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Cheap flights from Louisville to Seattle from $174

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
10:01 am - 2:25 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
7h 24m1 stop Chicago O'Hare Intl
American Airlines Logo
11:36 pm - 9:28 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 52m1 stop Chicago O'Hare Intl
$311American Airlines
Thu, Nov 19 - Mon, Nov 23
American Airlines Logo
6:11 pm - 11:19 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
8h 08m1 stop Charlotte Douglas
American Airlines Logo
2:07 pm - 11:55 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 48m1 stop Dallas/Fort Worth
$311American Airlines
Thu, Nov 19 - Thu, Dec 3
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
$336United Airlines
Thu, Nov 19 - Mon, Nov 23
United Airlines Logo
2:25 pm - 9:01 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
9h 36m1 stop Washington, D.C. Dulles Intl
United Airlines Logo
2:05 pm - 11:49 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 44m1 stop Chicago O'Hare Intl
$363United Airlines
Mon, Dec 14 - Wed, Dec 16
Southwest Logo
7:10 am - 4:05 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
11h 55m2 stops Nashville Intl Denver Intl
Southwest Logo
6:30 am - 3:35 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 05m1 stop Chicago Midway
$368Southwest
Sat, Dec 12 - Mon, Dec 14
Southwest Logo
7:10 am - 4:05 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
11h 55m2 stops Nashville Intl Denver Intl
Southwest Logo
12:15 am - 12:15 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
9h 00m2 stops Chicago Midway Nashville Intl
$373Southwest
Sat, Dec 12 - Sun, Dec 13
Delta Logo
5:59 pm - 11:25 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
8h 26m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:05 pm - 9:55 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 50m1 stop Detroit Metropolitan Wayne County
$377Delta
Wed, Feb 10 - Tue, Feb 16
Delta Logo
6:35 am - 12:31 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
8h 56m1 stop Minneapolis St Paul
Delta Logo
11:14 pm - 10:47 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
8h 33m1 stop Detroit Metropolitan Wayne County
$395Delta
Sat, Dec 12 - Sun, Dec 20
Alaska Airlines Logo
10:13 am - 8:33 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
13h 20m2 stops Chicago O'Hare Intl Portland
Alaska Airlines Logo
8:45 am - 11:55 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
12h 10m2 stops Portland Dallas/Fort Worth
$665Alaska Airlines
Wed, Dec 9 - Sat, Dec 12
Alaska Airlines Logo
10:17 am - 6:40 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
11h 23m2 stops Chicago O'Hare Intl Portland
Alaska Airlines Logo
8:47 am - 11:12 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
11h 25m2 stops Portland Dallas/Fort Worth
$665Alaska Airlines
Tue, Feb 2 - Wed, Feb 3

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United Airlines flights from Louisville to Seattle

Our best United Airlines deals on Louisville to Seattle flight tickets
United Airlines
Nov 19
SDF8:00 amLouisville Intl
11h 12m
2 stops
SEA4:12 pmSeattle/Tacoma Intl
Nov 23
SEA5:05 amSeattle/Tacoma Intl
6h 17m
1 stop
SDF2:22 pmLouisville Intl
$336
United Airlines
Dec 14
SDF9:00 amLouisville Intl
10h 22m
2 stops
SEA4:22 pmSeattle/Tacoma Intl
Dec 16
SEA5:05 amSeattle/Tacoma Intl
6h 12m
1 stop
SDF2:17 pmLouisville Intl
$368
United Airlines
Dec 19
SDF6:00 pmLouisville Intl
7h 32m
1 stop
SEA10:32 pmSeattle/Tacoma Intl
Dec 31
SEA10:55 amSeattle/Tacoma Intl
7h 01m
1 stop
SDF8:56 pmLouisville Intl
$377

