Southwest Airlines SFO to SAN on-time performance
Southwest Airlines nonstop flights from San Francisco to San Diego · Aug 2025 – Jul 2026
On-time arrivals
51%
arrived < 15 min late
Cancelled
1.3%
27 flights
Avg arrival delay
32 min
63 min when late
Rank on route
#5 of 5
route average 65% on time
Key facts
- Southwest Airlines flights on SFO to SAN arrived on time 51% of the time in Aug 2025 – Jul 2026.
- 1.3% were cancelled, and 19% arrived an hour or more late.
- That ranks #5 of 5 airlines on this route, which averaged 65% on time overall.
- The largest source of delay minutes was late-arriving aircraft (62%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft62%
- Airline (crew, maintenance, cleaning, fueling)21%
- Air traffic control & airport congestion17%
- Extreme weather0%
- Security0%
Other airlines on SFO to SAN
- United Airlines75% on time · 15 min avg delay
- SkyWest Airlines64% on time · 22 min avg delay
- Alaska Airlines87% on time · 8 min avg delay
- Frontier Airlines52% on time · 41 min avg delay
Full SFO to SAN comparison →
Southwest Airlines on-time record across all routes →
2,001 Southwest Airlines flights tracked on this route; 27 cancelled, 4 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.