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Cheap flights from Louisville to Seattle from $182

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
12:38 pm - 8:07 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
10h 29m1 stop Charlotte Douglas
American Airlines Logo
5:30 am - 3:28 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 58m1 stop Dallas/Fort Worth
$337American Airlines
Thu, Sep 10 - Sat, Sep 12
American Airlines Logo
5:59 pm - 12:11 amSDF  Louisville Intl-SEA Seattle/Tacoma Intl
9h 12m1 stop Chicago O'Hare Intl
American Airlines Logo
11:57 pm - 9:43 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 46m1 stop Chicago O'Hare Intl
$350American Airlines
Sat, Sep 12 - Wed, Sep 16
Southwest Logo
7:35 pm - 11:30 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
6h 55m1 stop Chicago Midway
Southwest Logo
11:20 am - 8:30 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 10m1 stop Chicago Midway
$363Southwest
Wed, Dec 9 - Mon, Dec 14
Southwest Logo
6:45 pm - 11:40 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
7h 55m1 stop Chicago Midway
Southwest Logo
11:05 pm - 10:10 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
8h 05m1 stop Chicago Midway
$363Southwest
Wed, Sep 23 - Wed, Sep 30
United Airlines Logo
11:13 am - 6:19 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
10h 06m1 stop Newark
United Airlines Logo
11:14 pm - 10:18 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
8h 04m1 stop Washington, D.C. Dulles Intl
$363United Airlines
Sat, Oct 3 - Sat, Oct 3
United Airlines Logo
9:04 am - 4:05 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
10h 01m1 stop Chicago O'Hare Intl
United Airlines Logo
1:56 pm - 11:59 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 03m1 stop Chicago O'Hare Intl
$363United Airlines
Tue, Sep 29 - Wed, Sep 30
Delta Logo
5:59 pm - 11:52 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
8h 53m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 5:59 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
8h 59m1 stop Minneapolis St Paul
$363Delta
Sat, Oct 10 - Tue, Oct 13
Delta Logo
5:59 pm - 11:52 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
8h 53m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:50 pm - 11:57 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
9h 07m1 stop Minneapolis St Paul
$363Delta
Sat, Oct 10 - Mon, Oct 12
Alaska Airlines Logo
10:01 am - 8:34 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
13h 33m2 stops Chicago O'Hare Intl Portland
Alaska Airlines Logo
11:58 pm - 9:28 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 30m1 stop Chicago O'Hare Intl
$587Alaska Airlines
Wed, Nov 25 - Wed, Nov 25
Alaska Airlines Logo
10:08 am - 8:33 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
13h 25m2 stops Chicago O'Hare Intl Portland
Alaska Airlines Logo
11:41 pm - 12:10 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
9h 29m1 stop Chicago O'Hare Intl
$587Alaska Airlines
Sat, Oct 10 - Sat, Oct 10

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Delta flights from Louisville to Seattle

Our best Delta deals on Louisville to Seattle flight tickets
Delta
Sep 6
SDF11:17 amLouisville Intl
7h 43m
1 stop
SEA4:00 pmSeattle/Tacoma Intl
Sep 9
SEA6:00 amSeattle/Tacoma Intl
6h 49m
1 stop
SDF3:49 pmLouisville Intl
$337
Delta
Sep 6
SDF7:05 amLouisville Intl
7h 58m
1 stop
SEA12:03 pmSeattle/Tacoma Intl
Sep 18
SEA11:59 pmSeattle/Tacoma Intl
8h 55m
1 stop
SDF11:54 amLouisville Intl
$364
Delta
Sep 5
SDF10:34 amLouisville Intl
7h 00m
1 stop
SEA2:34 pmSeattle/Tacoma Intl
Sep 5
SEA11:10 pmSeattle/Tacoma Intl
7h 44m
1 stop
SDF9:54 amLouisville Intl
$378

