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

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

Among 1,544 scheduled Southwest Airlines flights from HOU to STL, 79.3% arrived on time, 12.0% arrived at least 30 minutes late, and 0.3% 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
79.3%arrived on time
12.0%30+ min late
0.3%cancelled
1,544scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late12.0%
60+ minutes late5.6%
Cancelled0.3%
Average arrival+5.1 mincompleted flights

What did Southwest Airlines HOU to STL record?

Southwest Airlines completed 99.4% of its scheduled reportable HOU to STL flights in the observation window. 79.3% of all scheduled flights arrived less than 15 minutes late, while 5.6% arrived at least an hour late.

What were Southwest Airlines HOU to STL disruption rates?

For Southwest Airlines HOU-to-STL flights, 12.0% arrived at least 30 minutes late, 0.3% were cancelled, and 0.3% were diverted.

Compare all airlines on this route

What was the Southwest Airlines HOU to STL scheduled cohort?

The Southwest Airlines HOU-to-STL cohort contained 1,544 scheduled flights; 1,535 completed, 4 were cancelled, and 5 were diverted.

Not a prediction.

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