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Cheap flights from Louisville to Seattle from $158

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Seattle departing on 2/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Louisville to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
12:07 pm - 11:04 pm
SDF
-
SEA
13h 57m
1 stop
American Airlines Logo
7:21 am - 11:20 pm
SEA
-
SDF
12h 59m
1 stop
$309American Airlines
Wed, Mar 11 - Tue, Mar 17
American Airlines Logo
12:07 pm - 11:04 pm
SDF
-
SEA
13h 57m
1 stop
American Airlines Logo
12:07 am - 11:32 am
SEA
-
SDF
8h 25m
1 stop
$310American Airlines
Wed, Mar 11 - Tue, Mar 24
Delta Logo
3:32 pm - 11:15 pm
SDF
-
SEA
10h 43m
1 stop
Delta Logo
8:30 am - 9:18 pm
SEA
-
SDF
9h 48m
1 stop
$321Delta
Tue, Feb 10 - Tue, Feb 17
Southwest Logo
8:55 am - 3:45 pm
SDF
-
SEA
9h 50m
2 stops
Southwest Logo
11:55 pm - 9:55 am
SEA
-
SDF
7h 00m
1 stop
$326Southwest
Wed, Mar 11 - Wed, Mar 25
American Airlines Logo
1:32 pm - 10:20 pm
SDF
-
SEA
11h 48m
1 stop
American Airlines Logo
8:04 am - 11:19 pm
SEA
-
SDF
12h 15m
1 stop
$337American Airlines
Thu, Feb 5 - Mon, Feb 9
American Airlines Logo
12:07 pm - 11:04 pm
SDF
-
SEA
13h 57m
1 stop
American Airlines Logo
7:00 am - 9:28 pm
SEA
-
SDF
11h 28m
1 stop
$339American Airlines
Wed, Apr 1 - Wed, Apr 8
Delta Logo
2:17 pm - 6:24 pm
SDF
-
SEA
7h 07m
1 stop
Delta Logo
11:15 pm - 10:10 am
SEA
-
SDF
7h 55m
1 stop
$340Delta
Wed, Mar 11 - Mon, Mar 23
United Airlines Logo
2:05 pm - 9:15 pm
SDF
-
SEA
10h 10m
2 stops
United Airlines Logo
10:55 am - 10:13 pm
SEA
-
SDF
8h 18m
1 stop
$346United Airlines
Tue, Feb 10 - Tue, Feb 17
American Airlines Logo
6:12 pm - 12:24 am
SDF
-
SEA
9h 12m
1 stop
American Airlines Logo
7:15 am - 11:16 pm
SEA
-
SDF
13h 01m
1 stop
$348American Airlines
Mon, Feb 16 - Mon, Feb 23
Delta Logo
5:55 pm - 10:02 pm
SDF
-
SEA
7h 07m
1 stop
Delta Logo
11:59 pm - 11:51 am
SEA
-
SDF
8h 52m
1 stop
$359Delta
Mon, Mar 9 - Thu, Mar 26

Southwest flights from Louisville to Seattle

Our best Southwest deals on Louisville to Seattle flight tickets
Southwest
Mar 11
SDF8:55 amLouisville Intl
9h 50m
2 stops
SEA3:45 pmSeattle/Tacoma Intl
Mar 25
SEA11:55 pmSeattle/Tacoma Intl
7h 00m
1 stop
SDF9:55 amLouisville Intl
$326
Southwest
Apr 18
SDF1:45 pmLouisville Intl
7h 30m
1 stop
SEA6:15 pmSeattle/Tacoma Intl
Apr 20
SEA9:00 pmSeattle/Tacoma Intl
9h 50m
2 stops
SDF9:50 amLouisville Intl
$364
Southwest
Feb 10
SDF12:50 pmLouisville Intl
12h 40m
2 stops
SEA10:30 pmSeattle/Tacoma Intl
Feb 17
SEA5:15 amSeattle/Tacoma Intl
8h 55m
2 stops
SDF5:10 pmLouisville Intl
$381

American Airlines flights from Louisville to Seattle

Our best American Airlines deals on Louisville to Seattle flight tickets
American Airlines
Mar 11
SDF12:07 pmLouisville Intl
13h 57m
1 stop
SEA11:04 pmSeattle/Tacoma Intl
Mar 17
SEA7:21 amSeattle/Tacoma Intl
12h 59m
1 stop
SDF11:20 pmLouisville Intl
$309
American Airlines
Mar 11
SDF12:07 pmLouisville Intl
13h 57m
1 stop
SEA11:04 pmSeattle/Tacoma Intl
Mar 24
SEA12:07 amSeattle/Tacoma Intl
8h 25m
1 stop
SDF11:32 amLouisville Intl
$310
American Airlines
Feb 5
SDF1:32 pmLouisville Intl
11h 48m
1 stop
SEA10:20 pmSeattle/Tacoma Intl
Feb 9
SEA8:04 amSeattle/Tacoma Intl
12h 15m
1 stop
SDF11:19 pmLouisville Intl
$337

momondo Fare Finder

 
Customize your flight search to find flights from Louisville to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated January 15, 2026.
Use the filters below to find and compare flights from Louisville to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 3/11

