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

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

A dedicated historical view of 441 Southwest Airlines marketed flights on this direction during July 2025–June 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 this airline-route sample says

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.

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.