Cheap flights from Portland to Mont-Cascades

View AU$246 flight on Thu, 14 Aug. 2025Opens in a new window

Popular airlines from Portland to Mont-Cascades

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Cheap Flights from Portland (PDX) to Mont-Cascades (YOW)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, 18 Aug. - Wed, 27 Aug.
PDX
Portland
YOW
Ottawa
AU$518 Return, found 6 days ago
AU$518
Return
found 6 days ago
Select United flight, departing Mon, 18 Aug. from Portland to Ottawa, returning Wed, 27 Aug., priced at AU$518 found 6 days ago
United
Thu, 14 Aug. - Mon, 18 Aug.
PDX
Portland
YOW
Ottawa
AU$521 Return, found 5 days ago
AU$521
Return
found 5 days ago
Select United flight, departing Thu, 14 Aug. from Portland to Ottawa, returning Mon, 18 Aug., priced at AU$521 found 5 days ago
Air Canada
Thu, 14 Aug. - Fri, 15 Aug.
PDX
Portland
YOW
Ottawa
AU$535 Return, found 6 days ago
AU$535
Return
found 6 days ago
Select Air Canada flight, departing Thu, 14 Aug. from Portland to Ottawa, returning Fri, 15 Aug., priced at AU$535 found 6 days ago
United
Mon, 18 Aug. - Wed, 27 Aug.
PDX
Portland
YOW
Ottawa
AU$548 Return, found 6 days ago
AU$548
Return
found 6 days ago
Select United flight, departing Mon, 18 Aug. from Portland to Ottawa, returning Wed, 27 Aug., priced at AU$548 found 6 days ago
Alaska Airlines
Mon, 18 Aug. - Wed, 27 Aug.
PDX
Portland
YOW
Ottawa
AU$715 Return, found 6 days ago
AU$715
Return
found 6 days ago
Select Alaska Airlines flight, departing Mon, 18 Aug. from Portland to Ottawa, returning Wed, 27 Aug., priced at AU$715 found 6 days ago
WestJet
Mon, 18 Aug. - Wed, 27 Aug.
PDX
Portland
YOW
Ottawa
AU$867 Return, found 6 days ago
AU$867
Return
found 6 days ago
Select WestJet flight, departing Mon, 18 Aug. from Portland to Ottawa, returning Wed, 27 Aug., priced at AU$867 found 6 days ago

Find the cheapest month to fly from Portland (PDX) to Ottawa (YOW)

October is typically the cheapest month to fly

From AU$397 - AU$1,095 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.