Southwest Airlines SAN to SLC on-time performance
Southwest Airlines nonstop flights from San Diego to Salt Lake City · Aug 2025 – Jul 2026
On-time arrivals
76%
arrived < 15 min late
Cancelled
0.2%
1 flights
Avg arrival delay
12 min
45 min when late
Rank on route
#4 of 4
route average 84% on time
Key facts
- Southwest Airlines flights on SAN to SLC arrived on time 76% of the time in Aug 2025 – Jul 2026.
- 0.2% were cancelled, and 6% arrived an hour or more late.
- That ranks #4 of 4 airlines on this route, which averaged 84% on time overall.
- The largest source of delay minutes was late-arriving aircraft (73%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft73%
- Airline (crew, maintenance, cleaning, fueling)20%
- Air traffic control & airport congestion6%
- Security1%
- Extreme weather0%
Other airlines on SAN to SLC
- Delta Air Lines89% on time · 9 min avg delay
- SkyWest Airlines79% on time · 14 min avg delay
- Frontier Airlines83% on time · 17 min avg delay
Full SAN to SLC comparison →
Southwest Airlines on-time record across all routes →
408 Southwest Airlines flights tracked on this route; 1 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.