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

Southwest Airlines Philadelphia, PA (PHL) to St. Louis, MO (STL) reliability

Among 725 scheduled Southwest Airlines flights from PHL to STL, 78.1% arrived on time, 13.9% 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
78.1%arrived on time
13.9%30+ min late
0.3%cancelled
725scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late13.9%
60+ minutes late6.6%
Cancelled0.3%
Average arrival+8.9 mincompleted flights

What did Southwest Airlines PHL to STL record?

Southwest Airlines completed 99.6% of its scheduled reportable PHL to STL flights in the observation window. 78.1% of all scheduled flights arrived less than 15 minutes late, while 6.6% arrived at least an hour late.

What were Southwest Airlines PHL to STL disruption rates?

For Southwest Airlines PHL-to-STL flights, 13.9% arrived at least 30 minutes late, 0.3% were cancelled, and 0.1% were diverted.

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What was the Southwest Airlines PHL to STL scheduled cohort?

The Southwest Airlines PHL-to-STL cohort contained 725 scheduled flights; 722 completed, 2 were cancelled, and 1 were diverted.

Not a prediction.

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