WN2128 BOI → SMF

Southwest Airlines · Boise, ID to Sacramento, CA · 18 flights observed, 2025-08-05 to 2025-10-01 · 437 mi

This flight has been getting more reliable recently — 2025-09's on-time rate (89%) is well above the 50% average from earlier months.

WN2128 covers more than one route in the data window — the stats below are for BOI → SMF, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
72%
Median delay
+2 min
90th percentile
+44 min
Cancellation rate
0%

How often is WN2128 on time?

Across 18 flights on BOI → SMF from 2025-08-05 to 2025-10-01, WN2128 arrived within 15 minutes of schedule 72% of the time. The median arrival delay was +2 min, and the worst 10% of flights arrived +44 min or later. 0% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time1372%
16-30 min16%
31-60 min317%
61-120 min16%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2025-08850%+22 min
2025-09989%+5 min
2025-101100%0 min

Performance by day of week

DayFlightsOn-time
MonNo data—
Tue978%
Wed967%
ThuNo data—
FriNo data—
SatNo data—
SunNo data—

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…