Flight Reliability
WN 4686 · Southwest Airlines
Boise → Phoenix (BOI–PHX)87% of its flights flew this route. The rest (COS–DEN, ABQ–HOU) are included in these numbers.
89
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 5 min early
- Average arrival delay
- 0%
- Cancelled
- 11 min early
- Median arrival delay
Based on 67 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
WN 4686 departing between 6–9 AM arrived on time 100% of the time, versus 61% between 3–6 PM.
Saturday comes out ahead.
A small edge: 77% on time on Saturdays against 73% on Sundays.
A bit behind the BOI–PHX route.
WN 4686 arrived on time 81% of the time, versus 84% across the BOI–PHX route.
The breakdown
- Mon—(9 flights)
- Tue—(9 flights)
- Wed—(9 flights)
- Thu—(8 flights)
- Fri—(8 flights)
- Sat77%(13 flights)
- Sun73%(11 flights)
- 6–9 AM100%(28 flights)
- 12–3 PM—(6 flights)
- 3–6 PM61%(33 flights)
- Departures on time
- 79%
- Diverted
- 0%
- Flights flown
- 67
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 67 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.