Cheap flights from Ottawa to Cascade Loop Scenic Byway from CA $441

View CA $441 flight on Wed, Nov. 5, 2025Opens in a new window

Popular airlines from Ottawa to Cascade Loop Scenic Byway

  • WestJet

    WestJet

  • Air Canada

    Air Canada

  • United

    United

  • Delta

    Delta

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Cheap flights from Ottawa (YOW) to Cascade Loop Scenic Byway (SEA)

Prices were available within the past 7 days and start at CA $441 for one-way flights and CA $799 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Porter Airlines
Sat, Nov. 15 - Mon, Nov. 17
YOW
Ottawa
PAE
Seattle
CA $799 Roundtrip, found 1 day ago
CA $799
Roundtrip
found 1 day ago
Select Porter Airlines flight, departing Sat, Nov. 15 from Ottawa to Seattle, returning Mon, Nov. 17, priced at CA $799 found 1 day ago
Porter Airlines
Sat, Nov. 15 - Mon, Nov. 17
YOW
Ottawa
PAE
Seattle
CA $854 Roundtrip, found 3 days ago
CA $854
Roundtrip
found 3 days ago
Select Porter Airlines flight, departing Sat, Nov. 15 from Ottawa to Seattle, returning Mon, Nov. 17, priced at CA $854 found 3 days ago
Porter Airlines
Tue, Dec. 2 - Wed, Dec. 3
YOW
Ottawa
PAE
Seattle
CA $858 Roundtrip, found 2 days ago
CA $858
Roundtrip
found 2 days ago
Select Porter Airlines flight, departing Tue, Dec. 2 from Ottawa to Seattle, returning Wed, Dec. 3, priced at CA $858 found 2 days ago
Porter Airlines
Sat, Nov. 15 - Mon, Nov. 17
YOW
Ottawa
PAE
Seattle
CA $866 Roundtrip, found 1 day ago
CA $866
Roundtrip
found 1 day ago
Select Porter Airlines flight, departing Sat, Nov. 15 from Ottawa to Seattle, returning Mon, Nov. 17, priced at CA $866 found 1 day ago
Porter Airlines
Fri, Nov. 7 - Wed, Nov. 12
YOW
Ottawa
PAE
Seattle
CA $871 Roundtrip, found 2 days ago
CA $871
Roundtrip
found 2 days ago
Select Porter Airlines flight, departing Fri, Nov. 7 from Ottawa to Seattle, returning Wed, Nov. 12, priced at CA $871 found 2 days ago
WestJet
Wed, Oct. 8 - Tue, Oct. 21
YOW
Ottawa
EAT
Wenatchee
CA $893 Roundtrip, found 4 hours ago
CA $893
Roundtrip
found 4 hours ago
Select WestJet flight, departing Wed, Oct. 8 from Ottawa to Wenatchee, returning Tue, Oct. 21, priced at CA $893 found 4 hours ago

Find the cheapest month to fly from Ottawa (YOW) to Seattle (SEA)

August is typically the cheapest month to fly

From CA $374 - CA $621 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.