$219 Cheap Alaska Airlines flights Louisville (SDF) to Seattle (SEA)

Landing cheap one-way Alaska Airlines flights from SDF to SEA from $219 on Expedia is simple — just filter by “Price (lowest to highest).” Or check out our affordable return fares from $415 for your next break.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the least expensive months to fly to Seattle with Alaska Airlines. You could also find fantastic deals on one-way and round-trip tickets in February.

Begin your search one to three months ahead of your travel date to find cheaper fares on Alaska Airlines flights from Louisville Intl. Airport (SDF) to Seattle - Tacoma Intl. Airport (SEA). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Nail your timing, and you can enjoy significant savings on domestic trips.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Enter your dates, click search and check “Nonstop” on Expedia to browse any direct flights from SDF to SEA with Alaska Airlines or other airlines.

To find the earliest departures from SDF to SEA with Alaska Airlines, filter your results by “Early Morning” and “Morning.” Choosing an early flight generally means you’ll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Alaska Airlines flights from Louisville Intl. Airport (SDF) to Seattle arrive at Seattle - Tacoma Intl. Airport (SEA). This is the main entry point to this city.

Offering an excellent in-flight experience and top-tier customer service, Alaska Airlines is a favorite for many passengers heading from SDF to SEA. Plus, if you’re a Mileage Plan and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be used on future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You can usually reschedule or cancel your flight, although additional fees may apply if your booking was made more than 24 hours ago. Want to keep your options open? Apply the “Changes included” and “No cancel fee” filters to find flights that won’t charge extra if you need to adjust your plans. To update your itinerary, go to “Trips,” select your flight and click on “Manage Booking” for more information.