Southwest Airlines PHX to BOI on-time performance
Southwest Airlines nonstop flights from Phoenix to Boise · Aug 2025 – Jul 2026
On-time arrivals
78%
arrived < 15 min late
Cancelled
0.4%
3 flights
Avg arrival delay
12 min
45 min when late
Rank on route
#3 of 5
route average 81% on time
Key facts
- Southwest Airlines flights on PHX to BOI arrived on time 78% of the time in Aug 2025 – Jul 2026.
- 0.4% were cancelled, and 5% arrived an hour or more late.
- That ranks #3 of 5 airlines on this route, which averaged 81% on time overall.
- The largest source of delay minutes was late-arriving aircraft (57%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft57%
- Airline (crew, maintenance, cleaning, fueling)35%
- Air traffic control & airport congestion7%
- Extreme weather0%
- Security0%
Other airlines on PHX to BOI
- SkyWest Airlines84% on time · 12 min avg delay
- Envoy Air77% on time · 9 min avg delay
- American Airlines70% on time · 19 min avg delay
- Alaska Airlines100% on time · 2 min avg delay
Full PHX to BOI comparison →
Southwest Airlines on-time record across all routes →
813 Southwest Airlines flights tracked on this route; 3 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.