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

United Airlines Houston, TX (IAH) to St. Louis, MO (STL) reliability

Among 359 scheduled United Airlines flights from IAH to STL, 74.4% arrived on time, 15.6% arrived at least 30 minutes late, and 0.8% 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
74.4%arrived on time
15.6%30+ min late
0.8%cancelled
359scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late15.6%
60+ minutes late5.8%
Cancelled0.8%
Average arrival+9.3 mincompleted flights

What did United Airlines IAH to STL record?

United Airlines completed 98.6% of its scheduled reportable IAH to STL flights in the observation window. 74.4% of all scheduled flights arrived less than 15 minutes late, while 5.8% arrived at least an hour late.

What were United Airlines IAH to STL disruption rates?

For United Airlines IAH-to-STL flights, 15.6% arrived at least 30 minutes late, 0.8% were cancelled, and 0.6% were diverted.

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What was the United Airlines IAH to STL scheduled cohort?

The United Airlines IAH-to-STL cohort contained 359 scheduled flights; 354 completed, 3 were cancelled, and 2 were diverted.

Not a prediction.

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