Cheap flights from Copenhagen to Northwest Washington from CA $524

View CA $524 flight on Sat, Aug. 16, 2025Opens in a new window

Popular airlines from Copenhagen to Northwest Washington

  • 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 Copenhagen (CPH) to Northwest Washington (SEA)

Prices were available within the past 7 days and start at CA $524 for one-way flights and CA $790 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Aug. 16 - Sun, Aug. 24
CPH
Copenhagen
SEA
Seattle
CA $790 Roundtrip, found 1 day ago
CA $790
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Aug. 16 from Copenhagen to Seattle, returning Sun, Aug. 24, priced at CA $790 found 1 day ago
Icelandair
Sat, Aug. 30 - Wed, Sep. 3
CPH
Copenhagen
SEA
Seattle
CA $808 Roundtrip, found 17 hours ago
CA $808
Roundtrip
found 17 hours ago
Select Icelandair flight, departing Sat, Aug. 30 from Copenhagen to Seattle, returning Wed, Sep. 3, priced at CA $808 found 17 hours ago
Lufthansa
Wed, Aug. 20 - Fri, Sep. 5
CPH
Copenhagen
SEA
Seattle
CA $818 Roundtrip, found 5 days ago
CA $818
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Wed, Aug. 20 from Copenhagen to Seattle, returning Fri, Sep. 5, priced at CA $818 found 5 days ago
Air Canada
Sun, Sep. 7 - Sun, Sep. 21
CPH
Copenhagen
SEA
Seattle
CA $819 Roundtrip, found 1 day ago
CA $819
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sun, Sep. 7 from Copenhagen to Seattle, returning Sun, Sep. 21, priced at CA $819 found 1 day ago
American Airlines
Sat, Aug. 30 - Wed, Sep. 3
CPH
Copenhagen
SEA
Seattle
CA $819 Roundtrip, found 17 hours ago
CA $819
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sat, Aug. 30 from Copenhagen to Seattle, returning Wed, Sep. 3, priced at CA $819 found 17 hours ago
Delta
Sun, Sep. 7 - Sun, Sep. 21
CPH
Copenhagen
SEA
Seattle
CA $872 Roundtrip, found 1 day ago
CA $872
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Sep. 7 from Copenhagen to Seattle, returning Sun, Sep. 21, priced at CA $872 found 1 day ago
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