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

American Airlines Chicago, IL (ORD) to St. Louis, MO (STL) reliability

Among 535 scheduled American Airlines flights from ORD to STL, 63.7% arrived on time, 25.6% arrived at least 30 minutes late, and 2.6% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Marketing carrier: American Airlines (AA) · Updated September 16, 2026

HISTORICAL ROUTE SIGNALVariable
63.7%arrived on time
25.6%30+ min late
2.6%cancelled
535scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late25.6%
60+ minutes late13.1%
Cancelled2.6%
Average arrival+24.8 mincompleted flights

What did American Airlines ORD to STL record?

American Airlines completed 97.2% of its scheduled reportable ORD to STL flights in the observation window. 63.7% of all scheduled flights arrived less than 15 minutes late, while 13.1% arrived at least an hour late.

What were American Airlines ORD to STL disruption rates?

For American Airlines ORD-to-STL flights, 25.6% arrived at least 30 minutes late, 2.6% were cancelled, and 0.2% were diverted.

Compare all airlines on this route

What was the American Airlines ORD to STL scheduled cohort?

The American Airlines ORD-to-STL cohort contained 535 scheduled flights; 520 completed, 14 were cancelled, and 1 were diverted.

Not a prediction.

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