WN4219 PHX → ONT

Southwest Airlines · Phoenix, AZ to Ontario, CA · 14 flights observed, 2025-10-02 to 2025-10-31 · 325 mi

This flight's reliability varies a lot by day of week — 80% on-time on Thursdays vs. 40% on Fridays.

WN4219 covers more than one route in the data window — the stats below are for PHX → ONT, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
64%
Median delay
+9 min
90th percentile
+21 min
Cancellation rate
0%

How often is WN4219 on time?

Across 14 flights on PHX → ONT from 2025-10-02 to 2025-10-31, WN4219 arrived within 15 minutes of schedule 64% of the time. The median arrival delay was +9 min, and the worst 10% of flights arrived +21 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time964%
16-30 min429%
31-60 min00%
61-120 min17%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2025-101464%+13 min

Performance by day of week

DayFlightsOn-time
Mon475%
TueNo data—
WedNo data—
Thu580%
Fri540%
SatNo data—
SunNo data—

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