BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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AIRLINE × ROUTE REPORT
PWM→ORD

United Airlines Portland, ME (PWM) to Chicago, IL (ORD) reliability

Among 428 scheduled United Airlines flights from PWM to ORD, 74.8% arrived on time, 13.6% arrived at least 30 minutes late, and 2.1% 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
74.8%arrived on time
13.6%30+ min late
2.1%cancelled
428scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late13.6%
60+ minutes late8.2%
Cancelled2.1%
Average arrival+17.0 mincompleted flights

What did United Airlines PWM to ORD record?

United Airlines completed 97.7% of its scheduled reportable PWM to ORD flights in the observation window. 74.8% of all scheduled flights arrived less than 15 minutes late, while 8.2% arrived at least an hour late.

What were United Airlines PWM to ORD disruption rates?

For United Airlines PWM-to-ORD flights, 13.6% arrived at least 30 minutes late, 2.1% were cancelled, and 0.2% were diverted.

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What was the United Airlines PWM to ORD scheduled cohort?

The United Airlines PWM-to-ORD cohort contained 428 scheduled flights; 418 completed, 9 were cancelled, and 1 were diverted.

Not a prediction.

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