SDF - SEA

$173 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 1/28. 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

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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 41,299,237 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.

Recent round-trip flight deals from Louisville to Seattle

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Louisville to Seattle.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:50 am - 1:00 pmSDF-SEA
9h 10m1 stop
6:15 am - 3:55 pmSEA-SDF
6h 40m1 stop
$346Delta
Find Deal
Tue, Feb 25 - Tue, Mar 4
7:20 am - 5:20 pmSDF-SEA
13h 00m2 stops
7:30 am - 7:25 pmSEA-SDF
8h 55m1 stop
$351Southwest
Find Deal
Tue, Feb 25 - Tue, Mar 4
7:00 am - 12:07 pmSDF-SEA
8h 07m1 stop
7:00 am - 7:33 pmSEA-SDF
9h 33m1 stop
$356United Airlines
Find Deal
Mon, Jan 13 - Tue, Jan 21
12:19 pm - 7:00 pmSDF-SEA
9h 41m1 stop
7:14 am - 5:38 pmSEA-SDF
7h 24m1 stop
$366American Airlines
Find Deal
Thu, Jan 16 - Thu, Jan 23
2:00 pm - 9:11 pmSDF-SEA
10h 11m2 stops
6:10 am - 7:33 pmSEA-SDF
10h 23m2 stops
$384United Airlines
Find Deal
Mon, Jan 13 - Tue, Jan 21
5:00 am - 10:47 amSDF-SEA
8h 47m1 stop
1:45 pm - 12:38 amSEA-SDF
7h 53m1 stop
$391American Airlines
Find Deal
Mon, Feb 10 - Fri, Feb 14
6:00 am - 12:20 amSDF-SEA
21h 20m2 stops
5:28 pm - 5:57 pmSEA-SDF
21h 29m3 stops
$492Spirit Airlines
Find Deal
Tue, Feb 25 - Tue, Mar 4
6:00 am - 12:20 amSDF-SEA
21h 20m2 stops
5:28 pm - 5:57 pmSEA-SDF
21h 29m3 stops
$514Spirit Airlines
Find Deal
Tue, Feb 25 - Tue, Mar 4
5:38 am - 12:50 pmSDF-SEA
10h 12m1 stop
8:00 pm - 9:25 amSEA-SDF
10h 25m2 stops
$631Alaska Airlines
Find Deal
Sat, Jun 14 - Sat, Jun 21
5:00 am - 11:30 amSDF-SEA
9h 30m1 stop
10:36 pm - 10:51 amSEA-SDF
9h 15m1 stop
$686Alaska Airlines
Find Deal
Tue, Dec 31 - Thu, Jan 2

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 round-trip flights from Louisville to Seattle clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Louisville to Seattle, look for departures on Tuesdays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from Seattle, Saturday is the cheapest day to fly and Sunday is the most expensive.

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 round-trip 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 January, where tickets cost $375 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $607 and $575 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip 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 week.
To get a below average price on the flight from Louisville to Seattle, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low season

February

High season

July

Cheapest flight

$173
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 23% increase in price.
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 $173 for a one-way ticket and $346 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.

  • What is the most popular layover when flying to Seattle from Louisville?

    Chicago is the most popular layover city among KAYAK users traveling from Louisville to Seattle.

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

    The two airlines most popular with KAYAK users for flights from Louisville to Seattle are Southwest and Delta. With an average price for the route of $506 and an overall rating of 8.1, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $500 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

KAYAK’s top tips for finding a cheap flight from Louisville 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 9552 reviews
8.5Crew
7.2Food
7.9Comfort
7.1Entertainment
8.2Boarding
Airline reviews

Would like to see more consideration of older people. I have issues with being on my feet and walking too far. You put me in the last seat on the plane. Way in the back. Other than that everything was vey good.

8.0 ExcellentAnonymous, Dec 2024TUS - SEA
Read more Alaska Airlines reviews

Would like to see more consideration of older people. I have issues with being on my feet and walking too far. You put me in the last seat on the plane. Way in the back. Other than that everything was vey good.

Portland reservationist required me to check bag… tho always been ok as carryon before this experience. She didn’t ask my name or destination, seat number; only looked at boarding pass. She then sent my bag to wrong destination: Idaho Falls instead of Bzn, Mt. I spent 1 hr in Bzn trying to get this straightened out and locating where my bag might be? The Bozeman customer service was great and figured out the error that occurred in Seattle. They were wonderful, filed a claim and located my bag. They also offered me compensation for my problem which was helpful. Missed my meds last nite and following morning. Hope this will be resolved later today. 🙁

The app is very bugy, did not work well. Other than that it was ok.

Excellent gate to gate delivery by wheelchair staff. Really appreciate it!

The flight was delayed an hour and it was not disclosed to the passengers until it was time to board. There was no in-flight WiFI available and such poor communication overall. Unfortunate that I was going to miss my connecting flight with poor communication on alternatives.

