SEA - SDF

$120 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 6/6. 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.
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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

 
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.

Recent round-trip flight deals from Seattle to Louisville

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Louisville.
Discover the best prices for you by selecting your travel dates on KAYAK.
Spirit Airlines Logo
6:00 am - 2:40 pmSEA-SDF
29h 40m2 stops
Spirit Airlines Logo
6:48 pm - 12:10 amSDF-SEA
32h 22m2 stops
$262Spirit Airlines
Find Deal
Fri, May 23 - Mon, May 26
Delta Logo
10:55 pm - 10:08 amSEA-SDF
8h 13m1 stop
Delta Logo
7:34 pm - 11:53 pmSDF-SEA
7h 19m1 stop
$275Delta
Find Deal
Tue, Jun 3 - Tue, Jun 10
American Airlines Logo
1:10 am - 1:03 pmSEA-SDF
8h 53m1 stop
American Airlines Logo
7:00 am - 12:38 pmSDF-SEA
8h 38m1 stop
$276American Airlines
Find Deal
Mon, Jun 2 - Tue, Jun 10
American Airlines Logo
1:10 am - 1:03 pmSEA-SDF
8h 53m1 stop
American Airlines Logo
6:04 pm - 10:55 pmSDF-SEA
7h 51m1 stop
$278American Airlines
Find Deal
Mon, Jun 2 - Tue, Jun 10
Spirit Airlines Logo
3:20 pm - 10:18 amSEA-SDF
15h 58m2 stops
Spirit Airlines Logo
12:58 pm - 12:10 amSDF-SEA
38h 12m3 stops
$283Spirit Airlines
Find Deal
Sat, May 24 - Tue, May 27
United Airlines Logo
11:50 pm - 9:33 amSEA-SDF
6h 43m1 stop
United Airlines Logo
7:00 am - 11:32 amSDF-SEA
7h 32m1 stop
$291United Airlines
Find Deal
Sat, May 24 - Tue, May 27
United Airlines Logo
11:23 pm - 10:16 amSEA-SDF
7h 53m1 stop
United Airlines Logo
6:00 pm - 10:42 pmSDF-SEA
7h 42m1 stop
$309United Airlines
Find Deal
Wed, Jun 11 - Sat, Jun 14
Southwest Logo
10:55 pm - 10:15 amSEA-SDF
8h 20m1 stop
Southwest Logo
6:00 pm - 12:30 amSDF-SEA
9h 30m2 stops
$341Southwest
Find Deal
Wed, Jun 11 - Sat, Jun 14
Southwest Logo
3:05 pm - 1:05 amSEA-SDF
7h 00m1 stop
Southwest Logo
9:15 pm - 12:55 amSDF-SEA
6h 40m1 stop
$407Southwest
Find Deal
Thu, Jun 19 - Sun, Jun 22
Alaska Airlines Logo
8:13 am - 11:01 pmSEA-SDF
11h 48m2 stops
Alaska Airlines Logo
5:17 pm - 10:30 pmSDF-SEA
8h 13m1 stop
$612Alaska Airlines
Find Deal
Wed, May 14 - Tue, May 20
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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 $654 and $589 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$120
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 $120 for a one-way ticket and $262 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?

    oneworld, Star Alliance, and SkyTeam 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 Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Louisville are Delta and Alaska Airlines. With an average price for the route of $508 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 $627 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.

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 9972 reviews
8.5Crew
7.9Comfort
7.1Food
7.1Entertainment
8.1Boarding
Airline reviews

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

2.0 MediocreAnonymous, Apr 2025SEA - BOI
Read more Alaska Airlines reviews

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

Need to get on train for second flight it’s much nicer when all the gates are together for obvious reasons

Cramped, crowded aircraft. Poorly organized boarding. Tasteless crackers to eat. 40 minutes late. A standard US air travel experience.

Would not mind having movie options an available like Delta, but is not necessary. Did not have food, so cannot appropriately rate that section.

Three hour flight so snacks and basic drinks unless you pre buy as usual. Didn’t do my emtertainment as was tired after 23 hours of travel. You have to use your own device on US flights if travelers aren’t aware so if you only use your cell phone that can be small. Crew are great.

Awful. We got the last seats and they don't recline. We've been on this horrible journey since 6am and won't get to our destination almost a full day later. Oh and no food, either. Never again.

An uneventful flight is a good experience although one of the pilots gauges wasn’t working right so we had a half hour delay—no one can foresee that.

Plane was delayed and got me in past bedtime. But more importantly, my tsa precheck number wasn’t on my ticket so had to deal with the general line. Oh well, guess the delay helped that situation.

It was as good as flying can be, which is still very uncomfortable. Clean new aircraft, great crew.

Everything was good. The flight attendants were great. I was disappointed that there wasn’t any screens on the back of the seats to watch movies, tv, etc. I only had my phone to watch movies on.

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.

Plz don't take away free bags and free seating

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Only one drink pass through the cabin for a 4 hour flight. Quite rough and bumpy landing.

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Flight was delayed due to weather. Crew did a nice job of making us comfortable. No complain complaints.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

A bit rush for transit. Food and entertainment are not available

Multiple delays and not straight answer from the United team

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

leg space better than expected. two washrooms for one plane isn't enough.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Pitch was very small. Knees were on the seat back in front of me.

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Took off on time and successfully avoided weather that looked to be a problem along the way

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

Everything you need to know for your flight from Seattle to Louisville

Information on your arrival and departure airports

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