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

Southwest Airlines St. Louis, MO (STL) to Houston, TX (HOU) reliability

Among 1,533 scheduled Southwest Airlines flights from STL to HOU, 78.9% arrived on time, 12.1% arrived at least 30 minutes late, and 0.2% 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
78.9%arrived on time
12.1%30+ min late
0.2%cancelled
1,533scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late12.1%
60+ minutes late6.0%
Cancelled0.2%
Average arrival+2.4 mincompleted flights

What did Southwest Airlines STL to HOU record?

Southwest Airlines completed 99.5% of its scheduled reportable STL to HOU flights in the observation window. 78.9% of all scheduled flights arrived less than 15 minutes late, while 6.0% arrived at least an hour late.

What were Southwest Airlines STL to HOU disruption rates?

For Southwest Airlines STL-to-HOU flights, 12.1% arrived at least 30 minutes late, 0.2% were cancelled, and 0.3% were diverted.

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What was the Southwest Airlines STL to HOU scheduled cohort?

The Southwest Airlines STL-to-HOU cohort contained 1,533 scheduled flights; 1,525 completed, 3 were cancelled, and 5 were diverted.

Not a prediction.

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