Cheap flights from San José to North Seattle from CA $237

View CA $237 flight on Mon, Jan. 26, 2026Opens in a new window

Popular airlines from San José to North Seattle

  • Air Canada

    Air Canada

  • WestJet

    WestJet

  • Flair Airlines

    Flair Airlines

  • American Airlines

    American Airlines

  • United

    United

  • Delta

    Delta

  • Porter Airlines

    Porter Airlines

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Cheap flights from San José (SJO) to North Seattle (SEA)

Prices were available within the past 7 days and start at CA $237 for one-way flights and CA $692 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Dec. 23 - Tue, Jan. 6
SJO
San José
SEA
Seattle
CA $692 Roundtrip, found 5 days ago
CA $692
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Dec. 23 from San José to Seattle, returning Tue, Jan. 6, priced at CA $692 found 5 days ago
Alaska Airlines
Tue, Dec. 23 - Tue, Jan. 6
SJO
San José
SEA
Seattle
CA $707 Roundtrip, found 5 days ago
CA $707
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Dec. 23 from San José to Seattle, returning Tue, Jan. 6, priced at CA $707 found 5 days ago
Alaska Airlines
Tue, Dec. 23 - Tue, Jan. 6
SJO
San José
SEA
Seattle
CA $772 Roundtrip, found 5 days ago
CA $772
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Dec. 23 from San José to Seattle, returning Tue, Jan. 6, priced at CA $772 found 5 days ago
American Airlines
Mon, Dec. 22 - Sun, Jan. 4
SJO
San José
SEA
Seattle
CA $829 Roundtrip, found 5 days ago
CA $829
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Dec. 22 from San José to Seattle, returning Sun, Jan. 4, priced at CA $829 found 5 days ago
Air Canada
Tue, Dec. 23 - Tue, Jan. 6
SJO
San José
SEA
Seattle
CA $1,230 Roundtrip, found 5 days ago
CA $1,230
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Dec. 23 from San José to Seattle, returning Tue, Jan. 6, priced at CA $1,230 found 5 days ago
avianca
Tue, Dec. 23 - Tue, Jan. 6
SJO
San José
PAE
Seattle
CA $1,597 Roundtrip, found 5 days ago
CA $1,597
Roundtrip
found 5 days ago
Select avianca flight, departing Tue, Dec. 23 from San José to Seattle, returning Tue, Jan. 6, priced at CA $1,597 found 5 days ago

Find the cheapest month to fly from San José (SJO) to Seattle (SEA)

September is typically the cheapest month to fly

From CA $467 - CA $912 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.