BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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AIRLINE × ROUTE REPORT
STLDSM

Southwest Airlines St. Louis, MO (STL) to Des Moines, IA (DSM) reliability

A dedicated historical view of 460 Southwest Airlines marketed flights on this direction during July 2025–June 2026.

HISTORICAL ROUTE SIGNALGenerally reliable
79.8%arrived on time
11.5%30+ min late
0.4%cancelled
460scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late11.5%
60+ minutes late4.8%
Cancelled0.4%
Average arrival+1.9 mincompleted flights

What this airline-route sample says

Southwest Airlines completed 99.1% of its scheduled reportable STL to DSM flights in the observation window. 79.8% of all scheduled flights arrived less than 15 minutes late, while 4.8% arrived at least an hour late.

Use the parent route report to compare this result with other marketing carriers and with time-of-day, weekday and monthly slices.

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Not a prediction.

This is a descriptive historical rate. Schedule changes, seasonal operations and current conditions may differ.