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

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

Among 441 scheduled Southwest Airlines flights from MIA to STL, 66.4% arrived on time, 20.6% 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 SIGNALVariable
66.4%arrived on time
20.6%30+ min late
0.5%cancelled
441scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late20.6%
60+ minutes late12.5%
Cancelled0.5%
Average arrival+15.1 mincompleted flights

What did Southwest Airlines MIA to STL record?

Southwest Airlines completed 99.3% of its scheduled reportable MIA to STL flights in the observation window. 66.4% of all scheduled flights arrived less than 15 minutes late, while 12.5% arrived at least an hour late.

What were Southwest Airlines MIA to STL disruption rates?

For Southwest Airlines MIA-to-STL flights, 20.6% arrived at least 30 minutes late, 0.5% were cancelled, and 0.2% were diverted.

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What was the Southwest Airlines MIA to STL scheduled cohort?

The Southwest Airlines MIA-to-STL cohort contained 441 scheduled flights; 438 completed, 2 were cancelled, and 1 were diverted.

Not a prediction.

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