WN4374 SMF → ONT

Southwest Airlines · Sacramento, CA to Ontario, CA · 42 flights observed, 2025-11-02 to 2026-01-05 · 390 mi

WN4374 covers more than one route in the data window — the stats below are for SMF → ONT, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
83%
Median delay
-1 min
90th percentile
+50 min
Cancellation rate
0%

How often is WN4374 on time?

Across 42 flights on SMF → ONT from 2025-11-02 to 2026-01-05, WN4374 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +50 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3583%
16-30 min12%
31-60 min25%
61-120 min37%
2+ hrs12%

Performance by month

MonthFlightsOn-timeAvg delay
2025-112286%+9 min
2025-121883%+3 min
2026-01250%+55 min

Performance by day of week

DayFlightsOn-time
Mon786%
Tue6100%
Wed875%
Thu875%
Fri683%
SatNo data—
Sun786%

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