Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Louisville to Seattle from $169

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
6:39 pm - 11:59 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
8h 20m1 stop Minneapolis St Paul
Delta Logo
11:10 pm - 9:59 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 49m1 stop Detroit Metropolitan Wayne County
$337Delta
Thu, Oct 8 - Tue, Oct 13
Delta Logo
5:57 pm - 11:52 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
8h 55m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:10 pm - 9:59 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 49m1 stop Detroit Metropolitan Wayne County
$337Delta
Wed, Oct 7 - Mon, Oct 12
American Airlines Logo
2:47 pm - 9:36 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
9h 49m1 stop Chicago O'Hare Intl
American Airlines Logo
6:12 am - 4:23 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 11m1 stop Chicago O'Hare Intl
$337American Airlines
Sat, Oct 3 - Sat, Oct 10
American Airlines Logo
8:02 am - 2:52 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
9h 50m1 stop Dallas/Fort Worth
American Airlines Logo
12:25 am - 10:24 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 59m1 stop Dallas/Fort Worth
$337American Airlines
Sat, Oct 17 - Fri, Oct 23
Southwest Logo
7:10 pm - 11:55 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
7h 45m1 stop Chicago Midway
Southwest Logo
11:05 pm - 10:25 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
8h 20m1 stop Chicago Midway
$337Southwest
Thu, Sep 17 - Thu, Sep 24
Southwest Logo
5:35 pm - 10:20 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
7h 45m1 stop Las Vegas Harry Reid Intl
Southwest Logo
12:10 am - 12:20 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
9h 10m2 stops Chicago Midway Baltimore/Washington
$342Southwest
Sat, Oct 17 - Fri, Oct 23
United Airlines Logo
8:00 am - 2:17 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
9h 17m2 stops Denver Intl San Francisco
United Airlines Logo
5:00 am - 2:40 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 40m1 stop Denver Intl
$342United Airlines
Tue, Oct 20 - Sat, Oct 24
United Airlines Logo
8:00 am - 2:39 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
9h 39m2 stops Denver Intl San Francisco
United Airlines Logo
7:00 am - 5:02 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 02m1 stop Chicago O'Hare Intl
$368United Airlines
Wed, Nov 18 - Mon, Nov 23
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
8:39 am - 9:25 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
9h 46m1 stop Dallas/Fort Worth
$624Alaska Airlines
Tue, Oct 6 - Wed, Oct 14
Alaska Airlines Logo
10:16 am - 8:33 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
13h 17m2 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
Wed, Oct 7 - Wed, Oct 14

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Southwest flights from Louisville to Seattle

Our best Southwest deals on Louisville to Seattle flight tickets
Southwest
Sep 17
SDF7:10 pmLouisville Intl
7h 45m
1 stop
SEA11:55 pmSeattle/Tacoma Intl
Sep 24
SEA11:05 pmSeattle/Tacoma Intl
11h 00m
2 stops
SDF1:05 pmLouisville Intl
$342
Southwest
Oct 5
SDF6:15 pmLouisville Intl
9h 20m
2 stops
SEA12:35 amSeattle/Tacoma Intl
Oct 9
SEA12:10 amSeattle/Tacoma Intl
7h 10m
1 stop
SDF10:20 amLouisville Intl
$352
Southwest
Oct 20
SDF3:00 pmLouisville Intl
10h 40m
2 stops
SEA10:40 pmSeattle/Tacoma Intl
Oct 23
SEA12:10 amSeattle/Tacoma Intl
9h 10m
2 stops
SDF12:20 pmLouisville Intl
$357

American Airlines flights from Louisville to Seattle

Our best American Airlines deals on Louisville to Seattle flight tickets
American Airlines
Sep 11
SDF5:59 pmLouisville Intl
9h 12m
1 stop
SEA12:11 amSeattle/Tacoma Intl
Sep 14
SEA11:57 pmSeattle/Tacoma Intl
6h 46m
1 stop
SDF9:43 amLouisville Intl
$366
American Airlines
Oct 2
SDF5:59 pmLouisville Intl
9h 12m
1 stop
SEA12:11 amSeattle/Tacoma Intl
Oct 10
SEA6:12 amSeattle/Tacoma Intl
7h 11m
1 stop
SDF4:23 pmLouisville Intl
$377
American Airlines
Sep 14
SDF4:19 pmLouisville Intl
8h 33m
1 stop
SEA9:52 pmSeattle/Tacoma Intl
Sep 21
SEA11:57 pmSeattle/Tacoma Intl
6h 46m
1 stop
SDF9:43 amLouisville Intl
$390

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 10/8

6:39 pm-11:59 pm

1 stop8h 20m

Seattle/Tacoma Intl

Tue 10/13

11:10 pm-9:59 am

1 stop7h 49m

$337

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 10/7

5:57 pm-11:52 pm

1 stop8h 55m

Seattle/Tacoma Intl

Mon 10/12

11:10 pm-9:59 am

1 stop7h 49m

$337

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 10/3

2:47 pm-9:36 pm

1 stop9h 49m

Seattle/Tacoma Intl

Sat 10/10

6:12 am-4:23 pm

1 stop7h 11m

$337

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 10/17

8:02 am-2:52 pm

1 stop9h 50m

Seattle/Tacoma Intl

Fri 10/23

12:25 am-10:24 am

1 stop6h 59m

$337

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Thu 9/17

7:10 pm-11:55 pm

1 stop7h 45m

Seattle/Tacoma Intl

Thu 9/24

11:05 pm-10:25 am

1 stop8h 20m

$337

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 10/17

5:35 pm-10:20 pm

1 stop7h 45m

Seattle/Tacoma Intl

Fri 10/23

12:10 am-12:20 pm

2 stops9h 10m

$342
Quickest round-trip

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Tue 10/20

8:00 am-2:17 pm

2 stops9h 17m

Seattle/Tacoma Intl

Sat 10/24

5:00 am-2:40 pm

1 stop6h 40m

$342

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 11/18

8:00 am-2:39 pm

2 stops9h 39m

Seattle/Tacoma Intl

Mon 11/23

7:00 am-5:02 pm

1 stop7h 02m

$368

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Tue 10/6

10:08 am-6:49 pm

2 stops11h 41m

Seattle/Tacoma Intl

Wed 10/14

8:39 am-9:25 pm

1 stop9h 46m

$624

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 10/7

10:16 am-8:33 pm

2 stops13h 17m

Seattle/Tacoma Intl

Wed 10/14

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
1
2

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 $432 to $543.
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

$169

Fastest flight time

6h 55m

Direct flights

None
The best one-way flight to Seattle from Louisville in the past 72 hours is $169. 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
10,121 reviews
Search United Airlines flights
DeltaPriceFrom $292Free CancellationRating
7.8
8,529 reviews
Search Delta flights
American AirlinesPriceFrom $303Free CancellationRating
7.1
11,992 reviews
Search American Airlines flights
SouthwestPriceFrom $385Free CancellationRating
8.0
4,205 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $430Free CancellationRating
7.9
12,838 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.

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 9/24
Thu 10/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States