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Cheap flights from Louisville to Seattle from $156

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.
Southwest Logo
7:35 pm - 11:35 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
7h 00m1 stop Chicago Midway
Southwest Logo
5:30 am - 3:15 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 45m1 stop Phoenix Sky Harbor Intl
$310Southwest
Fri, Dec 4 - Sat, Dec 12
American Airlines Logo
1:32 pm - 8:19 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
9h 47m1 stop Chicago O'Hare Intl
American Airlines Logo
5:10 am - 6:09 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
9h 59m1 stop Dallas/Fort Worth
$311American Airlines
Sat, Nov 14 - Wed, Nov 18
Delta Logo
7:05 am - 2:38 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
10h 33m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:50 am - 12:09 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
9h 19m1 stop Atlanta Hartsfield-Jackson
$311Delta
Sat, Dec 5 - Mon, Dec 14
Delta Logo
10:15 am - 2:23 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
7h 08m1 stop Detroit Metropolitan Wayne County
Delta Logo
11:05 pm - 9:55 amSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 50m1 stop Detroit Metropolitan Wayne County
$311Delta
Tue, Feb 16 - Thu, Feb 25
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
10:37 am - 5:59 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
10h 22m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
10:50 am - 8:52 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
7h 02m1 stop Chicago O'Hare Intl
$316United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
8:00 am - 4:32 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
11h 32m2 stops Denver Intl Los Angeles
United Airlines Logo
5:05 am - 2:17 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
6h 12m1 stop Denver Intl
$316United Airlines
Thu, Nov 26 - Thu, Dec 3
Southwest Logo
8:45 am - 1:15 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
7h 30m1 stop Chicago Midway
Southwest Logo
10:45 am - 11:45 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
10h 00m1 stop Phoenix Sky Harbor Intl
$319Southwest
Sun, Dec 6 - Sun, Dec 13
Alaska Airlines Logo
6:22 am - 12:00 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
8h 38m1 stop Chicago O'Hare Intl
Alaska Airlines Logo
10:59 am - 11:55 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
9h 56m1 stop Dallas/Fort Worth
$655Alaska Airlines
Sun, Dec 6 - Fri, Dec 11
Alaska Airlines Logo
6:22 am - 2:49 pmSDF  Louisville Intl-SEA Seattle/Tacoma Intl
11h 27m2 stops Chicago O'Hare Intl Boise Air Term. Gowen Fld
Alaska Airlines Logo
10:22 am - 9:38 pmSEA  Seattle/Tacoma Intl-SDF Louisville Intl
8h 16m1 stop Chicago O'Hare Intl
$660Alaska Airlines
Fri, Dec 4 - Sun, Dec 13

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Delta flights from Louisville to Seattle

Our best Delta deals on Louisville to Seattle flight tickets
Delta
Dec 5
SDF5:56 pmLouisville Intl
7h 08m
1 stop
SEA10:04 pmSeattle/Tacoma Intl
Dec 10
SEA11:15 pmSeattle/Tacoma Intl
8h 04m
1 stop
SDF10:19 amLouisville Intl
$311
Delta
Feb 17
SDF6:36 amLouisville Intl
7h 19m
1 stop
SEA10:55 amSeattle/Tacoma Intl
Mar 2
SEA10:35 amSeattle/Tacoma Intl
8h 06m
1 stop
SDF9:41 pmLouisville Intl
$345
Delta
Feb 19
SDF7:20 amLouisville Intl
10h 03m
1 stop
SEA2:23 pmSeattle/Tacoma Intl
Feb 25
SEA12:00 pmSeattle/Tacoma Intl
7h 55m
1 stop
SDF10:55 pmLouisville Intl
$355

United Airlines flights from Louisville to Seattle

Our best United Airlines deals on Louisville to Seattle flight tickets
United Airlines
Nov 14
SDF10:37 amLouisville Intl
10h 22m
2 stops
SEA5:59 pmSeattle/Tacoma Intl
Nov 18
SEA10:50 amSeattle/Tacoma Intl
7h 02m
1 stop
SDF8:52 pmLouisville Intl
$316
United Airlines
Nov 23
SDF3:24 pmLouisville Intl
8h 55m
1 stop
SEA9:19 pmSeattle/Tacoma Intl
Nov 27
SEA7:00 amSeattle/Tacoma Intl
7h 02m
1 stop
SDF5:02 pmLouisville Intl
$344
United Airlines
Nov 23
SDF2:10 pmLouisville Intl
10h 09m
2 stops
SEA9:19 pmSeattle/Tacoma Intl
Nov 27
SEA7:00 amSeattle/Tacoma Intl
7h 02m
1 stop
SDF5:02 pmLouisville Intl
$349

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

Fri 12/4

7:35 pm-11:35 pm

1 stop7h 00m

Seattle/Tacoma Intl

Sat 12/12

5:30 am-3:15 pm

1 stop6h 45m

$310

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 11/14

1:32 pm-8:19 pm

1 stop9h 47m

Seattle/Tacoma Intl

Wed 11/18

5:10 am-6:09 pm

1 stop9h 59m

$311

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sat 12/5

7:05 am-2:38 pm

1 stop10h 33m

Seattle/Tacoma Intl

Mon 12/14

11:50 am-12:09 am

1 stop9h 19m

$311

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Tue 2/16

10:15 am-2:23 pm

1 stop7h 08m

Seattle/Tacoma Intl

Thu 2/25

11:05 pm-9:55 am

1 stop7h 50m

$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

Sat 11/14

10:37 am-5:59 pm

2 stops10h 22m

Seattle/Tacoma Intl

Wed 11/18

10:50 am-8:52 pm

1 stop7h 02m

$316

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Thu 11/26

8:00 am-4:32 pm

2 stops11h 32m

Seattle/Tacoma Intl

Thu 12/3

5:05 am-2:17 pm

1 stop6h 12m

$316

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sun 12/6

8:45 am-1:15 pm

1 stop7h 30m

Seattle/Tacoma Intl

Sun 12/13

10:45 am-11:45 pm

1 stop10h 00m

$319

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Sun 12/6

6:22 am-12:00 pm

1 stop8h 38m

Seattle/Tacoma Intl

Fri 12/11

10:59 am-11:55 pm

1 stop9h 56m

$655

LouisvilleSeattle

SDF Louisville Intl - SEA Seattle/Tacoma Intl

SDFSEA

Louisville Intl

Fri 12/4

6:22 am-2:49 pm

2 stops11h 27m

Seattle/Tacoma Intl

Sun 12/13

10:22 am-9:38 pm

1 stop8h 16m

$660

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 $342 to $515.
The lowest price recently found on this route was $310.

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 $385.

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 $461 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 October 2026, prices for Louisville to Seattle flights are approximately 37% 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

$156

Fastest flight time

7h 30m

Direct flights

None
The best one-way flight to Seattle from Louisville in the past 72 hours is $156. The best round-trip flight deal from Louisville to Seattle found on momondo in the last 72 hours is $310.
The fastest flight from Louisville to Seattle takes 7h 30m
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 30m, 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
8,680 reviews
Search Delta flights
United AirlinesPriceFrom $308Free CancellationRating
7.3
10,442 reviews
Search United Airlines flights
American AirlinesPriceFrom $336Free CancellationRating
7.0
12,187 reviews
Search American Airlines flights
SouthwestPriceFrom $372Free CancellationRating
7.9
4,219 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $430Free CancellationRating
7.9
13,121 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
Redmond
Kent
Federal Way
Lakewood
Fife
Lynnwood
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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