Southwest flights from Louisville to Seattle

Our best Southwest deals on Louisville to Seattle flight tickets
Southwest
Dec 12
SDF7:10 amLouisville Intl
11h 55m
2 stops
SEA4:05 pmSeattle/Tacoma Intl
Dec 13
SEA12:15 amSeattle/Tacoma Intl
9h 00m
2 stops
SDF12:15 pmLouisville Intl
$373
Southwest
Dec 14
SDF6:50 amLouisville Intl
7h 10m
1 stop
SEA11:00 amSeattle/Tacoma Intl
Dec 17
SEA6:45 amSeattle/Tacoma Intl
9h 30m
1 stop
SDF7:15 pmLouisville Intl
$374
Southwest
Dec 19
SDF8:30 pmLouisville Intl
8h 05m
1 stop
SEA1:35 amSeattle/Tacoma Intl
Dec 30
SEA12:15 amSeattle/Tacoma Intl
9h 00m
2 stops
SDF12:15 pmLouisville 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
Quickest round-trip

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Thu 11/19

10:01 am-2:25 pm

1 stop7h 24m

Seattle/Tacoma Intl

Mon 11/23

11:36 pm-9:28 am

1 stop6h 52m

$311

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Thu 11/19

6:11 pm-11:19 pm

1 stop8h 08m

Seattle/Tacoma Intl

Thu 12/3

2:07 pm-11:55 pm

1 stop6h 48m

$311

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Thu 11/19

8:00 am-4:12 pm

2 stops11h 12m

Seattle/Tacoma Intl

Mon 11/23

5:05 am-2:22 pm

1 stop6h 17m

$336

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Mon 12/14

2:25 pm-9:01 pm

1 stop9h 36m

Seattle/Tacoma Intl

Wed 12/16

2:05 pm-11:49 pm

1 stop6h 44m

$363

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 12/12

7:10 am-4:05 pm

2 stops11h 55m

Seattle/Tacoma Intl

Mon 12/14

6:30 am-3:35 pm

1 stop6h 05m

$368

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 12/12

7:10 am-4:05 pm

2 stops11h 55m

Seattle/Tacoma Intl

Sun 12/13

12:15 am-12:15 pm

2 stops9h 00m

$373

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 2/10

5:59 pm-11:25 pm

1 stop8h 26m

Seattle/Tacoma Intl

Tue 2/16

11:05 pm-9:55 am

1 stop7h 50m

$377

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 12/12

6:35 am-12:31 pm

1 stop8h 56m

Seattle/Tacoma Intl

Sun 12/20

11:14 pm-10:47 am

1 stop8h 33m

$395

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Wed 12/9

10:13 am-8:33 pm

2 stops13h 20m

Seattle/Tacoma Intl

Sat 12/12

8:45 am-11:55 pm

2 stops12h 10m

$665

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Tue 2/2

10:17 am-6:40 pm

2 stops11h 23m

Seattle/Tacoma Intl

Wed 2/3

8:47 am-11:12 pm

2 stops11h 25m

$665

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 $343 to $515.
The lowest price recently found on this route was $311.

What is the cheapest month to fly to Seattle?

In general, February 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 $385. If you don’t want to visit Seattle in February, then you should wait until November to fly from Louisville, when ticket prices are also cheap, with an average price of $411.

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 $468 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 $370 on momondo.

How have Louisville to Seattle flight prices changed over time?

As of November 2026, prices for Louisville to Seattle flights are approximately 29% 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

$174

Fastest flight time

7h 00m

Direct flights

None
The best one-way flight to Seattle from Louisville in the past 72 hours is $174. The best round-trip flight deal from Louisville to Seattle found on momondo in the last 72 hours is $311.
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 $292Free CancellationRating
7.8
8,699 reviews
Search Delta flights
United AirlinesPriceFrom $308Free CancellationRating
7.3
10,460 reviews
Search United Airlines flights
American AirlinesPriceFrom $336Free CancellationRating
7.0
12,228 reviews
Search American Airlines flights
SouthwestPriceFrom $372Free CancellationRating
8.0
4,215 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $430Free CancellationRating
7.9
13,136 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
Federal Way
Redmond
Lakewood
Lynnwood
Fife
Puyallup
Tukwila
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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