My flight was cancelled last minute with zero acceptable options and reimbursement. I called Alaska and was told I had to pay for my own flight home so I bought a ticket for $500, I missed work worth $450. I had no babysitter for my child and her father missed work for another $480. I have diabetes and health conditions that require medication and proper diet which was extremely difficult with only $48 of vouchers and not enough medication for the extra 24 hour to 48 hour delays home. I understand things happen but the support Alaska gave wasn’t responsive enough to compensate or reimburse for the inconvenience. It took several hours to get a hotel for the night as Alaskas link was incorrect, vouchers were used and had no more rooms, people were walking the airport 10x to be told their next flights weren’t accurate home. If someone was disabled I don’t know how they even got support.

I liked The generous baggage allowance. I did not like No meals onboard.

The crew forced all group F passengers to check bags because they said there wasn't enough overhead space, but when we boarded there was TONS of space. I was pretty annoyed by that.

Flight was delayed because overhead bin didn’t close. The most insanely stupid thing I’ve ever heard.

I missed my connection and no one did anything g to help me

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

Left on time and arrived early this extending our 31 minute transfer. Bags made it also!

Delta was great the entertainment was outdated. Screen was very small and didn’t work.

The seats are uncomfortable, feels like a small seat pad on plywood.

The crew was very polite as I have a few handicaps and everything was made pleasant. Check-in was easy as I was brought on board by the wheelchair assistant. One flight attendant did make sure my personal item was carefully stored under the seat in front of me. I was made to feel welcome as a customer as I made my first trip with a few disabilities. Entertainment and wifi worked quite well. The only food service were snacks and drinks. Those were okay. Overall it was a very smooth flight and encouraged me to use Delta again.

My husband is very tall and we generally fly Delta Comfort. We used our companion benefit, and our seats were coach and extremely uncomfortable........ horrid even

My seat had no padding, it was literally plywood with a plastic cover. I could not change seats on my 10 hour flight. My excitement for this trip helped me deal with the pain.

I notice that every time I fly delta or any American carrier, the staff seem tired, overworked, and not at the service level I’m accustomed to in Asia. They frequently crash into my arm when coming down the aisle. Food is shoved at my face with no greeting or verbal cue. The food portions seemed much smaller than usual and didn’t see much wine or beverage options. This is comfort plus? The plane was old and tired. The bathroom was dripping with mineral stains after a long lack of cleaning. The power socket did not work, although the USB output did. I really wonder why I’m flying Delta, I think it’s time to switch to ANA.

The flight was great. The crew were a little terse about the size of my bag. It fit fine.

Screen didn’t play movies, do I was pretty boated the entire flight.

We arrived early and finally made it to our gate almost an hour after.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

We were delayed 3x and because I didn’t purchase my tickets directly from United Airlines I was told I Have to take care of it myself so I called Underpricer and they helped me but before I changed my flights I took the risk of sticking by what my tickets were and was lucky to have gotten on the original all flight with only 15 mins before take off. not sure if I will do this again

The planes are so dirty! Food crumbs and finger print smudges, Dust over the vents and carpet stains. It’s disgusting.

Everything good until we waited for jet bridge at SFO. Then pilot gets on speaker & said it won’t reach plane- too short, need to go to different gate. Then 5 min later, adjusted plane/jetbridge & all ok?!?

David went above and beyond to make our flight the best that it could be

Was a pain having to leave the plane and reboard but glad the plane was fixed

How badly can you screw up baggage claim? We were told to go to baggage claim too for our bags from this flight. Another flights bags were there. They finished up. More bags from a different flight arrived. Our bags did not Finally the baggage claim belt stopped working and and are flight was still listed on the arrivals for that baggage claim 2. And then nothing It turns out that they had been delivered not only the United baggage claim but far away on a Delta baggage claim No I never told us. It was only the people looking around who had been on the flight But I’m sure there was plenty of time for the employees to raffle through the bags and steal whatever they wanted

The bag drop personal were not helpful. There was no food on the flight. Boeing aircraft, lousy as always. Everything else was fine.

We had to wait almost an hour for the wheelchair porter to be ready to pick up my mother. And when she arrived in Newark airport the porter was not there and she started walking with her cane and her poor mobility. When the Newark porter found her they didn't want to transfer her bags to the wheelchair for her.

Flight attendant walked away once they landed and we were forced to wait another hour after an already 3hr delay.

No overhead space so all carryons were checked. No internet.

The flight was on time and everything went very smoothly.

A thousand choices for movies and nothing to watch. I avoid 'R' rated shows and others with violence and sexual content, which results in a handful of flicks to view and I have them already.

I think I paid for an extra legroom seat and to be honest, there was not a lot of space available for my not very long legs. The flight was totally full and the staff did everything possible to meet the needs of all passengers. My only concern was for the size and spacing of my seat.

