Southwest Airlines SJC to BOI on-time performance
Southwest Airlines nonstop flights from San Jose to Boise · Aug 2025 – Jul 2026
On-time arrivals
80%
arrived < 15 min late
Cancelled
0.0%
0 flights
Avg arrival delay
11 min
49 min when late
Rank on route
#2 of 2
route average 83% on time
Key facts
- Southwest Airlines flights on SJC to BOI arrived on time 80% of the time in Aug 2025 – Jul 2026.
- 0% were cancelled, and 5% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 83% on time overall.
- The largest source of delay minutes was late-arriving aircraft (71%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft71%
- Airline (crew, maintenance, cleaning, fueling)20%
- Air traffic control & airport congestion9%
- Extreme weather0%
- Security0%
Other airlines on SJC to BOI
- SkyWest Airlines87% on time · 8 min avg delay
Full SJC to BOI comparison →
Southwest Airlines on-time record across all routes →
330 Southwest Airlines flights tracked on this route; 0 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.