Southwest Airlines SAN to STS on-time performance
Southwest Airlines nonstop flights from San Diego to Santa Rosa · Aug 2025 – Jul 2026
On-time arrivals
70%
arrived < 15 min late
Cancelled
1.6%
3 flights
Avg arrival delay
15 min
44 min when late
Rank on route
#2 of 2
route average 78% on time
Key facts
- Southwest Airlines flights on SAN to STS arrived on time 70% of the time in Aug 2025 – Jul 2026.
- 1.6% were cancelled, and 8% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 78% on time overall.
- The largest source of delay minutes was late-arriving aircraft (75%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft75%
- Airline (crew, maintenance, cleaning, fueling)23%
- Air traffic control & airport congestion2%
- Extreme weather0%
- Security0%
Other airlines on SAN to STS
- SkyWest Airlines80% on time · 10 min avg delay
Full SAN to STS comparison →
Southwest Airlines on-time record across all routes →
182 Southwest Airlines flights tracked on this route; 3 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.