Alaska Airlines Flights from Saint Louis to Seattle

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Lowest fares from Saint Louis to Seattle

Apr 2025
From$299*
Seen: 47 minutes ago
Flight Type One Way|Saver
$179
$324
Displaying fares for April-2025
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Range$179-$324

*Fares and availability are based on round trip searches for 1 passenger (1 adult) in Economy class in the last 48 hours. Fares are inclusive of tax and surcharges, and subject to availability.

One-way low-fare flights Saint Louis to Seattle.*

One-way low-fare flights Saint Louis to Seattle.*
From
To
Fare Type
Dates
Price
Saint Louis (STL)Seattle (SEA)One-way
|
Saver		Depart: Jun 14, 2025

From

$119

Seen: 1 day ago

Saint Louis (STL)Seattle (SEA)One-way
|
Saver		Depart: Jun 17, 2025

From

$119

Seen: 21 minutes ago

Saint Louis (STL)Seattle (SEA)One-way
|
Saver		Depart: Aug 16, 2025

From

$125

Seen: 5 hours ago

Saint Louis (STL)Seattle (SEA)One-way
|
Saver		Depart: Jun 16, 2025

From

$125

Seen: 1 day ago

Saint Louis (STL)Seattle (SEA)One-way
|
Saver		Depart: Sep 13, 2025

From

$125

Seen: 1 day ago

Saint Louis (STL)Seattle (SEA)One-way
|
Saver		Depart: Aug 6, 2025

From

$125

Seen: 1 day ago

Saint Louis (STL)Seattle (SEA)One-way
|
Saver		Depart: Aug 17, 2025

From

$125

Seen: 1 day ago

Saint Louis (STL)Seattle (SEA)One-way
|
Saver		Depart: Jul 28, 2025

From

$125

Seen: 3 hours ago

*Prices have been available for one-way trips within the last 48 hours and may not be currently available. Fares listed may be Saver fares which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

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