ONT → PDX: cancellations & delays
Over Jan 2023 - Apr 2026, 1.5% of Ontario International Airport (ONT) to Portland International Airport (PDX) flights were cancelled and 13.0% arrived at least 15 minutes late, across 1,822 flights, flown by AS, OO, F9, WN. Cancellations peak in January.
Check today's live ONT departures →Airport pages: Ontario International Airport (ONT) · Portland International Airport (PDX)
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.