Alaska Airlines Flights from Chicago to Seattle

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Lowest fares from Chicago to Seattle

Jun 2025
From$135*
Seen: 7 hours ago
Flight Type One Way|Saver
$104
$340
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Range$104-$340

*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 Chicago to Seattle.*

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One-way low-fare flights Chicago to Seattle.*
From
To
Fare Type
Dates
Price
Chicago (ORD)Seattle (SEA)One-way
|
Saver		Depart: Aug 13, 2025

From

$55

Seen: 2 hours ago

Chicago (ORD)Seattle (SEA)One-way
|
Saver		Depart: Oct 4, 2025

From

$63

Seen: 3 hours ago

Chicago (ORD)Seattle (SEA)One-way
|
Saver		Depart: Nov 8, 2025

From

$63

Seen: 1 hour ago

Chicago (ORD)Seattle (SEA)One-way
|
Saver		Depart: Oct 24, 2025

From

$79

Seen: 7 hours ago

Chicago (ORD)Seattle (SEA)One-way
|
Saver		Depart: Sep 7, 2025

From

$88

Seen: 3 hours ago

Chicago (ORD)Seattle (SEA)One-way
|
Saver		Depart: Sep 9, 2025

From

$88

Seen: 8 hours ago

Chicago (ORD)Seattle (SEA)One-way
|
Saver		Depart: Aug 31, 2025

From

$88

Seen: 48 minutes ago

Chicago (ORD)Seattle (SEA)One-way
|
Saver		Depart: Jul 30, 2025

From

$95

Seen: 1 day 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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