BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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STL→DTW

Southwest Airlines St. Louis, MO (STL) to Detroit, MI (DTW) reliability

Among 593 scheduled Southwest Airlines flights from STL to DTW, 73.4% arrived on time, 16.4% arrived at least 30 minutes late, and 0.3% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Marketing carrier: Southwest Airlines (WN) · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
73.4%arrived on time
16.4%30+ min late
0.3%cancelled
593scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late16.4%
60+ minutes late9.1%
Cancelled0.3%
Average arrival+13.1 mincompleted flights

What did Southwest Airlines STL to DTW record?

Southwest Airlines completed 99.7% of its scheduled reportable STL to DTW flights in the observation window. 73.4% of all scheduled flights arrived less than 15 minutes late, while 9.1% arrived at least an hour late.

What were Southwest Airlines STL to DTW disruption rates?

For Southwest Airlines STL-to-DTW flights, 16.4% arrived at least 30 minutes late, 0.3% were cancelled, and 0.0% were diverted.

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What was the Southwest Airlines STL to DTW scheduled cohort?

The Southwest Airlines STL-to-DTW cohort contained 593 scheduled flights; 591 completed, 2 were cancelled, and 0 were diverted.

Not a prediction.

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