Southwest Airlines STS to SAN on-time performance
Southwest Airlines nonstop flights from Santa Rosa to San Diego · Aug 2025 – Jul 2026
On-time arrivals
76%
arrived < 15 min late
Cancelled
0.6%
1 flights
Avg arrival delay
18 min
69 min when late
Rank on route
#1 of 2
route average 75% on time
Key facts
- Southwest Airlines flights on STS to SAN arrived on time 76% of the time in Aug 2025 – Jul 2026.
- 0.6% were cancelled, and 7% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was late-arriving aircraft (48%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft48%
- Airline (crew, maintenance, cleaning, fueling)27%
- Air traffic control & airport congestion24%
- Extreme weather1%
- Security0%
Other airlines on STS to SAN
- SkyWest Airlines75% on time · 16 min avg delay
Full STS to SAN comparison →
Southwest Airlines on-time record across all routes →
181 Southwest Airlines flights tracked on this route; 1 cancelled, 0 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.