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SDF - SEA

$78 Find cheap flights from Louisville to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Louisville to Seattle departing on 5/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 6/3
Mon 6/10

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Louisville to Seattle.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Louisville to Seattle.
In the last 7 days travelers have searched 43,693,958 times on KAYAK, and here is why:

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Cheap flight deals from Louisville to Seattle (SDF-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Louisville to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
8:42 pm - 8:32 amSDF-SEA
14h 50m1 stop
9:28 am - 7:42 pmSEA-SDF
7h 14m1 stop
$196Spirit Airlines
Find Deal
Wed, Jun 5 - Wed, Jun 12
11:26 am - 7:48 pmSDF-SEA
11h 22m1 stop
5:10 am - 8:53 pmSEA-SDF
12h 43m1 stop
$240American Airlines
Find Deal
Wed, Jun 5 - Tue, Jul 2
8:52 pm - 8:45 amSDF-SEA
14h 53m1 stop
9:35 am - 7:52 pmSEA-SDF
7h 17m1 stop
$249Spirit Airlines
Find Deal
Sat, May 18 - Fri, May 24
12:50 pm - 10:50 pmSDF-SEA
13h 00m1 stop
11:59 pm - 6:35 pmSEA-SDF
15h 36m1 stop
$250Sun Country Air
Find Deal
Fri, May 31 - Thu, Jun 13
9:45 am - 10:54 pmSDF-SEA
16h 09m1 stop
11:59 pm - 12:15 pmSEA-SDF
9h 16m1 stop
$319Sun Country Air
Find Deal
Fri, Jun 28 - Sun, Jun 30
11:26 am - 7:48 pmSDF-SEA
11h 22m1 stop
1:14 am - 1:54 pmSEA-SDF
9h 40m1 stop
$335American Airlines
Find Deal
Wed, Jun 5 - Mon, Jul 1
7:00 am - 11:50 amSDF-SEA
7h 50m1 stop
8:38 am - 9:30 pmSEA-SDF
9h 52m2 stops
$488United Airlines
Find Deal
Fri, Sep 27 - Sat, Oct 12
2:20 pm - 10:12 pmSDF-SEA
10h 52m2 stops
10:30 pm - 10:44 amSEA-SDF
9h 14m1 stop
$519United Airlines
Find Deal
Tue, Jul 16 - Tue, Jul 23
6:15 pm - 10:25 pmSDF-SEA
7h 10m1 stop
6:00 am - 5:24 pmSEA-SDF
8h 24m1 stop
$568Delta
Find Deal
Sat, Jun 1 - Sat, Jun 8
7:35 am - 2:10 pmSDF-SEA
9h 35m1 stop
12:40 am - 1:06 pmSEA-SDF
9h 26m1 stop
$658Delta
Find Deal
Wed, Jul 3 - Sun, Jul 7

Flights from Louisville to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from Louisville to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Louisville to Seattle?

The average price of all flights from Louisville to Seattle clicked on KAYAK for each day over the last 12 months.
When flying from Louisville to Seattle, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Louisville, you’ll find the best rates on Thursdays and the most expensive ones on Mondays.

What is the cheapest month to fly from Louisville to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Louisville to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Louisville to Seattle is October, where tickets cost $368 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is $615 and $552 respectively.

How far in advance should I book a flight from Louisville to Seattle?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Louisville to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Louisville to Seattle, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 87 days before departure.

Which airlines provide the cheapest flights from Louisville to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Seattle from Louisville were found on Spirit Airlines ($78) and Sun Country Air ($145), and the lowest round-trip tickets were found on Spirit Airlines ($196) and American Airlines ($240).

Good to know

Low season

February

High season

June

Cheapest flight

$78
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Louisville to Seattle

When to book flights from Louisville to Seattle

Are your dates flexible? Find out the best times to travel from Louisville to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Louisville to Seattle

  • How do I get to downtown Seattle from Seattle–Tacoma International Airport (SEA)?

    SEA is connected to downtown Seattle via the LINK Light Rail system at the Airport Parking Garage, Level 4, which operates every 6 to 15 minutes on weekdays and 10 to 15 minutes on weekends and holidays. The ride to downtown Seattle takes around 40 minutes. You can also take the King County Metro buses, which connect the airport to downtown Seattle. Other options include the Sound Transit express buses, taxis, car rentals, ridesharing, and hotel shuttles.

  • Which airlines offer an unaccompanied minor service on flights from Louisville to Seattle?

    American Airlines, United Airlines, and Delta Airlines offer an unaccompanied minor service for children flying alone from Louisville to Seattle. This service is mandatory for children aged 8 to 14 and optional for children aged 15 to 17 on all airlines. Children below 8 are only allowed to travel alone on direct flights. Your child will be escorted and receive necessary help throughout the flight.