Two issues. The plane was old and dirty. The armrest looked like an old car that had the vinyl rubbed off. The Seats in these aircraft are about as hard and uncomfortable. I want to tour Italy for a month and I want to buy a one-way ticket to Thailand but I will not sit in the seats these planes have. It is seriously stupid how hard they are.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

they should make XXL people buy two seats. sitting next to a person that was half on my seat and could not even buckle the seat belt, so I had to lean in the isle the whole trip.

The flight left a bit late, but arrived close to time expected…With the flight being close to full the crew did well serving drinks to all in a very timely fashion. The flight was a pleasure…

I thought since I upgraded my seat I would get some perks. Free water, free snacks. Free carry on luggage.

Seats were surprisingly comfortable, and crew was polite. I did not like the baggage fee prices, the minimal amount of flight choices for my area and the difficulty of the self service bag drop.

Lost MacBook, had time to retrieve, but was told I had no time. Need Silver MacBook back

It’s ridiculous to pay for carry-on luggage. I also wasn’t given an option to specify I have carry on bag at time of ticket purchase. I also could not specify I have carry on luggage at time of online check-in.

I’ve now flown Spirit a few times and while the general perception of Spirit I feel is poor, I’ve had a great experience each time. They do charge extra for everything but you should know that going in

The people were wonderful, but I hated the way they over charged for luggage, especially for stops which were charged the same as starting point to final destination.

First time flying Spirit and I was pleasantly surprised. Service was as advertised. Crew were very professional and friendly and excellent in dealing with a customer who felt ill on the flight.

Delayed fight LAS to LAX. OK, fog in LA, not your fault. But all your staff, onboard in in lounge, speak so fast, enunciate so poorly and often have a accent that it is impossible to understanding anything they are saying.

Very mean staff. No entertainment.. No WiFi, a baby cried for over 3 hours no staff offer to assist. My son $500 computer screen got damaged under the plane due to force check in of my bag. TERRIBLE EXPERIENCE!

Nothing I liked. Seats uncomfortable child behind kicking my seat entire flight. Delayed. Couldn't get free glass of water

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.
1/28Tue
1 stopDelta
8h 24mSDF-SEA
$173
1/28Tue
2 stopsSouthwest
9h 30mSDF-SEA
$178
1/7Tue
1 stopAmerican Airlines
7h 53mSDF-SEA
$193
4/8Tue
1 stopAmerican Airlines
7h 33mSDF-SEA
$208
1/7Tue
2 stopsUnited Airlines
12h 50mSDF-SEA
$223
1/7Tue
3 stopsUnited Airlines
17h 20mSDF-SEA
$228
12/27Fri
1 stopAlaska Airlines
8h 49mSDF-SEA
$473
12/26Thu
1 stopAlaska Airlines
9h 30mSDF-SEA
$539
12/26Thu
3 stopsSpirit Airlines
29h 29mSDF-SEA
$801
12/27Fri
3 stopsSpirit Airlines
21h 27mSDF-SEA
$804

Search by stops

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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.
12/19Thu
multi-stopDelta
8h 40mSDF-SEA
12/31Tue
multi-stopDelta
7h 32mSEA-SDF
$726
12/19Thu
multi-stopUnited Airlines
10h 18mSDF-SEA
12/31Tue
multi-stopUnited Airlines
12h 37mSEA-SDF
$731
12/19Thu
multi-stopUnited Airlines
15h 05mSDF-SEA
12/31Tue
multi-stopUnited Airlines
12h 37mSEA-SDF
$736
12/19Thu
multi-stopUnited Airlines
18h 16mSDF-SEA
12/31Tue
multi-stopUnited Airlines
12h 37mSEA-SDF
$741
12/23Mon
multi-stopDelta
8h 55mSDF-SEA
12/31Tue
multi-stopDelta
7h 32mSEA-SDF
$802
12/21Sat
multi-stopDelta
10h 02mSDF-SEA
1/5Sun
multi-stopDelta
7h 59mSEA-SDF
$806
12/21Sat
multi-stopAmerican Airlines
10h 47mSDF-SEA
1/4Sat
multi-stopAmerican Airlines
7h 20mSEA-SDF
$876
12/19Thu
multi-stopAmerican Airlines
8h 55mSDF-SEA
12/23Mon
multi-stopAmerican Airlines
7h 20mSEA-SDF
$912
12/23Mon
multi-stopAlaska Airlines
8h 49mSDF-SEA
12/27Fri
multi-stopAlaska Airlines
12h 01mSEA-SDF
$1,123
12/19Thu
multi-stopSpirit Airlines
31h 16mSDF-SEA
12/24Tue
multi-stopSpirit Airlines
33h 48mSEA-SDF
$1,802

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

Information on your arrival and departure airports

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