Southwest® flights from Denver to Seattle/Tacoma from $59

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Low fares from Denver to Seattle/Tacoma

$

Denver (DEN)to

Seattle/Tacoma (SEA)
Depart: 05/02/2026

One-way

Basic

From
$59
Seen: 2 hrs ago

Denver (DEN)to

Seattle/Tacoma (SEA)
Depart: 04/21/2026

One-way

Basic

From
$59
Seen: 18 hrs ago

Denver (DEN)to

Seattle/Tacoma (SEA)
Depart: 04/22/2026

One-way

Basic

From
$59
Seen: 22 hrs ago

Denver (DEN)to

Seattle/Tacoma (SEA)
Depart: 05/09/2026

One-way

Basic

From
$59
Seen: 4 hrs ago

Denver (DEN)to

Seattle/Tacoma (SEA)
Depart: 04/25/2026

One-way

Basic

From
$59
Seen: 1 hour ago

Denver (DEN)to

Seattle/Tacoma (SEA)
Depart: 05/05/2026

One-way

Basic

From
$59
Seen: 1 hour ago

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Explore flights from Denver to Seattle/Tacoma

Mar 2026
From$159*
Seen: 1 hour ago
One Way/Basic
Apr 2026
From$59*
Seen: 18 hrs ago
One Way/Basic
May 2026
From$59*
Seen: 4 hrs ago
One Way/Basic
$69
$369
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    • Range$69-$369

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    Denver International Airport
    Arriving at:
    Seattle/Tacoma International Airport
    Average flight time:
    2 hours 58 minutes
    Distance:
    1024 miles

    Route Information

    155† Weekly flights
    • 4‡ Nonstop flights per day Monday through Friday
    • 3‡ Nonstop flights on Saturday
    • 3‡ Nonstop flights on Sunday

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    The average flight time from Denver to Seattle/Tacoma is 2 hours 58 minutes.
    There are 155 weekly flights from Denver to Seattle/Tacoma on Southwest Airlines.
    Yes, Southwest flies nonstop from Denver to Seattle/Tacoma 4 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Denver to Seattle/Tacoma 3 times per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Denver to Seattle/Tacoma with Southwest, check out our Low Fare Calendar.
    You can rent a car at Seattle/Tacoma International Airport book yours with your flight.
    Yes! Flights from Denver to Seattle/Tacoma—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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