  • What assistance does Louisville Muhammad Ali International Airport (SDF) offer travelers with limited mobility?

    Travelers with special needs or reduced mobility flying through Louisville Muhammad Ali International Airport (SDF) can access several services and amenities, including accessible parking, wheelchair assistance, accessible restrooms, specially-designed ramps, elevators, and the GoodMaps program to enable travelers with low vision to move through the terminal safely. For wheelchair assistance, contact your airline when making your reservation.

  • Are there hotels near Seattle–Tacoma International Airport (SEA)?

    For hotels close to Seattle–Tacoma International Airport (SEA), you can check into Hilton Seattle Airport & Conference Center, Radisson Hotel Seattle Airport, Crowne Plaza Seattle Airport, Red Roof Inn Seattle Airport SEATAC, La Quinta Inn & Suites Seattle SeaTac Airport, Red Lion Hotel Seattle Airport, which offer a free shuttle from the airport.

  • What is the cheapest flight from Louisville to Seattle?

    In the last 3 days, the lowest price for a flight from Louisville to Seattle was $78 for a one-way ticket and $196 for a round-trip.

  • Do I need a passport to fly between Louisville and Seattle?

    No

  • Which aircraft models fly most regularly from Louisville to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Louisville to Seattle?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Louisville and Seattle, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Louisville to Seattle, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Louisville to Seattle are Delta and Alaska Airlines. With an average price for the route of $507 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $702 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Louisville to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Louisville to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Louisville to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Louisville is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Louisville to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Louisville with another airline. Booking your flights between Louisville and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Louisville to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Louisville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from SDF to Seattle

  • The Louisville (SDF) to Seattle (SEA) route is mainly served by one-stop flights. Common layover cities for one-stop flights on this route include Chicago (ORD), Las Vegas (LAS), Dallas (DFW), Detroit (DTW), Denver (DEN), Minneapolis (MSP), Charlotte (CLT), Los Angeles (LAX), Houston (IAD), and Atlanta (ATL). The layover city depends on the flight route.
  • For Business Class flights from Louisville to Seattle, consider booking American Airlines, United Airlines, or Delta Airlines, which offer this travel option on some of their connecting flights on this route. General Business Class benefits and amenities these airlines offer include spacious cabins with comfortable seats, special baggage allowance, premium dining, priority check-in and boarding, in-flight entertainment, and access to specific lounges.
  • American Airlines, United Airlines, Spirit Airlines, and Delta Airlines have no maximum weight limit for carry-on bags on flights from Louisville to Seattle. However, your carry-on bag and personal item shouldn’t exceed the required dimensions and perfectly fit in the overhead compartment and underneath the seat in front of you.
  • If you’re mindful of the environment, you can book Spirit Airlines, American Airlines, United Airlines, Alaska Airlines, or United Airlines, which have reduced carbon emissions on their flights from Louisville to Seattle.
  • From Seattle, you can fly to other cities within the U.S., like Los Angeles, San Francisco, Dallas, Houston, Phoenix, Chicago, New York City, Las Vegas, and Denver, or international destinations like London, Vancouver, Toronto, Tokyo, Dubai, Seoul, Beijing, Amsterdam, Frankfurt, and Mexico City.
See more tips

Top 5 airlines serving from Louisville to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Louisville to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Louisville to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9128 reviews
8.6Crew
7.3Entertainment
7.9Comfort
7.3Food
8.2Boarding
Airline reviews

They oversold my flight by 9 seats so when I went to check in I was not assigned a seat and the only one available if I didn’t want to chance it were 100 dollars more

8.0 ExcellentAnonymous, May 2024DFW - SEA
Read more about Alaska Airlines reviews

They oversold my flight by 9 seats so when I went to check in I was not assigned a seat and the only one available if I didn’t want to chance it were 100 dollars more

Was not happy that we had to wait an additional 50 minutes for passengers that were still in TSA. This delay made us miss our connecting flight in Seattle to get home to tuck in our two little toddlers. We ran off the plane and ran across the entire airport trying to make this flight only to get to the gate to see that they have ended boarding. So they were willing to wait for passengers in Hawaii but not Seattle?? Especially when this wasn't even our fault. I expect to receive miles for missing our flight and spending an additional 4 hours in Seattle.

Better organizing of entry and exit onto the plane regarding all of the baggage people haul on. There should be a better system so those with no baggage can get in and out more quickly. The baggage haul-on situation is absurd.

It was a great experience, although our seat was taken and we did not want to be rude and ask the person to move. Flight Attendants need to make sure that people should be in their assign sitting that are paid for. Other then that, we had a great flying experience with Alaska Airlines.

Too many people with oversized carry-ons. Uncomfortable seats. flight was too crowded.

Assigned last seat in row Did not recline at all Alaska Air seemed to have more leg room than my last few flights on United Yay!

