BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
AIRLINE × ROUTE REPORT
STLMIA

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

A dedicated historical view of 442 Southwest Airlines marketed flights on this direction during July 2025–June 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 this airline-route sample says

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.

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

Compare all airlines on this route

Not a prediction.

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