Cheap flights from Louisville to Seattle from $123
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Seattle departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Louisville to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Seattle?
In general, January is the cheapest month to fly from Louisville to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $381. If you don’t want to visit Seattle in January, then you should wait until February to fly from Louisville, when ticket prices are also cheap, with an average price of $381.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from Louisville is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $417. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Louisville because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $575.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from Louisville in the evening is the least expensive time of day to depart. momondo users have found prices as low as $436 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $526. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from Louisville when booking 9 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $450 when searching 9 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Louisville for as low as $367 on momondo.
Can stopping save me money on Louisville to Seattle flights?
You could potentially save up to 27% on your flight if you consider stops on a Louisville to Seattle flight.
How have Louisville to Seattle flight prices changed over time?
As of June 2025, prices for Louisville to Seattle flights are approximately 55% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Louisville Intl to Seattle/Tacoma Intl?
American Airlines, Southwest, and Spirit Airlines are the most popular carriers operating from Louisville Intl to Seattle/Tacoma Intl
What airlines fly to Seattle?
Delta, Alaska Airlines and American Airlines are the top three most popular airlines that fly to Seattle from Louisville according to our data. Delta is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 9 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
When to book flights from Louisville to Seattle
Cheap Louisville to Seattle (SDF to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Louisville to Seattle
How far is Louisville Intl to Seattle/Tacoma Intl by plane?
The distance between Louisville Intl and Seattle/Tacoma Intl is about 1938.2 mi. Flights usually cover this in 6h 50m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Louisville Intl Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Louisville Intl Airport to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from Louisville Intl Airport to Seattle/Tacoma Intl Airport?
There are 7 operators available for flights from Louisville Intl Airport to Seattle/Tacoma Intl Airport as of June 2025.
How old do you have to be to fly from Louisville Intl Airport to Seattle/Tacoma Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to Seattle?
momondo data reveals that the most frequently booked airline on the route from Louisville to Seattle is American Airlines, representing 42% of all bookings. The subsequent popular airlines are United Airlines at 21%, Delta at 18%, and Southwest at 11%.
Best airlines flying from Louisville to Seattle
Compare and see reviews for airlines that fly from Louisville to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $227 | Free Cancellation | Rating 6.3 8,060 reviews | |||
| PriceFrom $242 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $256 | Free Cancellation | Rating 6.9 345 reviews | |||
| PriceFrom $293 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom $324 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $356 | Free Cancellation | Rating 8.0 4,278 reviews | |||
| PriceFrom $436 | Free Cancellation | Rating 8.0 10,000 reviews |
Traveling to a place near Seattle?
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Why should I use momondo to find a flight deal from Louisville to Seattle?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Louisville to Seattle. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Louisville to Seattle with flexible booking policies on momondo?
All flight searches from Louisville to Seattle on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Louisville to Seattle?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Louisville.
I’m not ready to book a flight from Louisville to Seattle right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Louisville to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.