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Cheap flights from Louisville to Seattle from $147

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 8/26. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
4:30 pm - 10:00 pm
SDF
-
SEA
8h 30m
1 stop
Delta Logo
6:00 am - 5:00 pm
SEA
-
SDF
8h 00m
1 stop
$293Delta
Tue, Aug 25 - Tue, Sep 1
Delta Logo
6:49 am - 11:04 am
SDF
-
SEA
7h 15m
1 stop
Delta Logo
5:30 am - 4:46 pm
SEA
-
SDF
8h 16m
1 stop
$311Delta
Wed, Jul 1 - Sat, Jul 4
American Airlines Logo
6:30 pm - 11:59 pm
SDF
-
SEA
8h 29m
1 stop
American Airlines Logo
5:10 am - 5:59 pm
SEA
-
SDF
9h 49m
1 stop
$316American Airlines
Tue, Sep 1 - Tue, Sep 8
Delta Logo
7:54 pm - 11:54 pm
SDF
-
SEA
7h 00m
1 stop
Delta Logo
6:00 am - 5:00 pm
SEA
-
SDF
8h 00m
1 stop
$324Delta
Mon, Aug 10 - Wed, Aug 19
Delta Logo
7:54 pm - 11:54 pm
SDF
-
SEA
7h 00m
1 stop
Delta Logo
9:10 am - 7:42 pm
SEA
-
SDF
7h 32m
1 stop
$333Delta
Thu, Aug 27 - Sat, Sep 5
American Airlines Logo
8:16 am - 4:20 pm
SDF
-
SEA
11h 04m
1 stop
American Airlines Logo
11:56 pm - 9:43 am
SEA
-
SDF
6h 47m
1 stop
$334American Airlines
Tue, Sep 1 - Tue, Sep 8
Delta Logo
7:54 pm - 11:54 pm
SDF
-
SEA
7h 00m
1 stop
Delta Logo
9:10 am - 7:42 pm
SEA
-
SDF
7h 32m
1 stop
$346Delta
Thu, Aug 27 - Sat, Sep 5
Delta Logo
1:17 pm - 8:23 pm
SDF
-
SEA
10h 06m
1 stop
Delta Logo
11:59 pm - 11:55 am
SEA
-
SDF
8h 56m
1 stop
$354Delta
Tue, Aug 11 - Fri, Aug 14
Southwest Logo
11:50 am - 5:30 pm
SDF
-
SEA
8h 40m
1 stop
Southwest Logo
7:10 am - 5:55 pm
SEA
-
SDF
7h 45m
1 stop
$355Southwest
Tue, Aug 25 - Tue, Sep 1
American Airlines Logo
8:16 am - 4:20 pm
SDF
-
SEA
11h 04m
1 stop
American Airlines Logo
12:15 pm - 11:11 pm
SEA
-
SDF
7h 56m
1 stop
$359American Airlines
Wed, Aug 12 - Wed, Aug 19

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Delta flights from Louisville to Seattle

Our best Delta deals on Louisville to Seattle flight tickets
Delta
Aug 25
SDF4:30 pmLouisville Intl
8h 30m
1 stop
SEA10:00 pmSeattle/Tacoma Intl
Sep 1
SEA6:00 amSeattle/Tacoma Intl
8h 00m
1 stop
SDF5:00 pmLouisville Intl
$293
Delta
Jul 1
SDF6:49 amLouisville Intl
7h 15m
1 stop
SEA11:04 amSeattle/Tacoma Intl
Jul 4
SEA5:30 amSeattle/Tacoma Intl
8h 16m
1 stop
SDF4:46 pmLouisville Intl
$311
Delta
Aug 10
SDF7:54 pmLouisville Intl
7h 00m
1 stop
SEA11:54 pmSeattle/Tacoma Intl
Aug 19
SEA6:00 amSeattle/Tacoma Intl
8h 00m
1 stop
SDF5:00 pmLouisville Intl
$324

