Alaska Airlines Flights from Denver to Seattle

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Lowest fares from Denver to Seattle

Jun 2025
From$149*
Seen: 14 hours ago
Flight Type One Way|Saver
$18
$304
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Range$18-$304

*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

One-way low-fare flights Denver to Seattle.*

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One-way low-fare flights Denver to Seattle.*
From
To
Fare Type
Dates
Price
Denver (DEN)Seattle (SEA)One-way
|
Saver		Depart: Jul 7, 2025

From

$18

Seen: 1 hour ago

Denver (DEN)Seattle (SEA)One-way
|
Saver		Depart: Aug 20, 2025

From

$79

Seen: 1 day ago

Denver (DEN)Seattle (SEA)One-way
|
Saver		Depart: Oct 1, 2025

From

$79

Seen: 12 hours ago

Denver (DEN)Seattle (SEA)One-way
|
Saver		Depart: Oct 14, 2025

From

$79

Seen: 14 hours ago

Denver (DEN)Seattle (SEA)One-way
|
Saver		Depart: Oct 23, 2025

From

$87

Seen: 1 day ago

Denver (DEN)Seattle (SEA)One-way
|
Saver		Depart: Oct 16, 2025

From

$87

Seen: 12 hours ago

Denver (DEN)Seattle (SEA)One-way
|
Saver		Depart: Aug 22, 2025

From

$87

Seen: 1 day ago

Denver (DEN)Seattle (SEA)One-way
|
Saver		Depart: Jul 30, 2025

From

$89

Seen: 3 hours ago

*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

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