Cheap flights from Chicago to San Juan Island from CA $122

View CA $122 flight on Fri, Oct. 31, 2025Opens in a new window

Popular airlines from Chicago to San Juan Island

  • 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 Chicago (CHI) to San Juan Island (SEA)

Prices were available within the past 7 days and start at CA $122 for one-way flights and CA $249 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Nov. 19 - Wed, Nov. 19
ORD
Chicago
SEA
Seattle
CA $249 Roundtrip, found 10 hours ago
CA $249
Roundtrip
found 10 hours ago
Select Alaska Airlines flight, departing Wed, Nov. 19 from Chicago to Seattle, returning Wed, Nov. 19, priced at CA $249 found 10 hours ago
Delta
Tue, Nov. 18 - Thu, Nov. 27
ORD
Chicago
SEA
Seattle
CA $251 Roundtrip, found 10 hours ago
CA $251
Roundtrip
found 10 hours ago
Select Delta flight, departing Tue, Nov. 18 from Chicago to Seattle, returning Thu, Nov. 27, priced at CA $251 found 10 hours ago
American Airlines
Fri, Oct. 31 - Sat, Nov. 8
ORD
Chicago
SEA
Seattle
CA $252 Roundtrip, found 2 days ago
CA $252
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Oct. 31 from Chicago to Seattle, returning Sat, Nov. 8, priced at CA $252 found 2 days ago
Delta
Sat, Sep. 20 - Sat, Sep. 20
ORD
Chicago
SEA
Seattle
CA $252 Roundtrip, found 5 days ago
CA $252
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Sep. 20 from Chicago to Seattle, returning Sat, Sep. 20, priced at CA $252 found 5 days ago
Hawaiian Airlines
Fri, Oct. 31 - Sat, Nov. 15
ORD
Chicago
SEA
Seattle
CA $252 Roundtrip, found 3 days ago
CA $252
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Fri, Oct. 31 from Chicago to Seattle, returning Sat, Nov. 15, priced at CA $252 found 3 days ago
United
Sat, Nov. 22 - Wed, Nov. 26
ORD
Chicago
SEA
Seattle
CA $381 Roundtrip, found 10 hours ago
CA $381
Roundtrip
found 10 hours ago
Select United flight, departing Sat, Nov. 22 from Chicago to Seattle, returning Wed, Nov. 26, priced at CA $381 found 10 hours ago
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