Cheap flights from San Francisco to Cascade Loop Scenic Byway from CA $123

View CA $123 flight on Wed, Sep. 10, 2025Opens in a new window

Popular airlines from San Francisco to Cascade Loop Scenic Byway

  • Alaska Airlines

    Alaska Airlines

  • Frontier Airlines

    Frontier Airlines

  • American Airlines

    American Airlines

  • Delta

    Delta

  • Southwest Airlines

    Southwest Airlines

  • United

    United

  • Spirit Airlines

    Spirit Airlines

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Cheap flights from San Francisco (SJC) to Cascade Loop Scenic Byway (SEA)

Prices were available within the past 7 days and start at CA $123 for one-way flights and CA $187 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Sep. 13 - Sat, Sep. 20
SFO
San Francisco
PAE
Seattle
CA $187 Roundtrip, found 3 days ago
CA $187
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Sep. 13 from San Francisco to Seattle, returning Sat, Sep. 20, priced at CA $187 found 3 days ago
Hawaiian Airlines
Sat, Sep. 27 - Sat, Oct. 11
SFO
San Francisco
PAE
Seattle
CA $188 Roundtrip, found 1 day ago
CA $188
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sat, Sep. 27 from San Francisco to Seattle, returning Sat, Oct. 11, priced at CA $188 found 1 day ago
Alaska Airlines
Sat, Sep. 20 - Wed, Sep. 24
SFO
San Francisco
PAE
Seattle
CA $189 Roundtrip, found 1 day ago
CA $189
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Sep. 20 from San Francisco to Seattle, returning Wed, Sep. 24, priced at CA $189 found 1 day ago
Alaska Airlines
Wed, Sep. 10 - Wed, Sep. 17
SFO
San Francisco
PAE
Seattle
CA $190 Roundtrip, just found
CA $190
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Sep. 10 from San Francisco to Seattle, returning Wed, Sep. 17, priced at CA $190 just found
Hawaiian Airlines
Tue, Aug. 19 - Sun, Aug. 31
SFO
San Francisco
PAE
Seattle
CA $200 Roundtrip, found 3 days ago
CA $200
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Tue, Aug. 19 from San Francisco to Seattle, returning Sun, Aug. 31, priced at CA $200 found 3 days ago
American Airlines
Sat, Sep. 13 - Sat, Sep. 20
SFO
San Francisco
PAE
Seattle
CA $298 Roundtrip, found 5 days ago
CA $298
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Sep. 13 from San Francisco to Seattle, returning Sat, Sep. 20, priced at CA $298 found 5 days ago

Find the cheapest month to fly from San Francisco (SFO) to Seattle (SEA)

January is typically the cheapest month to fly

From CA $133 - CA $257 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.