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

United Airlines Washington, DC (IAD) to Chicago, IL (ORD) reliability

Among 2,054 scheduled United Airlines flights from IAD to ORD, 74.4% arrived on time, 15.1% 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
15.1%30+ min late
0.8%cancelled
2,054scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late15.1%
60+ minutes late8.1%
Cancelled0.8%
Average arrival+12.0 mincompleted flights

What did United Airlines IAD to ORD record?

United Airlines completed 98.9% of its scheduled reportable IAD to ORD flights in the observation window. 74.4% of all scheduled flights arrived less than 15 minutes late, while 8.1% arrived at least an hour late.

What were United Airlines IAD to ORD disruption rates?

For United Airlines IAD-to-ORD flights, 15.1% arrived at least 30 minutes late, 0.8% were cancelled, and 0.2% were diverted.

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What was the United Airlines IAD to ORD scheduled cohort?

The United Airlines IAD-to-ORD cohort contained 2,054 scheduled flights; 2,032 completed, 17 were cancelled, and 5 were diverted.

Not a prediction.

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