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

Southwest Airlines Denver, CO (DEN) to St. Louis, MO (STL) reliability

Among 2,172 scheduled Southwest Airlines flights from DEN to STL, 75.9% arrived on time, 15.0% arrived at least 30 minutes late, and 0.4% 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
75.9%arrived on time
15.0%30+ min late
0.4%cancelled
2,172scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late15.0%
60+ minutes late7.5%
Cancelled0.4%
Average arrival+7.2 mincompleted flights

What did Southwest Airlines DEN to STL record?

Southwest Airlines completed 99.3% of its scheduled reportable DEN to STL flights in the observation window. 75.9% of all scheduled flights arrived less than 15 minutes late, while 7.5% arrived at least an hour late.

What were Southwest Airlines DEN to STL disruption rates?

For Southwest Airlines DEN-to-STL flights, 15.0% arrived at least 30 minutes late, 0.4% were cancelled, and 0.3% were diverted.

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What was the Southwest Airlines DEN to STL scheduled cohort?

The Southwest Airlines DEN-to-STL cohort contained 2,172 scheduled flights; 2,157 completed, 9 were cancelled, and 6 were diverted.

Not a prediction.

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