Cheap flights from Denver to San Juan Island from CA $107

View CA $107 flight on Thu, Oct. 2, 2025Opens in a new window

Popular airlines from Denver 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 Denver (DEN) to San Juan Island (SEA)

Prices were available within the past 7 days and start at CA $107 for one-way flights and CA $213 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Oct. 18 - Sat, Oct. 25
DEN
Denver
SEA
Seattle
CA $213 Roundtrip, found 1 hour ago
CA $213
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Oct. 18 from Denver to Seattle, returning Sat, Oct. 25, priced at CA $213 found 1 hour ago
Delta
Sat, Oct. 18 - Sat, Oct. 25
DEN
Denver
SEA
Seattle
CA $214 Roundtrip, found 1 hour ago
CA $214
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Oct. 18 from Denver to Seattle, returning Sat, Oct. 25, priced at CA $214 found 1 hour ago
Delta
Sat, Sep. 6 - Thu, Sep. 25
DEN
Denver
SEA
Seattle
CA $217 Roundtrip, found 5 days ago
CA $217
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Sep. 6 from Denver to Seattle, returning Thu, Sep. 25, priced at CA $217 found 5 days ago
American Airlines
Sat, Oct. 18 - Sat, Oct. 25
DEN
Denver
SEA
Seattle
CA $240 Roundtrip, found 1 hour ago
CA $240
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sat, Oct. 18 from Denver to Seattle, returning Sat, Oct. 25, priced at CA $240 found 1 hour ago
Hawaiian Airlines
Fri, Aug. 22 - Sat, Aug. 23
DEN
Denver
SEA
Seattle
CA $252 Roundtrip, found 1 day ago
CA $252
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Fri, Aug. 22 from Denver to Seattle, returning Sat, Aug. 23, priced at CA $252 found 1 day ago
United
Sun, Aug. 24 - Mon, Aug. 25
DEN
Denver
SEA
Seattle
CA $334 Roundtrip, found 1 day ago
CA $334
Roundtrip
found 1 day ago
Select United flight, departing Sun, Aug. 24 from Denver to Seattle, returning Mon, Aug. 25, priced at CA $334 found 1 day ago
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