Southwest Airlines SAN to SFO on-time performance
Southwest Airlines nonstop flights from San Diego to San Francisco · Aug 2025 – Jul 2026
On-time arrivals
55%
arrived < 15 min late
Cancelled
1.2%
25 flights
Avg arrival delay
28 min
60 min when late
Rank on route
#3 of 5
route average 62% on time
Key facts
- Southwest Airlines flights on SAN to SFO arrived on time 55% of the time in Aug 2025 – Jul 2026.
- 1.2% were cancelled, and 16% arrived an hour or more late.
- That ranks #3 of 5 airlines on this route, which averaged 62% on time overall.
- The largest source of delay minutes was late-arriving aircraft (45%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft45%
- Air traffic control & airport congestion38%
- Airline (crew, maintenance, cleaning, fueling)16%
- Extreme weather2%
- Security0%
Other airlines on SAN to SFO
- United Airlines69% on time · 19 min avg delay
- SkyWest Airlines65% on time · 23 min avg delay
- Alaska Airlines52% on time · 27 min avg delay
- Frontier Airlines43% on time · 45 min avg delay
Full SAN to SFO comparison →
Southwest Airlines on-time record across all routes →
2,001 Southwest Airlines flights tracked on this route; 25 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.