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Cheap flights from Louisville to Seattle from $150

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.
American Airlines Logo
7:27 pm - 12:10 amSDF  Louisville Intl-SEA Seattle/Tacoma Intl
7h 43m1 stop Dallas/Fort Worth
American Airlines Logo
11:59 pm - 9:32 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 33m1 stop Chicago O'Hare Intl
$299American Airlines
Wed, Oct 14 - Wed, Oct 21
American Airlines Logo
11:49 am - 6:06 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
9h 17m1 stop Charlotte Douglas
American Airlines Logo
12:47 pm - 11:34 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 47m1 stop Dallas/Fort Worth
$299American Airlines
Sat, Oct 31 - Tue, Nov 3
Delta Logo
5:59 pm - 11:57 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
8h 58m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:15 pm - 10:09 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 54m1 stop Detroit Metropolitan Wayne County
$320Delta
Wed, Nov 11 - Mon, Nov 16
Southwest Logo
4:15 pm - 10:20 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
9h 05m1 stop Las Vegas Harry Reid Intl
Southwest Logo
12:15 am - 10:30 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 15m1 stop Chicago Midway
$321Southwest
Wed, Nov 11 - Sun, Nov 15
United Airlines Logo
8:00 am - 4:12 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
11h 12m2 stops Denver Intl Los Angeles
United Airlines Logo
5:05 am - 2:22 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 17m1 stop Denver Intl
$325United Airlines
Wed, Nov 11 - Mon, Nov 16
Southwest Logo
4:15 pm - 10:20 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
9h 05m1 stop Las Vegas Harry Reid Intl
Southwest Logo
12:15 am - 12:15 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
9h 00m2 stops Chicago Midway Nashville Intl
$327Southwest
Wed, Nov 11 - Sun, Nov 15
Delta Logo
7:00 am - 12:30 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
8h 30m1 stop Minneapolis St Paul
Delta Logo
1:40 pm - 11:59 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 19m1 stop Atlanta Hartsfield-Jackson
$363Delta
Tue, Oct 27 - Mon, Nov 2
United Airlines Logo
5:57 pm - 10:39 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
7h 42m1 stop Chicago O'Hare Intl
United Airlines Logo
7:00 am - 6:17 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
8h 17m1 stop Chicago O'Hare Intl
$399United Airlines
Tue, Feb 2 - Wed, Feb 3
Alaska Airlines Logo
10:08 am - 6:49 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
11h 41m2 stops Chicago O'Hare Intl Portland
Alaska Airlines Logo
11:41 pm - 9:32 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 51m1 stop Chicago O'Hare Intl
$624Alaska Airlines
Sat, Oct 17 - Thu, Oct 29
Alaska Airlines Logo
10:08 am - 6:49 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
11h 41m2 stops Chicago O'Hare Intl Portland
Alaska Airlines Logo
11:06 am - 9:25 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 19m1 stop Dallas/Fort Worth
$624Alaska Airlines
Sat, Oct 17 - Sat, Oct 24

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Southwest flights from Louisville to Seattle

Our best Southwest deals on Louisville to Seattle flight tickets
Southwest
Nov 11
SDF4:15 pmLouisville Intl
9h 05m
1 stop
SEA10:20 pmSeattle/Tacoma Intl
Nov 15
SEA12:15 amSeattle/Tacoma Intl
7h 15m
1 stop
SDF10:30 amLouisville Intl
$321
Southwest
Nov 11
SDF4:15 pmLouisville Intl
9h 05m
1 stop
SEA10:20 pmSeattle/Tacoma Intl
Nov 15
SEA12:15 amSeattle/Tacoma Intl
9h 00m
2 stops
SDF12:15 pmLouisville Intl
$327
Southwest
Oct 19
SDF7:50 pmLouisville Intl
7h 50m
1 stop
SEA12:40 amSeattle/Tacoma Intl
Oct 22
SEA8:40 pmSeattle/Tacoma Intl
10h 30m
2 stops
SDF10:10 amLouisville Intl
$368

