Nonstop flights from Portland to Ontario
Alaska Airlines flies this route 3 times a day.
PDXPortland International
839 mi · 21 flights a week
ONTOntario International
When they leave
Portland time7:15a9:31pFirst departure 7:15 AM, last 9:31 PM
Two in the morning, 7:15 AM to 7:36 AM, then two in the afternoon, 2:30 PM to 2:46 PM, then three in the evening, 5:53 PM to 9:31 PM.
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Schedules last checked Sep 19, 2026. Times are local.
Flying from Portland to Ontario
Alaska Airlines is the only airline flying nonstop from Portland to Ontario, 3 times a day on the Embraer 175, Boeing 737 MAX 9 and Boeing 737.
The first arrival in Ontario is at 9:48 AM and the last at 11:53 PM. The flight covers 839 miles.
Flying back, Ontario to Portland has 21 nonstop flights a week.
Return flights
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Schedules as of Oct 9, 2026.