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Cheap flights from Louisville to Seattle from $118

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 2/23. 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
8:07 am - 10:20 pm
SDF
-
SEA
17h 13m1 stop
American Airlines Logo
8:04 am - 11:19 pm
SEA
-
SDF
12h 15m1 stop
$225American Airlines
Mon, Feb 2 - Mon, Feb 9
American Airlines Logo
8:07 am - 2:10 pm
SDF
-
SEA
9h 03m1 stop
American Airlines Logo
7:15 am - 9:26 pm
SEA
-
SDF
11h 11m1 stop
$248American Airlines
Wed, Feb 11 - Wed, Feb 18
American Airlines Logo
1:32 pm - 10:20 pm
SDF
-
SEA
11h 48m1 stop
American Airlines Logo
7:15 am - 11:16 pm
SEA
-
SDF
13h 01m1 stop
$265American Airlines
Mon, Feb 9 - Wed, Feb 18
Delta Logo
6:23 am - 12:23 pm
SDF
-
SEA
9h 00m1 stop
Delta Logo
12:00 pm - 11:06 pm
SEA
-
SDF
8h 06m1 stop
$271Delta
Wed, Jan 28 - Tue, Feb 3
Southwest Logo
5:10 pm - 11:05 pm
SDF
-
SEA
8h 55m1 stop
Southwest Logo
9:55 am - 9:10 pm
SEA
-
SDF
8h 15m1 stop
$272Southwest
Wed, Feb 4 - Wed, Feb 11
United Airlines Logo
9:00 am - 6:27 pm
SDF
-
SEA
12h 27m2 stops
United Airlines Logo
5:00 am - 2:19 pm
SEA
-
SDF
6h 19m1 stop
$276United Airlines
Wed, Feb 11 - Wed, Feb 18
Southwest Logo
12:50 pm - 10:30 pm
SDF
-
SEA
12h 40m2 stops
Southwest Logo
9:55 am - 9:10 pm
SEA
-
SDF
8h 15m1 stop
$277Southwest
Wed, Feb 4 - Wed, Feb 11
American Airlines Logo
1:32 pm - 10:20 pm
SDF
-
SEA
11h 48m1 stop
American Airlines Logo
12:07 am - 11:30 am
SEA
-
SDF
8h 23m1 stop
$280American Airlines
Thu, Feb 5 - Wed, Feb 11
Southwest Logo
12:50 pm - 10:30 pm
SDF
-
SEA
12h 40m2 stops
Southwest Logo
6:25 am - 11:20 pm
SEA
-
SDF
13h 55m2 stops
$288Southwest
Wed, Feb 4 - Wed, Feb 11
Delta Logo
5:47 pm - 8:53 am
SDF
-
SEA
18h 06m2 stops
Delta Logo
6:10 am - 3:48 pm
SEA
-
SDF
6h 38m1 stop
$298Delta
Tue, Feb 10 - Wed, Feb 18

Southwest flights from Louisville to Seattle

Our best Southwest deals on Louisville to Seattle flight tickets
Southwest
Feb 4
SDF5:10 pmLouisville Intl
8h 55m
1 stop
SEA11:05 pmSeattle/Tacoma Intl
Feb 11
SEA9:55 amSeattle/Tacoma Intl
8h 15m
1 stop
SDF9:10 pmLouisville Intl
$272
Southwest
Feb 4
SDF12:50 pmLouisville Intl
12h 40m
2 stops
SEA10:30 pmSeattle/Tacoma Intl
Feb 11
SEA9:55 amSeattle/Tacoma Intl
8h 15m
1 stop
SDF9:10 pmLouisville Intl
$277
Southwest
Feb 4
SDF12:50 pmLouisville Intl
12h 40m
2 stops
SEA10:30 pmSeattle/Tacoma Intl
Feb 11
SEA6:25 amSeattle/Tacoma Intl
13h 55m
2 stops
SDF11:20 pmLouisville Intl
$288

American Airlines flights from Louisville to Seattle

Our best American Airlines deals on Louisville to Seattle flight tickets
American Airlines
Feb 2
SDF8:07 amLouisville Intl
17h 13m
1 stop
SEA10:20 pmSeattle/Tacoma Intl
Feb 9
SEA8:04 amSeattle/Tacoma Intl
12h 15m
1 stop
SDF11:19 pmLouisville Intl
$225
American Airlines
Feb 11
SDF8:07 amLouisville Intl
9h 03m
1 stop
SEA2:10 pmSeattle/Tacoma Intl
Feb 18
SEA7:15 amSeattle/Tacoma Intl
11h 11m
1 stop
SDF9:26 pmLouisville Intl
$248
American Airlines
Feb 9
SDF1:32 pmLouisville Intl
11h 48m
1 stop
SEA10:20 pmSeattle/Tacoma Intl
Feb 18
SEA7:15 amSeattle/Tacoma Intl
13h 01m
1 stop
SDF11:16 pmLouisville Intl
$265

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 8, 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

Mon 2/2

8:07 am-10:20 pm

1 stop17h 13m

Seattle/Tacoma Intl

Mon 2/9

8:04 am-11:19 pm

1 stop12h 15m

$225

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 2/11

8:07 am-2:10 pm

1 stop9h 03m

Seattle/Tacoma Intl

Wed 2/18

7:15 am-9:26 pm

1 stop11h 11m

$248

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Mon 2/9

1:32 pm-10:20 pm

1 stop11h 48m

Seattle/Tacoma Intl

Wed 2/18

7:15 am-11:16 pm

1 stop13h 01m

$265

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 1/28

6:23 am-12:23 pm

1 stop9h 00m

Seattle/Tacoma Intl

Tue 2/3

12:00 pm-11:06 pm

1 stop8h 06m

$271

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 2/4

5:10 pm-11:05 pm

1 stop8h 55m

Seattle/Tacoma Intl

Wed 2/11

9:55 am-9:10 pm

1 stop8h 15m

$272

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 2/11

9:00 am-6:27 pm

2 stops12h 27m

Seattle/Tacoma Intl

Wed 2/18

5:00 am-2:19 pm

1 stop6h 19m

$276

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 2/4

12:50 pm-10:30 pm

2 stops12h 40m

Seattle/Tacoma Intl

Wed 2/11

9:55 am-9:10 pm

1 stop8h 15m

$277

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Thu 2/5

1:32 pm-10:20 pm

1 stop11h 48m

Seattle/Tacoma Intl

Wed 2/11

12:07 am-11:30 am

1 stop8h 23m

$280

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 2/4

12:50 pm-10:30 pm

2 stops12h 40m

Seattle/Tacoma Intl

Wed 2/11

6:25 am-11:20 pm

2 stops13h 55m

$288

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Tue 2/10

5:47 pm-8:53 am

2 stops18h 06m

Seattle/Tacoma Intl

Wed 2/18

6:10 am-3:48 pm

1 stop6h 38m

$298

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 $444 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.

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

7h 01m

Direct flights

None
The fastest flight from Louisville to Seattle takes 7h 01m
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 7h 01m, 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 $209Free CancellationRating
7.9
8,025 reviews
Search Delta flights
United AirlinesPriceFrom $269Free CancellationRating
7.4
9,139 reviews
Search United Airlines flights
American AirlinesPriceFrom $292Free CancellationRating
7.2
11,095 reviews
Search American Airlines flights
SouthwestPriceFrom $350Free CancellationRating
8.0
4,250 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $430Free CancellationRating
8.0
11,661 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
Federal Way
Cle Elum
Lakewood
Fife
Westport
Kirkland
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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