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Cheap flights from Louisville to Seattle from $167

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 5/4. 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

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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.
Multiple Airlines Logo
9:21 am - 5:37 pm
SDF
-
SEA
11h 16m
1 stop
Multiple Airlines Logo
7:50 pm - 8:36 am
SEA
-
SDF
33h 46m
2 stops
$300Multiple Airlines
Sat, May 9 - Mon, May 18
Multiple Airlines Logo
9:21 am - 6:35 pm
SDF
-
SEA
12h 14m
1 stop
Multiple Airlines Logo
7:50 pm - 8:36 am
SEA
-
SDF
33h 46m
2 stops
$317Multiple Airlines
Wed, May 6 - Mon, May 18
Multiple Airlines Logo
9:21 am - 5:37 pm
SDF
-
SEA
11h 16m
1 stop
Multiple Airlines Logo
11:06 am - 7:26 pm
SEA
-
SDF
29h 20m
1 stop
$318Multiple Airlines
Sat, May 9 - Tue, May 19
Multiple Airlines Logo
9:21 am - 6:35 pm
SDF
-
SEA
12h 14m
1 stop
Multiple Airlines Logo
11:06 am - 7:26 pm
SEA
-
SDF
29h 20m
1 stop
$336Multiple Airlines
Wed, May 6 - Tue, May 19
Multiple Airlines Logo
2:26 pm - 9:52 am
SDF
-
SEA
22h 26m
2 stops
Multiple Airlines Logo
11:06 am - 7:26 pm
SEA
-
SDF
29h 20m
1 stop
$345Multiple Airlines
Thu, Apr 30 - Tue, May 5
Multiple Airlines Logo
2:27 pm - 9:49 am
SDF
-
SEA
46h 22m
2 stops
Multiple Airlines Logo
11:06 am - 7:26 pm
SEA
-
SDF
29h 20m
1 stop
$346Multiple Airlines
Thu, May 7 - Tue, May 19
Multiple Airlines Logo
9:21 am - 5:37 pm
SDF
-
SEA
11h 16m
1 stop
Multiple Airlines Logo
7:50 pm - 7:26 pm
SEA
-
SDF
20h 36m
2 stops
$362Multiple Airlines
Sat, May 9 - Tue, May 19
American Airlines Logo
5:43 pm - 10:59 pm
SDF
-
SEA
8h 16m
1 stop
American Airlines Logo
11:24 pm - 10:36 am
SEA
-
SDF
8h 12m
1 stop
$375American Airlines
Wed, May 27 - Wed, Jun 3
Southwest Logo
4:40 pm - 12:10 am
SDF
-
SEA
10h 30m
2 stops
Southwest Logo
11:45 pm - 9:55 am
SEA
-
SDF
7h 10m
1 stop
$380Southwest
Wed, May 6 - Wed, May 13
Southwest Logo
8:55 am - 12:45 pm
SDF
-
SEA
6h 50m
1 stop
Southwest Logo
8:30 am - 5:45 pm
SEA
-
SDF
6h 15m
1 stop
$381Southwest
Tue, Apr 28 - Sat, May 2

American Airlines flights from Louisville to Seattle

Our best American Airlines deals on Louisville to Seattle flight tickets
American Airlines
May 27
SDF5:43 pmLouisville Intl
8h 16m
1 stop
SEA10:59 pmSeattle/Tacoma Intl
Jun 3
SEA11:24 pmSeattle/Tacoma Intl
8h 12m
1 stop
SDF10:36 amLouisville Intl
$375
American Airlines
Apr 30
SDF12:00 pmLouisville Intl
10h 36m
1 stop
SEA7:36 pmSeattle/Tacoma Intl
May 7
SEA11:33 pmSeattle/Tacoma Intl
8h 13m
1 stop
SDF10:46 amLouisville Intl
$399
American Airlines
May 26
SDF7:45 pmLouisville Intl
8h 14m
1 stop
SEA12:59 amSeattle/Tacoma Intl
Jun 1
SEA7:31 amSeattle/Tacoma Intl
8h 29m
1 stop
SDF7:00 pmLouisville Intl
$407

