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

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

Among 528 scheduled United Airlines flights from ORD to STL, 70.3% arrived on time, 18.6% arrived at least 30 minutes late, and 1.3% were cancelled during July 2025–June 2026.

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

HISTORICAL ROUTE SIGNALGenerally reliable
70.3%arrived on time
18.6%30+ min late
1.3%cancelled
528scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late18.6%
60+ minutes late12.3%
Cancelled1.3%
Average arrival+18.9 mincompleted flights

What did United Airlines ORD to STL record?

United Airlines completed 98.7% of its scheduled reportable ORD to STL flights in the observation window. 70.3% of all scheduled flights arrived less than 15 minutes late, while 12.3% arrived at least an hour late.

What were United Airlines ORD to STL disruption rates?

For United Airlines ORD-to-STL flights, 18.6% arrived at least 30 minutes late, 1.3% were cancelled, and 0.0% were diverted.

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What was the United Airlines ORD to STL scheduled cohort?

The United Airlines ORD-to-STL cohort contained 528 scheduled flights; 521 completed, 7 were cancelled, and 0 were diverted.

Not a prediction.

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