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

Southwest Airlines St. Louis, MO (STL) to Miami, FL (MIA) reliability

Among 442 scheduled Southwest Airlines flights from STL to MIA, 74.9% arrived on time, 13.1% arrived at least 30 minutes late, and 0.5% 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
74.9%arrived on time
13.1%30+ min late
0.5%cancelled
442scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late13.1%
60+ minutes late5.4%
Cancelled0.5%
Average arrival+6.6 mincompleted flights

What did Southwest Airlines STL to MIA record?

Southwest Airlines completed 99.1% of its scheduled reportable STL to MIA flights in the observation window. 74.9% of all scheduled flights arrived less than 15 minutes late, while 5.4% arrived at least an hour late.

What were Southwest Airlines STL to MIA disruption rates?

For Southwest Airlines STL-to-MIA flights, 13.1% arrived at least 30 minutes late, 0.5% were cancelled, and 0.5% were diverted.

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What was the Southwest Airlines STL to MIA scheduled cohort?

The Southwest Airlines STL-to-MIA cohort contained 442 scheduled flights; 438 completed, 2 were cancelled, and 2 were diverted.

Not a prediction.

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