Cheap Frontier Airlines flights Louisville (SDF) to Seattle (SEA)

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
Flights from Louisville (SDF) to Seattle (SEA)
Origin airport
Louisville Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Southwest Airlines, Sun Country Airlines, United
Popular airline
Alaska Airlines
Distance
1939 mi

Frequently asked questions

How much is a Frontier Airlines flight from Louisville Intl. Airport (SDF) to Seattle - Tacoma Intl. Airport (SEA)?
Landing cheap one-way Frontier Airlines flights from SDF to SEA on Expedia is a cinch --- just filter by "Price (lowest to highest)." Or check out our budget-friendly round-trip fares for your next exciting getaway.**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.
What is the cheapest month to fly from SDF to SEA with Frontier Airlines?
Frontier Airlines flights to Seattle are often more affordable in the off-peak months of January and February. Whether you're in search of a round-trip or one-way ticket, you could score a better deal then.
What is the cheapest time to book flights from Louisville Intl. Airport (SDF) to Seattle - Tacoma Intl. Airport (SEA) with Frontier Airlines?
To find cheap Frontier Airlines fares from Louisville Intl. Airport (SDF) to Seattle - Tacoma Intl. Airport (SEA), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the cost. Sunday is usually the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**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.
Does Frontier Airlines fly nonstop from Louisville Intl. Airport (SDF) to Seattle - Tacoma Intl. Airport (SEA)?
Click on the "Nonstop" filter when searching for direct Frontier Airlines flights from SDF to SEA. You'll also be able to compare other carriers servicing the same direct trip.
What is the earliest Frontier Airlines flight from SDF to SEA?
Search Frontier Airlines's earliest flights from SDF to SEA by checking the "Early Morning" and "Morning" filters. Not only will you arrive sooner, early departures also have a 20% less chance of being canceled.**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.
What airports does Frontier Airlines fly into in Seattle?
Seattle - Tacoma Intl. Airport (SEA) is the main Seattle gateway for Frontier Airlines flights from Louisville Intl. Airport (SDF).
Why fly with Frontier Airlines from SDF to SEA?
A rewarding loyalty program and the ability to rack up points through Frontier Miles are the start of the reasons to leave from SDF to SEA with Frontier Airlines. Plus, when you join Expedia's free One Key™ program, you can receive OneKeyCash™* on top of any airline loyalty program earnings. It's yours to spend on your next adventure.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Frontier Airlines flight from Louisville Intl. Airport (SDF) to Seattle - Tacoma Intl. Airport (SEA)?
Typically, you can cancel or modify your flight, although there may be additional charges if you made your booking over 24 hours ago. Prefer to keep your options open? Make use of Expedia's "No cancel fee" or "Changes included" filter to find flights that won't charge you extra if you need to adjust your plans. To modify your itinerary, go to "Trips," select your flight and click on "Manage Booking" for more information.

Explore a world of travel with Expedia

*Available to One Key members.