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

Southwest Airlines San Diego, CA (SAN) to St. Louis, MO (STL) reliability

Among 474 scheduled Southwest Airlines flights from SAN to STL, 75.5% arrived on time, 14.8% 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
75.5%arrived on time
14.8%30+ min late
0.2%cancelled
474scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late14.8%
60+ minutes late7.2%
Cancelled0.2%
Average arrival+5.3 mincompleted flights

What did Southwest Airlines SAN to STL record?

Southwest Airlines completed 99.4% of its scheduled reportable SAN to STL flights in the observation window. 75.5% of all scheduled flights arrived less than 15 minutes late, while 7.2% arrived at least an hour late.

What were Southwest Airlines SAN to STL disruption rates?

For Southwest Airlines SAN-to-STL flights, 14.8% arrived at least 30 minutes late, 0.2% were cancelled, and 0.4% were diverted.

Compare all airlines on this route

What was the Southwest Airlines SAN to STL scheduled cohort?

The Southwest Airlines SAN-to-STL cohort contained 474 scheduled flights; 471 completed, 1 were cancelled, and 2 were diverted.

Not a prediction.

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