SEA - SDF

$123 Find Cheap Flights from Seattle to Louisville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Louisville departing on 8/20. 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
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Louisville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Louisville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Louisville, as well as popular online travel agencies
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Cheap Flights from Seattle to Louisville (SEA-SDF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Louisville 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Louisville

Wed, Sep 3 - Tue, Sep 16
Southwest Logo
1:40 pm - 12:25 amSEA-SDF
7h 45m1 stop
Southwest Logo
5:30 am - 11:15 amSDF-SEA
8h 45m1 stop
$245Southwest
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Thu, Aug 21 - Tue, Aug 26
Southwest Logo
5:15 am - 5:40 pmSEA-SDF
9h 25m2 stops
Southwest Logo
7:10 pm - 11:35 pmSDF-SEA
7h 25m1 stop
$250Southwest
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Thu, Sep 4 - Sat, Sep 20
Delta Logo
11:55 pm - 11:58 amSEA-SDF
9h 03m1 stop
Delta Logo
4:25 pm - 11:34 pmSDF-SEA
10h 09m1 stop
$258Delta
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Mon, Aug 18 - Wed, Aug 27
American Airlines Logo
11:30 pm - 11:44 amSEA-SDF
9h 14m1 stop
American Airlines Logo
2:45 pm - 8:19 pmSDF-SEA
8h 34m1 stop
$282American Airlines
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Tue, Sep 2 - Sat, Sep 13
Delta Logo
11:55 pm - 11:58 amSEA-SDF
9h 03m1 stop
Delta Logo
4:25 pm - 11:34 pmSDF-SEA
10h 09m1 stop
$285Delta
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Mon, Aug 18 - Wed, Aug 27
American Airlines Logo
11:30 pm - 11:44 amSEA-SDF
9h 14m1 stop
American Airlines Logo
2:45 pm - 11:40 pmSDF-SEA
11h 55m1 stop
$294American Airlines
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Tue, Sep 2 - Wed, Sep 17
United Airlines Logo
11:54 pm - 10:02 amSEA-SDF
7h 08m1 stop
United Airlines Logo
3:30 pm - 9:22 pmSDF-SEA
8h 52m1 stop
$335United Airlines
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Wed, Sep 3 - Tue, Sep 16
United Airlines Logo
11:11 am - 10:30 pmSEA-SDF
8h 19m1 stop
United Airlines Logo
9:05 am - 6:49 pmSDF-SEA
12h 44m2 stops
$340United Airlines
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Sun, Aug 31 - Mon, Sep 15
Alaska Airlines Logo
6:00 am - 4:21 pmSEA-SDF
7h 21m1 stop
Alaska Airlines Logo
10:00 am - 3:15 pmSDF-SEA
8h 15m1 stop
$472Alaska Airlines
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Mon, Jun 30 - Fri, Jul 4
Alaska Airlines Logo
8:34 am - 9:50 pmSEA-SDF
10h 16m1 stop
Alaska Airlines Logo
2:09 pm - 8:35 pmSDF-SEA
9h 26m1 stop
$522Alaska Airlines
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KAYAK's insights & trends for Seattle to Louisville flights

Get data-powered insights and trends into flights from Seattle to Louisville 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 Seattle to Louisville?

The average price of all round-trip flights from Seattle to Louisville clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Louisville on a Saturday and more expensive on a Sunday. On your return trip to Seattle, you should consider flying back on a Tuesday, and avoid Thursdays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Louisville, 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 Seattle to Louisville is January, where tickets cost $403 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $623 and $582 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Louisville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Louisville, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low seasonJanuary
High seasonJune
Cheapest flight$123
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from Seattle to Louisville

When to book flights from Seattle to Louisville

Are your dates flexible? Find out the best times to travel from Seattle to Louisville 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 Seattle to Louisville

  • What flight options do you have from Seattle to Louisville?

    Southwest Airlines, United Airlines, Alaska Airlines, and American Airlines offer connecting flights between Seattle and Louisville through Chicago. Delta Air Lines and Sun County Airlines have a layover in Minneapolis, while Spirit Airlines is in Las Vegas.

  • Which airline should I fly with young kids?

    Alaska Airlines offers priority boarding for families with young kids, so you can settle in early and stow your belongings. You can also bring onboard an FAA-approved child safety system, such as a car seat. This airline offers child-friendly amenities such as coloring books and in-flight entertainment to entertain your young one throughout the trip.

  • Which airline flying from Seattle to Louisville is ideal to fly economy class with carry-on and checked baggage?

    American Airlines allows you to fly economy class with one carry-on bag, such as a standard backpack, and one personal item, such as a purse or laptop bag. Also, when flying economy class on this airline, you can bring on board checked baggage not weighing more than 50 lbs. for a fee.

  • Which airline is ideal for passengers from Seattle to Louisville with disabilities?

    Delta Air Lines offers pre-boarding for passengers with disabilities, allowing you extra time to settle and receive assistance. You can also bring on board assistive devices such as wheelchairs or medical devices at no cost. Delta Air Lines also has flight attendants trained to aid passengers with disabilities throughout the flight, including meal service and communication support.

  • What is the cheapest flight from Seattle to Louisville?

    In the last 3 days, the lowest price for a flight from Seattle to Louisville was $123 for a one-way ticket and $245 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Seattle to Louisville?

    On your way to Louisville, you’ll fly out from Seattle/Tacoma Intl. You’ll be landing at Louisville Intl.

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

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

  • Which airline alliances offer flights from Seattle to Louisville?

