WN3552 MCI → STL

Southwest Airlines · Kansas City, MO to St. Louis, MO · 55 flights observed, 2025-11-02 to 2026-01-05 · 237 mi

This flight's reliability varies a lot by day of week — 100% on-time on Wednesdays vs. 63% on Thursdays.

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

On-time arrival
85%
Median delay
-7 min
90th percentile
+27 min
Cancellation rate
0%

How often is WN3552 on time?

Across 55 flights on MCI → STL from 2025-11-02 to 2026-01-05, WN3552 arrived within 15 minutes of schedule 85% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +27 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time4785%
16-30 min35%
31-60 min47%
61-120 min00%
2+ hrs12%

Performance by month

MonthFlightsOn-timeAvg delay
2025-112488%+2 min
2025-122781%0 min
2026-014100%-6 min

Performance by day of week

DayFlightsOn-time
Mon1090%
Tue989%
Wed9100%
Thu863%
Fri989%
SatNo data—
Sun1080%

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