WN1440 STL → MCI

Southwest Airlines · St. Louis, MO to Kansas City, MO · 46 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 Fridays vs. 38% on Wednesdays.

WN1440 covers more than one route in the data window — the stats below are for STL → MCI, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
76%
Median delay
-4 min
90th percentile
+32 min
Cancellation rate
0%

How often is WN1440 on time?

Across 46 flights on STL → MCI from 2025-11-02 to 2026-01-05, WN1440 arrived within 15 minutes of schedule 76% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +32 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3576%
16-30 min613%
31-60 min37%
61-120 min00%
2+ hrs24%

Performance by month

MonthFlightsOn-timeAvg delay
2025-112488%-3 min
2025-122060%+16 min
2026-012100%-1 min

Performance by day of week

DayFlightsOn-time
Mon786%
Tue683%
Wed838%
Thu875%
Fri6100%
Sat475%
Sun786%

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