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Louisville are Delta and Southwest. With an average price for the route of $476 and an overall rating of 8.0, Delta is the most popular choice. Southwest is also a great choice for the route, with an average price of $531 and an overall rating of 8.0.

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

    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 Seattle to Louisville.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Seattle 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 Seattle to Louisville?

    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 Louisville with an airline and back to Seattle with another airline. Booking your flights between Seattle and SDF 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 Seattle to Louisville?

    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 Louisville from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Louisville

  • Seattle-Tacoma International Airport (SEA) will be your departure airport from Seattle to Louisville. This airport is one of the busiest in the United States and is the primary airport serving the Seattle metropolitan area. Seattle-Tacoma International Airport is approximately 14 miles from Downtown Seattle and can conveniently be accessed through Interstate 5.
  • We recommend staying at a hotel near Seattle-Tacoma International Airport if you have an early morning flight to Louisville. Hilton Seattle Airport & Conference Center, DoubleTree by Hilton Hotel Seattle Airport, Crowne Plaza Seattle Airport, Radisson Hotel Seattle Airport, Red Lion Hotel Seattle Airport, and Holiday Inn Express & Suites Seattle Sea-Tac Airport will be your ideal choices. These hotels are near the airport and offer complimentary airport shuttle services.
  • Louisville Muhammad Ali International Airport (SDF) is the primary airport serving Kentucky and the surrounding region. This airport will be your destination airport on your trip from Seattle to Louisville, and you will be approximately 6 miles from Downtown Louisville.
  • Hotels near Louisville Muhammad Ali International Airport will be convenient accommodations when you land late at night in Louisville. Hampton Inn Louisville Airport, Holiday Inn Louisville Airport – Fair/Expo, Crowne Plaza Louisville Airport Expo Center, Courtyard Louisville Airport, Embassy Suites by Hilton Louisville Airport, and Four Points by Sheraton Louisville Airport offer complimentary airport shuttle services, in addition to being close to the airport.
  • Spirit Airlines is an environmentally conscious airline operating flights between Seattle and Louisville. This airline is at the forefront of reducing carbon emissions impact on the aviation industry by investing in sustainable fuel and fuel-efficient aircraft. Also, Spirit Airlines improves its business operations' long-term sustainability by participating in programs and initiatives such as carbon offsetting programs and creating awareness of sustainable aviation practices.

Reviews of the top 5 airlines serving from Seattle to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Louisville. 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 Seattle to Louisville? 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 10000 reviews
8.5Crew
7.1Entertainment
7.1Food
8.1Boarding
7.8Comfort
Airline reviews

Food was just ok..had snack box :( Crew was very nice

8.0 ExcellentAnonymous, Jun 2025SEA - MKE
Read more Alaska Airlines reviews

Food was just ok..had snack box :( Crew was very nice

Passengers were not informed timely of delays. The staff appeared like they didn't really care about the passengers.

Food and entertainment aren’t a thing on these regional flights. But it was a smooth flight. Could see gorgeous countryside through the large windows. The earplugs are a nice touch for the prop engines but the hum of the engines did not bother me. Grateful the option exists to easily get from A to B.

Both flights were delayed going to our destination and leaving, and communication about the delays was not great by the airlines, now the crews were phenomenal and great to be around!!

Delayed. It's not our first flight with them either, it's actually our 3rd and all 3 were delayed by hours each time. It was a myriad of delays. On one flight we boarded after being delayed for a little over an hr, only to be told we were going to sit in the plane for another hour before departing. Once landed, we waited another 40ish min to get to our gate. On another flight, flight was delayed just under 3 hrs but atleast we got to wait it out at the airport terminal. Its just a bad experience overall flying with Alaska Airlines.

We had to take the train to our next gate but had time to eat a meal. When to our next gate and asked employee about gate and got informed that gate had been changed so back on train to next gate. So thankful she was there and informed us of gate change. Because of the issue the boarding was slow but employees were there and busy helping all and keeping it organized.

Very pleasant and the flight felt like it went by quick

All flight entertainment is from your own device and there was an $8 charge to connect. also 1 drink and a small bag of pretzels was all that was given to us. other that that the seats were good and the flight itself was as expected.

It is very bad they do not give you money back

They lost our bag and it took them days to find it. Terrible communication and lots of lies about where it was. Their system hasn’t merged with Hawaiian yet they route people on shared flights with Hawaiian, creating an administrative nightmare.

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

I like for how they process during check in. It was very smoothly.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Flight was delayed long enough that I was misding my connecting flight. The agents could not get me on a comparable flight, nor could they get me s Main Cabin seat I had paid for, nor could they get me on a comparable connecting flight. The gate agent would not issue meal vouchers, even though I was delayed over six hours! I had to spend over an hour and 15 minutes with customer service on the phone to See if they could get me on a better flight and get a meal voucher. Customer service was not helpful enough in trying to find alternate flights and it Ended up taking me 24 hours for a 12 hour trip!! Delta does not provide upgrades NOR will they even give you a pass for a few hours to their lounge. They claim that they do not issue daily passes to their lounge anymore. I call BS since this would be no extra cost to them to provide excellent customer service and give you a few hours to relax in comfort when you’re sitting in a crowded airport and your flight has been screwed up for that many hours.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

Gate agent did not hold flight for connection, provided no assistance to get new flight

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

United airlines, mediocre at best. No issues , nothing great . Worked for me

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

Cramped seats. FAA should make airlines have more legroom, for even short people complain

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

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