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

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

Among 429 scheduled United Airlines flights from ORD to PWM, 70.2% arrived on time, 19.6% arrived at least 30 minutes late, and 1.2% 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
70.2%arrived on time
19.6%30+ min late
1.2%cancelled
429scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late19.6%
60+ minutes late12.1%
Cancelled1.2%
Average arrival+14.9 mincompleted flights

What did United Airlines ORD to PWM record?

United Airlines completed 98.8% of its scheduled reportable ORD to PWM flights in the observation window. 70.2% of all scheduled flights arrived less than 15 minutes late, while 12.1% arrived at least an hour late.

What were United Airlines ORD to PWM disruption rates?

For United Airlines ORD-to-PWM flights, 19.6% arrived at least 30 minutes late, 1.2% were cancelled, and 0.0% were diverted.

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What was the United Airlines ORD to PWM scheduled cohort?

The United Airlines ORD-to-PWM cohort contained 429 scheduled flights; 424 completed, 5 were cancelled, and 0 were diverted.

Not a prediction.

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