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Find low faresSouthwest® flights from Louisville to Seattle/Tacoma from $179
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Low fares from Louisville to Seattle/Tacoma
$
Louisville (SDF)to
Seattle/Tacoma (SEA)
Depart: 05/06/2026
One-way
Basic
From
$179
Seen: 9 hrs ago
Louisville (SDF)to
Seattle/Tacoma (SEA)
Depart: 04/01/2026
One-way
Basic
From
$179
Seen: 15 hrs ago
Louisville (SDF)to
Seattle/Tacoma (SEA)
Depart: 04/07/2026
One-way
Basic
From
$179
Seen: 12 hrs ago
Louisville (SDF)to
Seattle/Tacoma (SEA)
Depart: 05/05/2026
One-way
Basic
From
$179
Seen: 8 hrs ago
Louisville (SDF)to
Seattle/Tacoma (SEA)
Depart: 05/02/2026
One-way
Basic
From
$193
Seen: 13 hrs ago
Louisville (SDF)to
Seattle/Tacoma (SEA)
Depart: 02/24/2026
One-way
Basic
From
$194
Seen: 5 hrs ago
Explore flights from Louisville to Seattle/Tacoma
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Flight Details
Departing from:
Louisville International Airport
Arriving at:
Seattle/Tacoma International Airport
Distance:
1945 miles
Route Information
59† Weekly flights
† 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
There are 59 weekly flights from Louisville to Seattle/Tacoma on Southwest Airlines.
To find the lowest fares by day and time to fly Louisville 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 Louisville 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.