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Cheap flights from Louisville to Seattle from $113

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Seattle departing on 8/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Louisville to Seattle

Cheap round-trip flights

Delta Logo
1:20 pm - 8:32 pmSDF-SEA
10h 12m1 stop
Delta Logo
9:20 pm - 9:51 amSEA-SDF
9h 31m1 stop
$245Delta
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Tue, Oct 21 - Sat, Oct 25
United Airlines Logo
3:30 pm - 11:15 pmSDF-SEA
10h 45m2 stops
United Airlines Logo
5:00 am - 2:27 pmSEA-SDF
6h 27m1 stop
$250United Airlines
Find Deal
Tue, Oct 21 - Sat, Oct 25
Southwest Logo
11:55 am - 7:50 pmSDF-SEA
10h 55m2 stops
Southwest Logo
5:00 am - 7:30 pmSEA-SDF
11h 30m2 stops
$255Southwest
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Tue, Oct 21 - Sat, Oct 25
Southwest Logo
4:00 pm - 10:30 pmSDF-SEA
9h 30m2 stops
Southwest Logo
11:10 pm - 12:25 pmSEA-SDF
10h 15m1 stop
$256Southwest
Find Deal
Sat, Aug 16 - Mon, Aug 25
American Airlines Logo
2:42 pm - 8:09 pmSDF-SEA
8h 27m1 stop
American Airlines Logo
5:26 am - 5:34 pmSEA-SDF
9h 08m1 stop
$258American Airlines
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Fri, Sep 19 - Mon, Sep 29
American Airlines Logo
7:32 am - 2:46 pmSDF-SEA
10h 14m1 stop
American Airlines Logo
12:34 am - 1:47 pmSEA-SDF
10h 13m1 stop
$260American Airlines
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Tue, Oct 21 - Fri, Oct 24
United Airlines Logo
7:22 pm - 11:59 pmSDF-SEA
7h 37m1 stop
United Airlines Logo
5:00 am - 2:23 pmSEA-SDF
6h 23m1 stop
$280United Airlines
Find Deal
Sat, Aug 9 - Sat, Aug 16
Spirit Airlines Logo
6:26 pm - 4:25 pmSDF-SEA
24h 59m2 stops
Spirit Airlines Logo
5:30 pm - 3:36 pmSEA-SDF
19h 06m2 stops
$313Spirit Airlines
Find Deal
Mon, Aug 4 - Wed, Aug 6
Spirit Airlines Logo
8:13 pm - 4:25 pmSDF-SEA
23h 12m3 stops
Spirit Airlines Logo
5:30 pm - 3:36 pmSEA-SDF
19h 06m2 stops
$328Spirit Airlines
Find Deal
Mon, Aug 4 - Wed, Aug 6
Delta Logo
6:00 am - 4:24 pmSDF-SEA
13h 24m2 stops
Delta Logo
6:00 am - 6:40 pmSEA-SDF
9h 40m1 stop
$395Delta
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Sat, Aug 16 - Mon, Aug 25

Delta flights from Louisville to Seattle

Our best Delta deals on Louisville to Seattle flight tickets
Delta
Oct 21
SDF1:20 pmLouisville Intl
10h 12m
1 stop
SEA8:32 pmSeattle/Tacoma Intl
Oct 25
SEA9:20 pmSeattle/Tacoma Intl
9h 31m
1 stop
SDF9:51 amLouisville Intl
$245
Find similar
Delta
Aug 16
SDF6:00 amLouisville Intl
13h 24m
2 stops
SEA4:24 pmSeattle/Tacoma Intl
Aug 25
SEA6:00 amSeattle/Tacoma Intl
9h 40m
1 stop
SDF6:40 pmLouisville Intl
$395
Find similar
Delta
Jul 27
SDF7:05 amLouisville Intl
8h 04m
1 stop
SEA12:09 pmSeattle/Tacoma Intl
Aug 13
SEA11:55 pmSeattle/Tacoma Intl
9h 03m
1 stop
SDF11:58 amLouisville Intl
$428
Find similar

United Airlines flights from Louisville to Seattle

Our best United Airlines deals on Louisville to Seattle flight tickets
United Airlines
Oct 21
SDF3:30 pmLouisville Intl
10h 45m
2 stops
SEA11:15 pmSeattle/Tacoma Intl
Oct 25
SEA5:00 amSeattle/Tacoma Intl
6h 27m
1 stop
SDF2:27 pmLouisville Intl
$250
Find similar
United Airlines
Aug 9
SDF7:22 pmLouisville Intl
7h 37m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
Aug 16
SEA5:00 amSeattle/Tacoma Intl
6h 23m
1 stop
SDF2:23 pmLouisville Intl
$280
Find similar
United Airlines
Aug 8
SDF7:20 pmLouisville Intl
7h 39m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
Aug 16
SEA5:00 amSeattle/Tacoma Intl
6h 23m
1 stop
SDF2:23 pmLouisville Intl
$314
Find similar

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 cheapest month to fly to Seattle?

In general, October 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 $370. If you don’t want to visit Seattle in October, then you should wait until January to fly from Louisville, when ticket prices are also cheap, with an average price of $381.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Louisville is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $417. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Louisville because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $575.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Louisville in the evening is the least expensive time of day to depart. momondo users have found prices as low as $436 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $526. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight 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 $447 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 $360 on momondo.

Can stopping save me money on Louisville to Seattle flights?

You could potentially save up to 2% on your flight if you consider stops on a Louisville to Seattle flight.

How have Louisville to Seattle flight prices changed over time?

As of July 2025, prices for Louisville to Seattle flights are approximately 16% 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

$113

Fastest flight time

6h 40m

Direct flights

None

Airports in Seattle

1 airport
The best one-way flight to Seattle from Louisville in the past 72 hours is $113. The best round-trip flight deal from Louisville to Seattle found on momondo in the last 72 hours is $245.
The fastest flight from Louisville to Seattle takes 6h 40m
There are no direct flights from Louisville to Seattle. Popular non-direct route for this connection is Louisville Intl Airport - Seattle/Tacoma Intl Airport.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
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  • 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 40m, 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
Spirit AirlinesPriceFrom $239Free CancellationRating
6.3
8,046 reviews
Search Spirit Airlines flights
DeltaPriceFrom $242Free CancellationRating
8.0
7,956 reviews
Search Delta flights
Sun Country AirPriceFrom $256Free CancellationRating
6.9
335 reviews
Search Sun Country Air flights
United AirlinesPriceFrom $274Free CancellationRating
7.4
8,858 reviews
Search United Airlines flights
American AirlinesPriceFrom $322Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $354Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $436Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Olympia
Renton
Kent
Federal Way
Lynnwood
Puyallup
Marysville
Tukwila
Kirkland
Shoreline
Lakewood
Fife
Cle Elum
Centralia
Westport
Redmond

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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