United Airlines flights from Louisville to Seattle

Our best United Airlines deals on Louisville to Seattle flight tickets
United Airlines
Nov 11
SDF8:00 amLouisville Intl
11h 12m
2 stops
SEA4:12 pmSeattle/Tacoma Intl
Nov 16
SEA5:05 amSeattle/Tacoma Intl
6h 17m
1 stop
SDF2:22 pmLouisville Intl
$325
United Airlines
Oct 31
SDF10:27 amLouisville Intl
13h 29m
2 stops
SEA8:56 pmSeattle/Tacoma Intl
Nov 3
SEA6:30 amSeattle/Tacoma Intl
11h 04m
1 stop
SDF8:34 pmLouisville Intl
$404
United Airlines
Oct 31
SDF10:27 amLouisville Intl
13h 20m
2 stops
SEA8:47 pmSeattle/Tacoma Intl
Nov 3
SEA6:00 amSeattle/Tacoma Intl
13h 30m
2 stops
SDF10:30 pmLouisville Intl
$409

momondo Fare Finder

 
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
Quickest round-trip

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 10/14

7:27 pm-12:10 am

1 stop7h 43m

Seattle/Tacoma Intl

Wed 10/21

11:59 pm-9:32 am

1 stop6h 33m

$299

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 10/31

11:49 am-6:06 pm

1 stop9h 17m

Seattle/Tacoma Intl

Tue 11/3

12:47 pm-11:34 pm

1 stop7h 47m

$299

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 11/11

5:59 pm-11:57 pm

1 stop8h 58m

Seattle/Tacoma Intl

Mon 11/16

11:15 pm-10:09 am

1 stop7h 54m

$320

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 11/11

4:15 pm-10:20 pm

1 stop9h 05m

Seattle/Tacoma Intl

Sun 11/15

12:15 am-10:30 am

1 stop7h 15m

$321

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 11/11

8:00 am-4:12 pm

2 stops11h 12m

Seattle/Tacoma Intl

Mon 11/16

5:05 am-2:22 pm

1 stop6h 17m

$325

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 11/11

4:15 pm-10:20 pm

1 stop9h 05m

Seattle/Tacoma Intl

Sun 11/15

12:15 am-12:15 pm

2 stops9h 00m

$327

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Tue 10/27

7:00 am-12:30 pm

1 stop8h 30m

Seattle/Tacoma Intl

Mon 11/2

1:40 pm-11:59 pm

1 stop7h 19m

$363

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Tue 2/2

5:57 pm-10:39 pm

1 stop7h 42m

Seattle/Tacoma Intl

Wed 2/3

7:00 am-6:17 pm

1 stop8h 17m

$399

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 10/17

10:08 am-6:49 pm

2 stops11h 41m

Seattle/Tacoma Intl

Thu 10/29

11:41 pm-9:32 am

1 stop6h 51m

$624

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 10/17

10:08 am-6:49 pm

2 stops11h 41m

Seattle/Tacoma Intl

Sat 10/24

11:06 am-9:25 pm

1 stop7h 19m

$624

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?

Prices are currently low for flights on this route.

Typical prices usually range from $416 to $602.
The lowest price recently found on this route was $299.

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 $299. If you don’t want to visit Seattle in January, then you should wait until February to fly from Louisville, when ticket prices are also cheap, with an average price of $370.

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 $453 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 $396 on momondo.

How have Louisville to Seattle flight prices changed over time?

As of September 2026, prices for Louisville to Seattle flights are approximately 5% 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

Best Price Found

$150

Fastest flight time

7h 01m

Direct flights

None
The best one-way flight to Seattle from Louisville in the past 72 hours is $150. The best round-trip flight deal from Louisville to Seattle found on momondo in the last 72 hours is $299.
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

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 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 $292Free CancellationRating
7.8
8,567 reviews
Search Delta flights
United AirlinesPriceFrom $292Free CancellationRating
7.4
10,209 reviews
Search United Airlines flights
American AirlinesPriceFrom $303Free CancellationRating
7.1
12,055 reviews
Search American Airlines flights
SouthwestPriceFrom $372Free CancellationRating
8.0
4,188 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $430Free CancellationRating
7.9
12,931 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
Kent
Olympia
Redmond
Lakewood
Federal Way
Fife
Puyallup
Tukwila
Lynnwood
Cle Elum
Marysville
Lacey
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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