£266 Cheap Flights from Seattle (SEA) to Louisville (SDF)

View £266 flight on Thu, 2 Jul 2026Opens in a new window

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Popular airlines from Seattle-Tacoma International Airport (SEA) to Louisville International Airport (SDF)

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Cheap Flights from Seattle (SEA) to Louisville (SDF)

Prices were available within the past 7 days and start at £266 for one-way flights and £532 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, 2 Jul - Wed, 8 Jul
SEA
Seattle
SDF
Louisville
£532 Return, found 1 day ago
£532
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 2 Jul from Seattle to Louisville, returning Wed, 8 Jul, priced at £532 found 1 day ago
Alaska Airlines
Fri, 17 Jul - Fri, 24 Jul
SEA
Seattle
SDF
Louisville
£533 Return, found 3 days ago
£533
Return
found 3 days ago
Select Alaska Airlines flight, departing Fri, 17 Jul from Seattle to Louisville, returning Fri, 24 Jul, priced at £533 found 3 days ago
Alaska Airlines
Thu, 2 Jul - Wed, 8 Jul
SEA
Seattle
SDF
Louisville
£555 Return, found 1 day ago
£555
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 2 Jul from Seattle to Louisville, returning Wed, 8 Jul, priced at £555 found 1 day ago
Alaska Airlines
Thu, 2 Jul - Wed, 8 Jul
SEA
Seattle
SDF
Louisville
£556 Return, found 1 day ago
£556
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 2 Jul from Seattle to Louisville, returning Wed, 8 Jul, priced at £556 found 1 day ago
Alaska Airlines
Thu, 2 Jul - Wed, 8 Jul
SEA
Seattle
SDF
Louisville
£607 Return, found 1 day ago
£607
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 2 Jul from Seattle to Louisville, returning Wed, 8 Jul, priced at £607 found 1 day ago
Alaska Airlines
Fri, 17 Jul - Fri, 24 Jul
SEA
Seattle
SDF
Louisville
£631 Return, found 3 days ago
£631
Return
found 3 days ago
Select Alaska Airlines flight, departing Fri, 17 Jul from Seattle to Louisville, returning Fri, 24 Jul, priced at £631 found 3 days ago

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.) cost?
One-way flights typically cost between $743 and $2,992 and return flights often range between $743 and $2,992. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.)?
August is typically the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.), with average round-trip fares around 928 CAD. This is about 18% lower than the average price throughout the year. August sees lower prices because it's often a shoulder season for travel, after the peak summer rush but before the holiday season, when demand can dip. Other cheap months to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.) include January and October.*Averages based on flights available on Expedia in the last year.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.)?
Based on booking data from the past year, the cheapest months to fly from Seattle - Tacoma Intl. (SEA) to Louisville Intl. (SDF) are typically August and January, with average prices around 928 CAD. However, the most popular months for this route are October and March, which means you'll find plenty of flight options during those times. Since there isn't a month that is both cheapest and most popular, you can choose based on your priorities: save money in August or January, or enjoy more scheduling flexibility in October or March.*Prices based on flights available on Expedia in the last year.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.)?
There are approximately 73 connecting flights per day from Seattle - Tacoma Intl. (SEA) to Louisville Intl. (SDF). Some common connection points include O'Hare Intl. (ORD), Dallas-Fort Worth Intl. (DFW), and Denver Intl. (DEN).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to Louisville Intl. (SDF) typically departs at approximately 12:05 AM local time, operated by American Airlines. This is a seasonal service active in February and March. An early departure like this can help maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.)?
You'll typically find the most flights from Seattle - Tacoma Intl. (SEA) to Louisville Intl. (SDF) on a Wednesday, with around 51 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include United Airlines, American Airlines, and Alaska Airlines. Flight schedules are consistent throughout the week, so you'll find similar options on other days too.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Louisville Intl. (SDF) are in the morning, from 6am to 9am. About 33% of passengers prefer this time. Many major carriers, including American Airlines, Delta Air Lines and United Airlines, offer flights during this window. This timing works well because it allows you to get an early start on your travel day and arrive at your destination with plenty of time.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.)?
A flight from SEA to SDF with a layover takes around 9 hours, with the route covering approximately 1,940 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.)?
Select the "Business class" and "First class" filters when looking for SEA to SDF flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Louisville from Seattle - Tacoma Intl. (SEA)?
If you're planning to travel to Louisville from Seattle - Tacoma Intl. (SEA), you can fly into Louisville Intl. (SDF) Some flights may connect through major hubs like Denver Intl. (DEN), Sacramento Intl. (SMF), Sky Harbor Intl. (PHX) before reaching Louisville. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Louisville, KY (SDF-Louisville Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Louisville Intl.
Return price
£532
Distance
3102 km
Average flight time
7 hours 5 mins

Book with confidence

Compare flights from Seattle to Louisville easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seattle to Louisville. Operating between them flights per day, 16 airlines cover the route. And fly direct, getting you to Louisville Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Seattle - Tacoma Intl. to Louisville Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Seattle - Tacoma Intl. (SEA) to Louisville Intl. (SDF)

The easiest way to view the best deals on flights from Seattle to Louisville today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Seattle - Tacoma Intl. to Louisville Intl. start at just £532 and range up to £631.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Seattle and Louisville
  • booking your flight during July, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Seattle to Louisville flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Seattle - Tacoma Intl. to Louisville Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Seattle to Louisville easily and book with confidence

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