CA $243 Cheap Flights from Louisville (SDF) to Seattle (SEA)

View CA $243 flight on Sat, Mar 7, 2026Opens in a new window

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

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at CA $243 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

The Annual Vacation Sale

Members save up to 40% on hotels and homes. Plan this year’s big trip and save.
Book now

Find the cheapest month to fly from Louisville (SDF) to Seattle (SEA)

September is typically the cheapest month to fly

From CA $277 - CA $665 per traveller.
Flight from Louisville to Seattle (SDF - SEA) route information
Origin airport
Louisville Intl.
Destination airport
Seattle - Tacoma Intl.
Distance
3102 km

Louisville to Seattle Flights

The easy way to book your flights from Louisville to Seattle 

With Expedia, it’s simple to find and book flights to Seattle from Louisville whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Seattle - Tacoma Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Louisville to Seattle today, tomorrow, or this week.  

 

Save dollars with cheap flights from Louisville Intl., SDF to Seattle - Tacoma Intl., SEA 

Sort your search results by price to find great deals on your flight from Louisville to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Louisville currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Seattle  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Seattle from Louisville 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Seattle with Expedia today.

Frequently asked questions

How much is a flight from SDF to Seattle - Tacoma Intl. Airport (SEA)?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip journey from Louisville Intl. Airport (SDF) to Sea-Tac Airport was . Great fares don't wait forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SDF to Seattle - Tacoma Intl. Airport (SEA)?
We understand that things come up unexpectedly, so we've made it as simple as possible for you to cancel your flight online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Louisville Intl. Airport (SDF) to Seattle - Tacoma Intl. Airport (SEA) that have flexible change policies?
Select our "No change fees" filter to find flexible ticketing options for your flight from Louisville Muhammad Ali Intl. Airport to Seattle - Tacoma Intl. Airport (SEA). This allows you to snag a low rate in advance and still have the freedom to reschedule without any extra fees. If the new flight costs more, you'll just cover the difference.
How many hours is the flight from Louisville Intl. Airport (SDF) to Sea-Tac Airport?
There are lots of ways to make the 7 hours and 21 minutes between Louisville Intl. Airport (SDF) and SEA go by faster. Be productive and sort through your camera roll or clear out all those unwanted emails. A snooze also helps pass the time!
How far is the flight from SDF to Seattle - Tacoma Intl. Airport (SEA)?
The flight distance from Louisville Muhammad Ali Intl. Airport to Seattle - Tacoma Intl. Airport (SEA) is 3,100 kilometres. Bring a snack, a drink and a laptop filled with movies. Keep yourself busy in the air and the hours will fly by.
Which airlines fly direct from SDF to Sea-Tac Airport?
If you want to fly straight from Louisville Intl. Airport (SDF) to Seattle - Tacoma Intl. Airport (SEA), you'll need to book a flight with at least one stop. Unfortunately, there aren't any airlines that fly directly between these airports.
Are Louisville Intl. Airport (SDF) to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices fluctuate, so not always. While last-minute flight deals between Louisville Muhammad Ali Intl. Airport and SEA are of course possible, it's also a good idea to keep track of prices well before you fly. In fact, some carriers release their prices up to a year prior to the departure date. Expedia is continuously updating the best bargains around, so keep checking and be ready to lock in your seat when the price dips.

Explore a world of travel with Expedia

*Available to Expedia members.