$182+ Cheap flights from Louisville to Seattle (SDF - SEA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SEA
Nov 18 — Nov 251
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Louisville to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Louisville to Seattle
Cheapest
Best
Last-minute
One-way
Cheapest flights from Louisville to SeattleExplore the most affordable flight options available from Louisville to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 19, 2026.
Explore the most affordable flight options available from Louisville to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 19, 2026.
This Southwest deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:55 pm -
1 stop7h 50m
Thu 11/196:30 am -
1 stop6h 05m
Deal found 10/18![Southwest logo]()
$330
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:40 pm -
1 stop7h 18m
Fri 11/278:30 am -
1 stop7h 03m
Deal found 10/19![Delta logo]()
$355
This Southwest deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:55 am -
1 stop7h 05m
Fri 12/2511:20 am -
1 stop6h 15m
Deal found 10/18![Southwest logo]()
$356
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/712:40 pm -
1 stop7h 18m
Sat 11/148:30 am -
1 stop6h 50m
Deal found 10/14![Delta logo]()
$363
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:00 am -
2 stops11h 12m
Sat 11/147:00 am -
1 stop7h 00m
Deal found 10/14![United Airlines logo]()
$368
This Delta deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:40 pm -
1 stop7h 18m
Mon 11/2311:15 pm -
1 stop7h 54m
Deal found 10/15![Delta logo]()
$387
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/183:24 pm -
1 stop8h 55m
Sun 11/227:00 am -
1 stop8h 32m
Deal found 10/15![United Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:50 am -
1 stop7h 00m
Tue 12/86:30 am -
1 stop6h 05m
Deal found 10/19![Southwest logo]()
$400
This Southwest deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:10 am -
2 stops11h 55m
Fri 11/1312:15 am -
2 stops9h 40m
Deal found 10/14![Southwest logo]()
$405
This Delta deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:42 am -
1 stop8h 47m
Wed 11/2511:47 pm -
1 stop9h 13m
Deal found 10/15![Delta logo]()
$407
Best flights from Louisville to SeattleDiscover carefully curated flight deals from Louisville to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 19, 2026.
Discover carefully curated flight deals from Louisville to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 19, 2026.
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:05 am -
1 stop9h 25m
Fri 11/278:25 am -
1 stop9h 34m
Deal found 10/14![Delta logo]()
$363
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/183:24 pm -
1 stop8h 55m
Sun 11/227:00 am -
1 stop8h 32m
Deal found 10/15![United Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:10 am -
2 stops11h 55m
Fri 11/1312:15 am -
2 stops9h 40m
Deal found 10/14![Southwest logo]()
$405
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/712:40 pm -
1 stop7h 18m
Sat 11/148:30 am -
1 stop6h 50m
Deal found 10/14![Delta logo]()
$363
This Southwest deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/121:05 pm -
2 stops14h 05m
Sat 11/215:50 am -
1 stop12h 20m
Deal found 10/15![Southwest logo]()
$428
This Delta deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:55 pm -
1 stop8h 02m
Sat 11/2111:47 pm -
1 stop9h 13m
Deal found 10/15![Delta logo]()
$397
This Southwest deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/134:05 pm -
2 stops10h 00m
Sun 11/155:30 am -
1 stop6h 35m
Deal found 10/16![Southwest logo]()
$432
This United Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/183:20 pm -
1 stop9h 05m
Mon 12/215:00 am -
1 stop6h 21m
Deal found 10/18![United Airlines logo]()
$487
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/236:00 pm -
1 stop7h 32m
Mon 12/285:00 am -
2 stops10h 47m
Deal found 10/15![United Airlines logo]()
$488
This Delta deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/176:36 am -
1 stop7h 19m
Sun 1/246:05 am -
1 stop6h 12m
Deal found 10/16![Delta logo]()
$447
This Southwest deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:55 pm -
1 stop7h 40m
Fri 11/276:15 am -
1 stop8h 15m
Deal found 10/18![Southwest logo]()
$462
This United Airlines deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:10 am -
2 stops9h 39m
Thu 12/105:05 am -
1 stop6h 12m
Deal found 10/17![United Airlines logo]()
$492
Last-minute flights from Louisville to SeattleDiscover last-minute flight deals from Louisville to Seattle. Data last updated October 19, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Seattle. Data last updated October 19, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/712:40 pm -
1 stop7h 18m
Sat 11/148:30 am -
1 stop6h 50m
Deal found 10/14![Delta logo]()
$363
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:00 am -
2 stops11h 12m
Sat 11/147:00 am -
1 stop7h 00m
Deal found 10/14![United Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:10 am -
2 stops11h 55m
Fri 11/1312:15 am -
2 stops9h 40m
Deal found 10/14![Southwest logo]()
$405
This Southwest deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:55 pm -
1 stop7h 50m
Thu 11/196:30 am -
1 stop6h 05m
Deal found 10/18![Southwest logo]()
$330
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:00 am -
1 stop8h 19m
Sun 11/227:00 am -
1 stop8h 32m
Deal found 10/16![United Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1710:49 am -
1 stop7h 01m
Thu 11/266:00 am -
1 stop7h 54m
Deal found 10/15![Delta logo]()
$407
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/183:24 pm -
1 stop8h 55m
Sun 11/227:00 am -
1 stop8h 32m
Deal found 10/15![United Airlines logo]()
$397
This Delta deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:40 pm -
1 stop7h 18m
Mon 11/2311:15 pm -
1 stop7h 54m
Deal found 10/15![Delta logo]()
$387
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:40 pm -
1 stop7h 18m
Fri 11/278:30 am -
1 stop7h 03m
Deal found 10/19![Delta logo]()
$355
This Southwest deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:55 am -
1 stop7h 05m
Fri 12/2511:20 am -
1 stop6h 15m
Deal found 10/18![Southwest logo]()
$356
One-way flights from Louisville to SeattleSearch for one-way flight options from Louisville to Seattle. Find affordable one-way fares based on user searches. Data last updated October 19, 2026.