12:07 pm-11:04 pm

1 stop13h 57m

Seattle/Tacoma Intl

Tue 3/17

7:21 am-11:20 pm

1 stop12h 59m

$309

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 3/11

12:07 pm-11:04 pm

1 stop13h 57m

Seattle/Tacoma Intl

Tue 3/24

12:07 am-11:32 am

1 stop8h 25m

$310

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Tue 2/10

3:32 pm-11:15 pm

1 stop10h 43m

Seattle/Tacoma Intl

Tue 2/17

8:30 am-9:18 pm

1 stop9h 48m

$321

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 3/11

8:55 am-3:45 pm

2 stops9h 50m

Seattle/Tacoma Intl

Wed 3/25

11:55 pm-9:55 am

1 stop7h 00m

$326

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Thu 2/5

1:32 pm-10:20 pm

1 stop11h 48m

Seattle/Tacoma Intl

Mon 2/9

8:04 am-11:19 pm

1 stop12h 15m

$337

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 4/1

12:07 pm-11:04 pm

1 stop13h 57m

Seattle/Tacoma Intl

Wed 4/8

7:00 am-9:28 pm

1 stop11h 28m

$339

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 3/11

2:17 pm-6:24 pm

1 stop7h 07m

Seattle/Tacoma Intl

Mon 3/23

11:15 pm-10:10 am

1 stop7h 55m

$340

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Tue 2/10

2:05 pm-9:15 pm

2 stops10h 10m

Seattle/Tacoma Intl

Tue 2/17

10:55 am-10:13 pm

1 stop8h 18m

$346

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Mon 2/16

6:12 pm-12:24 am

1 stop9h 12m

Seattle/Tacoma Intl

Mon 2/23

7:15 am-11:16 pm

1 stop13h 01m

$348

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Mon 3/9

5:55 pm-10:02 pm

1 stop7h 07m

Seattle/Tacoma Intl

Thu 3/26

11:59 pm-11:51 am

1 stop8h 52m

$359

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Louisville to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from Louisville to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $359. If you don’t want to visit Seattle in January, then you should wait until October to fly from Louisville, when ticket prices are also cheap, with an average price of $367.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $440 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Louisville for as low as $368 on momondo.

Can stopping save me money on Louisville to Seattle flights?

You could potentially save up to 6% on your flight if you consider stops on a Louisville to Seattle flight.

How have Louisville to Seattle flight prices changed over time?

As of January 2026, prices for Louisville to Seattle flights are approximately 12% cheaper when compared to flights at the same time last year.

When to book flights from Louisville to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Louisville to Seattle (SDF to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Seattle

Fastest flight time

6h 47m

Direct flights

None
The fastest flight from Louisville to Seattle takes 6h 47m
There are no direct flights from Louisville to Seattle. There are no popular flight routes from Louisville to Seattle.
Search flight deals

  • How far is Louisville Intl to Seattle/Tacoma Intl by plane?

    The distance between Louisville Intl and Seattle/Tacoma Intl is about 1938.2 mi. Flights usually cover this in 6h 47m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Louisville Intl Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Louisville Intl Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How many operators does momondo search for flights from Louisville Intl Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Louisville Intl Airport to Seattle/Tacoma Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Louisville to Seattle?

Best airlines flying from Louisville to Seattle

Compare and see reviews for airlines that fly from Louisville to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $206Free CancellationRating
7.9
8,051 reviews
Search Delta flights
United AirlinesPriceFrom $269Free CancellationRating
7.4
9,164 reviews
Search United Airlines flights
American AirlinesPriceFrom $291Free CancellationRating
7.2
11,136 reviews
Search American Airlines flights
SouthwestPriceFrom $350Free CancellationRating
8.0
4,258 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $430Free CancellationRating
8.0
11,721 reviews
Search Alaska Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Redmond
Tukwila
Cle Elum
Lakewood
Federal Way
Fife
Kirkland
Westport
Centralia
Shoreline

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Seattle?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Louisville to Seattle. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Louisville to Seattle with flexible booking policies on momondo?

All flight searches from Louisville to Seattle on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Louisville to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Louisville.

I’m not ready to book a flight from Louisville to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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