PWM → ORD: cancellations & delays
Over Jan 2023 - Apr 2026, 2.0% of Portland International Jetport (PWM) to Chicago O'Hare International Airport (ORD) flights were cancelled and 21.8% arrived at least 15 minutes late, across 3,632 flights, flown by UA, YX, OO, MQ, F9. Cancellations peak in March.
Check today's live PWM departures →Airport pages: Portland International Jetport (PWM) · Chicago O'Hare International Airport (ORD)
Rates are historical averages from U.S. DOT (BTS) on-time records; a specific flight's live estimate can differ with weather and the day's disruptions.