WN3243 STL → LAX

Southwest Airlines · St. Louis, MO to Los Angeles, CA · 42 flights observed, 2026-04-07 to 2026-06-03 · 1,592 mi

This flight's reliability varies a lot by day of week — 89% on-time on Tuesdays vs. 50% on Mondays.

WN3243 covers more than one route in the data window — the stats below are for STL → LAX, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
81%
Median delay
+3 min
90th percentile
+31 min
Cancellation rate
0%

How often is WN3243 on time?

Across 42 flights on STL → LAX from 2026-04-07 to 2026-06-03, WN3243 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was +3 min, and the worst 10% of flights arrived +31 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3481%
16-30 min37%
31-60 min410%
61-120 min12%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2026-041878%+10 min
2026-052186%0 min
2026-06367%+10 min

Performance by day of week

DayFlightsOn-time
Mon850%
Tue989%
Wed989%
Thu888%
Fri888%
SatNo data—
SunNo data—

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