WN4433 STL → LAS

Southwest Airlines · St. Louis, MO to Las Vegas, NV · 63 flights observed, 2025-11-02 to 2026-01-05 · 1,371 mi

This flight's reliability varies a lot by day of week — 100% on-time on Tuesdays vs. 44% on Saturdays.

WN4433 covers more than one route in the data window — the stats below are for STL → LAS, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
78%
Median delay
-4 min
90th percentile
+49 min
Cancellation rate
0%

How often is WN4433 on time?

Across 63 flights on STL → LAS from 2025-11-02 to 2026-01-05, WN4433 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +49 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time4978%
16-30 min23%
31-60 min813%
61-120 min35%
2+ hrs12%

Performance by month

MonthFlightsOn-timeAvg delay
2025-112778%+6 min
2025-123181%-1 min
2026-01560%+28 min

Performance by day of week

DayFlightsOn-time
Mon1080%
Tue9100%
Wed989%
Thu8100%
Fri989%
Sat944%
Sun944%

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