Southwest flights from Louisville to Seattle

Our best Southwest deals on Louisville to Seattle flight tickets
Southwest
Oct 15
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
Southwest
Dec 9
SDF8:50 amLouisville Intl
10h 10m
2 stops
SEA4:00 pmSeattle/Tacoma Intl
Dec 14
SEA9:25 amSeattle/Tacoma Intl
8h 10m
2 stops
SDF8:35 pmLouisville Intl
$373
Southwest
Oct 16
SDF7:50 pmLouisville Intl
7h 45m
1 stop
SEA12:35 amSeattle/Tacoma Intl
Oct 19
SEA9:15 pmSeattle/Tacoma Intl
9h 50m
2 stops
SDF10:05 amLouisville Intl
$382

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

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Thu 9/10

12:38 pm-8:07 pm

1 stop10h 29m

Seattle/Tacoma Intl

Sat 9/12

5:30 am-3:28 pm

1 stop6h 58m

$337

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 9/12

5:59 pm-12:11 am

1 stop9h 12m

Seattle/Tacoma Intl

Wed 9/16

11:57 pm-9:43 am

1 stop6h 46m

$350
Quickest round-trip

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 12/9

7:35 pm-11:30 pm

1 stop6h 55m

Seattle/Tacoma Intl

Mon 12/14

11:20 am-8:30 pm

1 stop6h 10m

$363

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 9/23

6:45 pm-11:40 pm

1 stop7h 55m

Seattle/Tacoma Intl

Wed 9/30

11:05 pm-10:10 am

1 stop8h 05m

$363

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 10/3

11:13 am-6:19 pm

1 stop10h 06m

Seattle/Tacoma Intl

Sat 10/3

11:14 pm-10:18 am

1 stop8h 04m

$363

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Tue 9/29

9:04 am-4:05 pm

1 stop10h 01m

Seattle/Tacoma Intl

Wed 9/30

1:56 pm-11:59 pm

1 stop7h 03m

$363

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 10/10

5:59 pm-11:52 pm

1 stop8h 53m

Seattle/Tacoma Intl

Tue 10/13

6:00 am-5:59 pm

1 stop8h 59m

$363

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 10/10

5:59 pm-11:52 pm

1 stop8h 53m

Seattle/Tacoma Intl

Mon 10/12

11:50 pm-11:57 am

1 stop9h 07m

$363

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 11/25

10:01 am-8:34 pm

2 stops13h 33m

Seattle/Tacoma Intl

Wed 11/25

11:58 pm-9:28 am

1 stop6h 30m

$587

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 10/10

10:08 am-8:33 pm

2 stops13h 25m

Seattle/Tacoma Intl

Sat 10/10

11:41 pm-12:10 pm

1 stop9h 29m

$587

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 $408 to $542.
The lowest price recently found on this route was $337.

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 November to fly from Louisville, when ticket prices are also cheap, with an average price of $368.

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 $449 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 $389 on momondo.

How have Louisville to Seattle flight prices changed over time?

As of August 2026, prices for Louisville to Seattle flights are approximately 21% 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

Best Price Found

$182

Fastest flight time

6h 55m

Direct flights

None
The best one-way flight to Seattle from Louisville in the past 72 hours is $182. The best round-trip flight deal from Louisville to Seattle found on momondo in the last 72 hours is $337.
The fastest flight from Louisville to Seattle takes 6h 55m
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 6h 55m, 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
United AirlinesPriceFrom $276Free CancellationRating
7.4
10,135 reviews
Search United Airlines flights
DeltaPriceFrom $292Free CancellationRating
7.8
8,540 reviews
Search Delta flights
American AirlinesPriceFrom $303Free CancellationRating
7.1
12,025 reviews
Search American Airlines flights
SouthwestPriceFrom $385Free CancellationRating
8.0
4,201 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $430Free CancellationRating
7.9
12,859 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
Lynnwood
Lakewood
Federal Way
Puyallup
Tukwila
Fife
Cle Elum
Marysville
Kirkland
Shoreline
Centralia
Lacey

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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