American Airlines flights from Louisville to Seattle

Our best American Airlines deals on Louisville to Seattle flight tickets
American Airlines
Sep 1
SDF6:30 pmLouisville Intl
8h 29m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
Sep 8
SEA5:10 amSeattle/Tacoma Intl
9h 49m
1 stop
SDF5:59 pmLouisville Intl
$316
American Airlines
Sep 1
SDF8:16 amLouisville Intl
11h 04m
1 stop
SEA4:20 pmSeattle/Tacoma Intl
Sep 8
SEA11:56 pmSeattle/Tacoma Intl
6h 47m
1 stop
SDF9:43 amLouisville Intl
$334
American Airlines
Aug 12
SDF8:16 amLouisville Intl
11h 04m
1 stop
SEA4:20 pmSeattle/Tacoma Intl
Aug 19
SEA12:15 pmSeattle/Tacoma Intl
7h 56m
1 stop
SDF11:11 pmLouisville Intl
$359

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 June 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

Cheapest round-trip

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Tue 8/25

4:30 pm-10:00 pm

1 stop8h 30m

Seattle/Tacoma Intl

Tue 9/1

6:00 am-5:00 pm

1 stop8h 00m

$293

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 7/1

6:49 am-11:04 am

1 stop7h 15m

Seattle/Tacoma Intl

Sat 7/4

5:30 am-4:46 pm

1 stop8h 16m

$311

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Tue 9/1

6:30 pm-11:59 pm

1 stop8h 29m

Seattle/Tacoma Intl

Tue 9/8

5:10 am-5:59 pm

1 stop9h 49m

$316

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Mon 8/10

7:54 pm-11:54 pm

1 stop7h 00m

Seattle/Tacoma Intl

Wed 8/19

6:00 am-5:00 pm

1 stop8h 00m

$324
Quickest round-trip

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Thu 8/27

7:54 pm-11:54 pm

1 stop7h 00m

Seattle/Tacoma Intl

Sat 9/5

9:10 am-7:42 pm

1 stop7h 32m

$333

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Tue 9/1

8:16 am-4:20 pm

1 stop11h 04m

Seattle/Tacoma Intl

Tue 9/8

11:56 pm-9:43 am

1 stop6h 47m

$334

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Thu 8/27

7:54 pm-11:54 pm

1 stop7h 00m

Seattle/Tacoma Intl

Sat 9/5

9:10 am-7:42 pm

1 stop7h 32m

$346

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Tue 8/11

1:17 pm-8:23 pm

1 stop10h 06m

Seattle/Tacoma Intl

Fri 8/14

11:59 pm-11:55 am

1 stop8h 56m

$354

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Tue 8/25

11:50 am-5:30 pm

1 stop8h 40m

Seattle/Tacoma Intl

Tue 9/1

7:10 am-5:55 pm

1 stop7h 45m

$355

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 8/12

8:16 am-4:20 pm

1 stop11h 04m

Seattle/Tacoma Intl

Wed 8/19

12:15 pm-11:11 pm

1 stop7h 56m

$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 typical price of a round-trip flight between Louisville and Seattle?

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 $268. 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 $373.

How far in advance should I book a flight from Louisville 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 $442 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 $360 on momondo.

How have Louisville to Seattle flight prices changed over time?

As of June 2026, prices for Louisville to Seattle flights are approximately 33% more expensive 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 00m

Direct flights

None
The fastest flight from Louisville to Seattle takes 7h 00m
There are no direct flights from Louisville to Seattle. There are no popular flight routes from Louisville to Seattle.
Search flight deals

Frequently asked questions about flying from Louisville to Seattle

  • 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 00m, 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 $250Free CancellationRating
7.9
8,396 reviews
Search Delta flights
American AirlinesPriceFrom $280Free CancellationRating
7.1
11,660 reviews
Search American Airlines flights
United AirlinesPriceFrom $292Free CancellationRating
7.4
9,830 reviews
Search United Airlines flights
SouthwestPriceFrom $350Free CancellationRating
7.9
4,235 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $358Free CancellationRating
7.9
12,509 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
Redmond
Kent
Lakewood
Puyallup
Tukwila
Marysville
Cle Elum
Federal Way
Fife
Centralia
Shoreline
Westport
Kirkland

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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