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

Southwest Airlines Detroit, MI (DTW) to St. Louis, MO (STL) reliability

Among 593 scheduled Southwest Airlines flights from DTW to STL, 75.5% arrived on time, 14.5% arrived at least 30 minutes late, and 0.5% 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
75.5%arrived on time
14.5%30+ min late
0.5%cancelled
593scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late14.5%
60+ minutes late6.2%
Cancelled0.5%
Average arrival+4.7 mincompleted flights

What did Southwest Airlines DTW to STL record?

Southwest Airlines completed 99.5% of its scheduled reportable DTW to STL flights in the observation window. 75.5% of all scheduled flights arrived less than 15 minutes late, while 6.2% arrived at least an hour late.

What were Southwest Airlines DTW to STL disruption rates?

For Southwest Airlines DTW-to-STL flights, 14.5% arrived at least 30 minutes late, 0.5% were cancelled, and 0.0% were diverted.

Compare all airlines on this route

What was the Southwest Airlines DTW to STL scheduled cohort?

The Southwest Airlines DTW-to-STL cohort contained 593 scheduled flights; 590 completed, 3 were cancelled, and 0 were diverted.

Not a prediction.

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