Portland to Ontario
PDXONT
Fly from Portland to Ontario starting at USD 94 with Southwest Airlines.
Best fare available on Sep 23, 2026.
Limited seats. Better plans. Book before it's gone.
Portland to Ontario cheapest flights this week
Portland to Ontario monthly flight fare trend
Sep
from USD 94
Oct
from USD 179
Nov
No flights
Dec
No flights
Jan
No flights
Feb
No flights
Airport Details
Origin
Portland
Portland International Airport (PDX)
Portland, PDX
Zone
Los Angeles
Elev
31 ft
Destination
Ontario
Ontario International Airport (ONT)
Ontario, ONT
Zone
Los Angeles
Elev
944 ft
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