Search for one-way flight options from Louisville to Seattle. Find affordable one-way fares based on user searches. Data last updated October 19, 2026.
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:33 pm -
1 stop7h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Delta logo]()
$182
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/63:24 pm -
2 stops12h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![United Airlines logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:39 am -
3 stops33h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Multiple Airlines logo]()
$192
This Delta deal was found by Cheapflights users on 10/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/108:05 am -
1 stop9h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Delta logo]()
$204
This Southwest deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/134:05 pm -
2 stops10h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Southwest logo]()
$209
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:57 pm -
1 stop8h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![United Airlines logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/89:09 pm -
2 stops21h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Multiple Airlines logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/129:09 pm -
3 stops45h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Multiple Airlines logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:06 pm -
3 stops50h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Multiple Airlines logo]()
$248
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:00 am -
3 stops15h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![United Airlines logo]()
$252
Find flight deals from Louisville to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $330 (Southwest) |
One-way from | $182 (Delta) |
Popular in | June |
Cheapest in | January |
Average price | $435 |
Cheapflights Fare Finder
Customize your flight search to find flights from Louisville to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 19, 2026.
Use the filters below to find and compare flights from Louisville to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Fri 11/6
5:33 pm-10:05 pm
1 stop7h 32m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$182
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Fri 11/13
5:10 am-12:19 pm
1 stop10h 09m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$182
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Wed 11/11
9:02 am-7:17 pm
2 stops13h 15m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$187
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Tue 11/10
10:37 am-8:56 pm
2 stops13h 19m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$187
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Sat 11/14
1:32 pm-8:19 pm
1 stop9h 47m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$204
Quickest round-trip
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Fri 11/13
6:42 am-10:42 am
1 stop7h 00m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$204
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Thu 12/10
8:05 am-2:38 pm
1 stop9h 33m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$204
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Thu 12/10
8:50 am-5:50 pm
2 stops12h 00m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$209
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Fri 11/13
4:05 pm-11:05 pm
2 stops10h 00m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$209
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Sat 11/14
2:15 pm-9:19 pm
2 stops10h 04m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$209
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Louisville to Seattle
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to Seattle in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Louisville-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Louisville-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Louisville-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Louisville-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Louisville to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Louisville with our price prediction graph.
SDF-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Louisville to Seattle
How far ahead should I book a flight from Louisville to Seattle?
The best time to book flights from Louisville to Seattle is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Louisville to Seattle?
Currently, January is the cheapest month in which you can book a flight from Louisville to Seattle (average of $299). Flying from Louisville to Seattle in June is currently the most expensive (average of $588). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Louisville to Seattle?
Airfare is below average for this route at the moment.
Louisville to Seattle flights typically cost between $336 and $577 in November.The cheapest round-trip price found within the last 5 days was $330 on Southwest (Nov 12-Nov 19).
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated October 19, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Southwest, andDelta from Louisville to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Overall
7.9
Boarding
8.1
Comfort
7.8
Food
7.0
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Crew
8.5
Overall
7.9
Boarding
8.1
Comfort
7.8
Food
7.0
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Crew
8.5
Overall
7.9
Boarding
8.1
Comfort
7.8
Food
7.0
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Crew
8.5
Overall
7.9
Boarding
8.1
Comfort
7.8
Food
7.0
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Crew
8.5
Overall
7.9
Boarding
8.1
Comfort
7.8
Food
7.0
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Crew
8.5
Overall
7.9
Boarding
8.1
Comfort
7.8
Food
7.0
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Related info for your journey
Find useful and relevant information for your journey from Louisville to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ocean Shores
Ellensburg
Issaquah
Lakewood
Poulsbo
Marysville
Shoreline
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Louisville
Popular flights
Seattle flight routes
Alternative routes for Louisville to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Louisville to Seattle by cabin class
Find flights from Louisville to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Louisville and Seattle flights
Browse other Louisville and Seattle flight options. Last updated on October 19, 2026.
Other flights from Louisville
Browse through other flights departing from Louisville. Flights are based on user searches made on Cheapflights and were last updated on October 19, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 19, 2026.
Top 5 airlines flying from Louisville to Seattle
Discover the top 5 airlines that operate flights from Louisville to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$292 | Average$467 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$308 | Average$483 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$336 | Average$477 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$372 | Average$515 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$430 | Average$747 | FlexibilityNo cancel fee | On-time75% |