Delta flights from Louisville to Seattle

Our best Delta deals on Louisville to Seattle flight tickets
Delta
May 26
SDF7:49 pmLouisville Intl
6h 55m
1 stop
SEA11:44 pmSeattle/Tacoma Intl
Jun 1
SEA11:05 pmSeattle/Tacoma Intl
7h 54m
1 stop
SDF9:59 amLouisville Intl
$387
Delta
May 9
SDF4:28 pmLouisville Intl
7h 15m
1 stop
SEA8:43 pmSeattle/Tacoma Intl
May 20
SEA5:30 amSeattle/Tacoma Intl
8h 42m
1 stop
SDF5:12 pmLouisville Intl
$417
Delta
May 10
SDF5:52 pmLouisville Intl
7h 56m
1 stop
SEA10:48 pmSeattle/Tacoma Intl
May 19
SEA9:10 amSeattle/Tacoma Intl
6h 58m
1 stop
SDF7:08 pmLouisville Intl
$426

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 April 10, 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

Sat 5/9

9:21 am-5:37 pm

1 stop11h 16m

Seattle/Tacoma Intl

Mon 5/18

7:50 pm-8:36 am

2 stops33h 46m

$300

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 5/6

9:21 am-6:35 pm

1 stop12h 14m

Seattle/Tacoma Intl

Mon 5/18

7:50 pm-8:36 am

2 stops33h 46m

$317

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Sat 5/9

9:21 am-5:37 pm

1 stop11h 16m

Seattle/Tacoma Intl

Tue 5/19

11:06 am-7:26 pm

1 stop29h 20m

$318

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 5/6

9:21 am-6:35 pm

1 stop12h 14m

Seattle/Tacoma Intl

Tue 5/19

11:06 am-7:26 pm

1 stop29h 20m

$336

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Thu 4/30

2:26 pm-9:52 am

2 stops22h 26m

Seattle/Tacoma Intl

Tue 5/5

11:06 am-7:26 pm

1 stop29h 20m

$345

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Thu 5/7

2:27 pm-9:49 am

2 stops46h 22m

Seattle/Tacoma Intl

Tue 5/19

11:06 am-7:26 pm

1 stop29h 20m

$346

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Sat 5/9

9:21 am-5:37 pm

1 stop11h 16m

Seattle/Tacoma Intl

Tue 5/19

7:50 pm-7:26 pm

2 stops20h 36m

$362

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 5/27

5:43 pm-10:59 pm

1 stop8h 16m

Seattle/Tacoma Intl

Wed 6/3

11:24 pm-10:36 am

1 stop8h 12m

$375

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Wed 5/6

4:40 pm-12:10 am

2 stops10h 30m

Seattle/Tacoma Intl

Wed 5/13

11:45 pm-9:55 am

1 stop7h 10m

$380
Quickest round-trip

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Tue 4/28

8:55 am-12:45 pm

1 stop6h 50m

Seattle/Tacoma Intl

Sat 5/2

8:30 am-5:45 pm

1 stop6h 15m

$381

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 $363.

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 $427 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 $330 on momondo.

Can stopping save me money on Louisville to Seattle flights?

You could potentially save up to 15% 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 April 2026, prices for Louisville to Seattle flights are approximately 21% 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 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 $206Free CancellationRating
7.9
8,398 reviews
Search Delta flights
United AirlinesPriceFrom $257Free CancellationRating
7.4
9,562 reviews
Search United Airlines flights
American AirlinesPriceFrom $270Free CancellationRating
7.1
11,564 reviews
Search American Airlines flights
SouthwestPriceFrom $336Free CancellationRating
8.0
4,334 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $430Free CancellationRating
7.9
12,207 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
Marysville
Puyallup
Lakewood
Cle Elum
Tukwila
Federal Way
Centralia
Fife
Westport
Tumwater
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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