WN3552 SAN → STL

Southwest Airlines · San Diego, CA to St. Louis, MO · 16 flights observed, 2026-06-04 to 2026-06-29 · 1,557 mi

This flight has been on time less than half the time (38%) — expect a real chance of a delay.

WN3552 covers more than one route in the data window — the stats below are for SAN → STL, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
38%
Median delay
+43 min
90th percentile
+93 min
Cancellation rate
0%

How often is WN3552 on time?

Across 16 flights on SAN → STL from 2026-06-04 to 2026-06-29, WN3552 arrived within 15 minutes of schedule 38% of the time. The median arrival delay was +43 min, and the worst 10% of flights arrived +93 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time638%
16-30 min00%
31-60 min638%
61-120 min425%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2026-061638%+40 min

Performance by day of week

DayFlightsOn-time
Mon425%
TueNo data—
WedNo data—
Thu425%
Fri425%
Sat475%
SunNo data—

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