Cheap flights from Toronto to Cascade Loop Scenic Byway from CA $277

View CA $277 flight on Tue, Sep. 30, 2025Opens in a new window

Popular airlines from Toronto to Cascade Loop Scenic Byway

  • WestJet

    WestJet

  • Alaska Airlines

    Alaska Airlines

  • American Airlines

    American Airlines

  • Delta

    Delta

  • Air Canada

    Air Canada

  • United

    United

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Cheap flights from Toronto (YTO) to Cascade Loop Scenic Byway (SEA)

Prices were available within the past 7 days and start at CA $277 for one-way flights and CA $671 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Fri., Aug. 15 - Fri., Aug. 22
YYZ
Toronto
BLI
Bellingham
CA $671 Roundtrip, found 5 days ago
CA $671
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri., Aug. 15 from Toronto to Bellingham, returning Fri., Aug. 22, priced at CA $671 found 5 days ago
Porter Airlines
Tue., Aug. 12 - Sat., Aug. 16
YYZ
Toronto
PAE
Seattle
CA $682 Roundtrip, found 1 hour ago
CA $682
Roundtrip
found 1 hour ago
Select Porter Airlines flight, departing Tue., Aug. 12 from Toronto to Seattle, returning Sat., Aug. 16, priced at CA $682 found 1 hour ago
Porter Airlines
Sat., Jul. 19 - Mon., Jul. 21
YYZ
Toronto
PAE
Seattle
CA $700 Roundtrip, just found
CA $700
Roundtrip
just found
Select Porter Airlines flight, departing Sat., Jul. 19 from Toronto to Seattle, returning Mon., Jul. 21, priced at CA $700 just found
Alaska Airlines
Fri., Aug. 15 - Sun., Aug. 31
YYZ
Toronto
EAT
Wenatchee
CA $701 Roundtrip, found 2 days ago
CA $701
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri., Aug. 15 from Toronto to Wenatchee, returning Sun., Aug. 31, priced at CA $701 found 2 days ago
American Airlines
Sun., Aug. 10 - Mon., Aug. 25
YYZ
Toronto
EAT
Wenatchee
CA $724 Roundtrip, found 2 days ago
CA $724
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun., Aug. 10 from Toronto to Wenatchee, returning Mon., Aug. 25, priced at CA $724 found 2 days ago
WestJet
Fri., Aug. 15 - Mon., Aug. 18
YKF
Kitchener
PAE
Seattle
CA $794 Roundtrip, found 4 days ago
CA $794
Roundtrip
found 4 days ago
Select WestJet flight, departing Fri., Aug. 15 from Kitchener to Seattle, returning Mon., Aug. 18, priced at CA $794 found 4 days ago

Find the cheapest month to fly from Toronto (YTO) to Seattle (SEA)

May is typically the cheapest month to fly

From CA $245 - CA $467 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.