The WIFI didn't work well enough to get through even 5 minutes of a movie I had selected (it just kept pausing and spinning), and I just gave up and read a book. The selection of movies was a little sparse though, so reading wasn't that bad of an option. This was an older 737-800, with undersized overhead bins -- but it doesn't make sense to me that we are told to slide our bags in with the wheels facing us (most people ignore that and put the handles facing us). This makes it more difficult to remove the bags (no handle). The flight went well, and the fruit/cheese platter I pre-ordered was good -- although it is a little annoying to have to pre-order for this (but I suppose it saves time). When I pre-order it automatically gets charged to my personal credit card (Alaska VISA), when I'd prefer to use my corporate card for that on business trips.

It was our baby’s first flight and everything went perfect. The flight attendant gave him his first set of wings and we were smooth flying from there.

My flight went off without any hitch or issue. I anticipate issues every time I fly, luckily, I was wrong on this trip.

It was much better than expected. Short flight and smaller plane so no entertainment or food.

Delta is one of the best airlines I have flown

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

Delta needs to step up the meals and snacks. They have been serving the same two meals for three years.... It is time to change it up.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

Crew were fine, drinks and snacks were as well but we were delayed for around 2 hrs which made our entry into Mexico delayed as well with the influx of arrivals at the same time. Sort of wasted our first day of vacation. We left Pittsburgh at 630am and did not arrive in Mexico until late dinner time.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

They gave my seat away although it was a connecting flight with them and the flight was a bit delayed.

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

WiFi connected but only let you go to the AA website, not even text messaging worked.

Too bad that first class seats do not recline significantly causing discomfort

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

this is starting to seem like an american airlines standard. delayed flights and fake apologies… getting tired of it

The crew was not great or professional. It seemed like they didn't really want to be there. A true lack of effort for accommodating customers.

Everything was really good but the seats are not very comfortable.

I paid for WiFi, but it (WiFi) was very very slow, will never take again! Impossible open Utube 😤😤😤

I had no legroom, although I paid for extra legroom. I could barely put my bag in front of my feet and under the seat. The Wi-Fi was horrible. In fact the flight attendant said that they had to reboot it and see if it was going to work and never did.

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

Overall it was a miserable experience... I will never fly spirit for more than a 3 hour flight or overnight.

The boarding attendant was slightly rude when I asked about checking our stroller. Made me feel like I was bothering her.

My wife and I are both handicapped and at boarding they upgraded us to a seat closer to the front rather than all the way towards the back. Much appreciated.

Not much seat room, but that was unexpected. But the seat headrest was very uncomfortable.

First the good, everyone was friendly and efficient. Flight was smooth and plane was very clean and new. Now the bad, seats have almost no padding on your behind. I was in exit row so I had tons of leg room for a 6' 2" bean pole with long legs. Everything was extra - water, soda, snacks everything besides oxygen. Ya get what you pay for, and my flight was cheap as you could ever want it, so no worries.

Book cheap flights from Louisville to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Louisville to Seattle found on KAYAK in the last 72 hours.
5/17Fri
1 stopSpirit Airlines
14h 53mSDF-SEA
$78
5/29Wed
1 stopSpirit Airlines
14h 53mSDF-SEA
$92
6/4Tue
1 stopDelta
9h 37mSDF-SEA
$183
6/25Tue
1 stopAmerican Airlines
7h 29mSDF-SEA
$209
9/14Sat
2 stopsUnited Airlines
18h 22mSDF-SEA
$243
6/4Tue
2 stopsUnited Airlines
17h 12mSDF-SEA
$257
6/16Sun
1 stopDelta
7h 12mSDF-SEA
$258
5/21Tue
1 stopAmerican Airlines
9h 13mSDF-SEA
$289
7/4Thu
1 stopAlaska Airlines
10h 25mSDF-SEA
$303
5/23Thu
1 stopAlaska Airlines
10h 17mSDF-SEA
$369

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Last minute flights from Louisville to Seattle

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Louisville to Seattle that are departing in the next 10 days.
5/4Sat
multi-stopSpirit Airlines
15h 06mSDF-SEA
5/11Sat
multi-stopSpirit Airlines
7h 17mSEA-SDF
$559
5/4Sat
multi-stop
15h 06mSDF-SEA
5/11Sat
multi-stop
22h 00mSEA-SDF
$644
5/4Sat
multi-stop
24h 54mSDF-SEA
5/11Sat
multi-stop
22h 00mSEA-SDF
$701
5/4Sat
multi-stop
24h 54mSDF-SEA
5/11Sat
multi-stop
36h 14mSEA-SDF
$773
5/4Sat
multi-stopAmerican Airlines
10h 20mSDF-SEA
5/10Fri
multi-stopAmerican Airlines
11h 52mSEA-SDF
$2,239

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Louisville - Seattle Flights

Departure:

Louisville (SDF)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Louisville

Cabin classes: