Nonstop flights from Ontario to Portland
Alaska Airlines flies this route 3 times a day.
ONTOntario International
839 mi · 21 flights a week
PDXPortland International
When they leave
Ontario time7:00a5:32pFirst departure 7:00 AM, last 5:32 PM
Two in the morning, 7:00 AM to 10:54 AM, then one evening flight at 5:32 PM. Every flight runs daily.
Every flight
Earliest first
Schedules last checked Sep 19, 2026. Times are local.
Flying from Ontario to Portland
Alaska Airlines is the only airline flying nonstop from Ontario to Portland, 3 times a day on the Embraer 175 and Boeing 737.
The first arrival in Portland is at 9:21 AM and the last at 7:49 PM. The flight covers 839 miles.
Flying back, Portland to Ontario has 21 nonstop flights a week.
Return flights
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Schedules as of Oct 9, 2026.