£269 Cheap Flights from Louisville (SDF) to Seattle (SEA)

View £269 flight on Tue, 12 May 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at £269 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much is a flight from Louisville Intl. Airport (SDF) to Sea-Tac Airport?
Based on airfares listed within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from SDF to Sea-Tac Airport start from . Make your booking ASAP to score the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Louisville Intl. Airport (SDF) to Sea-Tac Airport?
The majority of flights can be cancelled online, but whether you are charged a fee all comes down to your airline. If you do need to cancel your holiday, follow the instructions in the Customer Service Portal.
How do I find cheap flights from Louisville Intl. Airport (SDF) to SEA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SDF to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Louisville Intl. Airport (SDF) to Sea-Tac Airport?
You'll be soaring through the sky for a while, as the flight distance between Louisville Intl. Airport (SDF) and Seattle - Tacoma Intl. Airport (SEA) is 3,100 kilometres. Set up a playlist of your favourite tunes before leaving home to stay entertained during your flight.
Which airlines fly direct from Louisville Intl. Airport (SDF) to SEA?
Flying directly between Louisville Muhammad Ali Intl. Airport and Sea-Tac Airport isn't possible at this time. However, you'll still be able to find a flight to SeaTac with at least one stop.
Are Louisville Muhammad Ali Intl. Airport to SEA flight tickets cheaper when they're purchased at the last minute?
Tickets from SDF to Seattle - Tacoma Intl. Airport (SEA) are available up to 12 months prior to departure on Expedia. And although you may pick up a great last-minute deal, it's never a sure thing. Also, booking your flights ahead of time means you'll have more choices — and you can avoid being wedged in the dreaded middle seat! We regularly update our fares to make sure you get the biggest bargains, so check back often for all the latest specials.

Frequently asked questions

How do I find cheap flights from Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma 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 Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 70 connecting flights per day from Louisville, KY (SDF-Louisville Intl.) (SDF) to Seattle, WA (SEA-Seattle - Tacoma Intl.) (SEA). Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Dallas-Fort Worth Intl. (DFW).
What is the earliest flight from Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs at approximately 5:00 AM local time, operated by American Airlines. This is a seasonal service active in March and April. An early departure like this can help you maximise 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 Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) on a Friday, with around 51 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, United Airlines, and Delta Air Lines. Flight schedules are consistent throughout the week.
What are the most popular departure times for flights from Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the early morning, from 6am to 9am. About 32% 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 in Seattle with plenty of time.
How long does it take to fly from Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
A flight from SDF to SEA with a layover takes around 9 hours 20 minutes, 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 Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Select the "Business class" and "First class" filters when looking for SDF to SEA 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 Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma 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 Seattle from Louisville Intl. (SDF)?
From Louisville Intl. (SDF), you can fly directly into Seattle - Tacoma Intl. (SEA) to reach Seattle. Some flights may connect through major hubs like O'Hare Intl. (ORD), Midway Intl. (MDW), Denver Intl. (DEN) before reaching Seattle. 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 Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma 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 Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma 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 Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Louisville, KY (SDF-Louisville Intl.) to Seattle, WA (SEA-Seattle - Tacoma 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
Louisville Intl.
Destination airport
Seattle - Tacoma Intl.
Distance
3102 km

Book with confidence

Compare flights from Louisville to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Louisville to Seattle. Operating between them flights per day, 5 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Louisville Intl. to Seattle - Tacoma 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 Louisville Intl. (SDF) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Louisville to Seattle 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 Louisville Intl. to Seattle - Tacoma Intl. start at just and range up to .  

To find an even better deal, try  

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

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

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Louisville Intl. to Seattle - Tacoma 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 Louisville to Seattle easily and book with confidence

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