$182+ Cheap flights from Seattle to Louisville (SEA - SDF)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SDF
Aug 29 — Sep 51
Round-trip
1 adult, Economy
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Cheapest flights from Seattle to LouisvilleExplore the most affordable flight options available from Seattle to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2026.
Explore the most affordable flight options available from Seattle to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2026.
This Southwest deal was found by Cheapflights users on 7/26. 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 12/55:30 am
SEA
- SDF
1 stop6h 45m
Southwest
Mon 12/77:30 pm
SDF
- SEA
1 stop7h 00m
Southwest
Deal found 7/26![Southwest logo]()
$358
This Delta deal was found by Cheapflights users on 7/27. 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 8/209:10 am
SEA
- SDF
1 stop10h 00m
Delta
Mon 8/247:54 pm
SDF
- SEA
1 stop7h 00m
Delta
Deal found 7/27![Delta logo]()
$363
This Southwest deal was found by Cheapflights users on 7/26. 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 9/57:35 am
SEA
- SDF
1 stop6h 55m
Southwest
Sun 9/67:10 pm
SDF
- SEA
1 stop6h 55m
Southwest
Deal found 7/26![Southwest logo]()
$364
This Southwest deal was found by Cheapflights users on 7/30. 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.
Wed 8/266:40 am
SEA
- SDF
2 stops10h 55m
Southwest
Mon 8/312:15 pm
SDF
- SEA
1 stop7h 05m
Southwest
Deal found 7/30![Southwest logo]()
$368
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:56 pm
SEA
- SDF
1 stop7h 39m
American Airlines
Thu 8/206:30 pm
SDF
- SEA
1 stop8h 05m
American Airlines
Deal found 7/28![American Airlines logo]()
$372
This Southwest deal was found by Cheapflights users on 7/26. 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 9/227:10 am
SEA
- SDF
2 stops10h 30m
Southwest
Wed 9/305:30 am
SDF
- SEA
2 stops10h 35m
Southwest
Deal found 7/26![Southwest logo]()
$373
This Southwest deal was found by Cheapflights users on 7/26. 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 9/289:05 am
SEA
- SDF
2 stops11h 05m
Southwest
Thu 10/13:35 pm
SDF
- SEA
1 stop12h 00m
Southwest
Deal found 7/26![Southwest logo]()
$374
This Southwest deal was found by Cheapflights users on 7/29. 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.
Wed 9/97:10 am
SEA
- SDF
2 stops10h 30m
Southwest
Sat 9/1212:05 pm
SDF
- SEA
2 stops12h 25m
Southwest
Deal found 7/29![Southwest logo]()
$379
This Southwest deal was found by Cheapflights users on 7/29. 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 10/208:25 pm
SEA
- SDF
2 stops10h 40m
Southwest
Sat 10/247:05 am
SDF
- SEA
2 stops10h 25m
Southwest
Deal found 7/29![Southwest logo]()
$387
This United Airlines deal was found by Cheapflights users on 7/25. 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 9/2311:00 pm
SEA
- SDF
1 stop7h 34m
United Airlines
Mon 9/282:12 pm
SDF
- SEA
1 stop9h 25m
United Airlines
Deal found 7/25![United Airlines logo]()
$388
This Delta deal was found by Cheapflights users on 7/26. 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 8/2411:59 pm
SEA
- SDF
1 stop7h 33m
Delta
Mon 8/318:05 am
SDF
- SEA
1 stop9h 40m
Delta
Deal found 7/26![Delta logo]()
$391
Best flights from Seattle to LouisvilleDiscover carefully curated flight deals from Seattle to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2026.
Discover carefully curated flight deals from Seattle to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2026.
This Delta deal was found by Cheapflights users on 7/28. 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 9/2111:59 pm
SEA
- SDF
1 stop7h 20m
Delta
Tue 9/294:29 pm
SDF
- SEA
1 stop7h 07m
Delta
Deal found 7/28![Delta logo]()
$363
This American Airlines deal was found by Cheapflights users on 7/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:40 am
SEA
- SDF
1 stop7h 53m
American Airlines
Mon 8/242:36 pm
SDF
- SEA
1 stop10h 23m
American Airlines
Deal found 7/25![American Airlines logo]()
$363
This Southwest deal was found by Cheapflights users on 7/29. 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 9/39:05 am
SEA
- SDF
2 stops11h 05m
Southwest
Tue 9/86:45 pm
SDF
- SEA
1 stop7h 55m
Southwest
Deal found 7/29![Southwest logo]()
$368
This United Airlines deal was found by Cheapflights users on 7/29. 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 9/1611:04 pm
SEA
- SDF
1 stop8h 14m
United Airlines
Mon 9/215:15 am
SDF
- SEA
1 stop7h 21m
United Airlines
Deal found 7/29![United Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 7/27. 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 9/2411:59 pm
SEA
- SDF
1 stop9h 21m
Delta
Tue 9/293:43 pm
SDF
- SEA
1 stop8h 32m
Delta
Deal found 7/27![Delta logo]()
$363
This Southwest deal was found by Cheapflights users on 7/25. 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 9/225:20 am
SEA
- SDF
1 stop6h 55m
Southwest
Wed 9/307:05 am
SDF
- SEA
2 stops9h 15m
Southwest
Deal found 7/25![Southwest logo]()
$368
This Southwest deal was found by Cheapflights users on 7/29. 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 9/109:05 am
SEA
- SDF
2 stops11h 05m
Southwest
Mon 9/142:15 pm
SDF
- SEA
2 stops9h 35m
Southwest
Deal found 7/29![Southwest logo]()
$373
This United Airlines deal was found by Cheapflights users on 7/26. 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 8/2611:04 pm
SEA
- SDF
1 stop8h 14m
United Airlines
Mon 8/318:00 am
SDF
- SEA
1 stop6h 44m
United Airlines
Deal found 7/26![United Airlines logo]()
$463
This Southwest deal was found by Cheapflights users on 7/26. 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 8/219:10 am
SEA
- SDF
2 stops10h 55m
Southwest
Mon 8/247:10 pm
SDF
- SEA
1 stop7h 45m
Southwest
Deal found 7/26![Southwest logo]()
$401
Last-minute flights from Seattle to LouisvilleDiscover last-minute flight deals from Seattle to Louisville. Data last updated July 30, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Louisville. Data last updated July 30, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:56 pm
SEA
- SDF
1 stop7h 39m
American Airlines
Thu 8/206:30 pm
SDF
- SEA
1 stop8h 05m
American Airlines
Deal found 7/28![American Airlines logo]()
$372
This Southwest deal was found by Cheapflights users on 7/29. 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.
Wed 8/1912:55 pm
SEA
- SDF
1 stop6h 35m
Southwest
Fri 8/217:10 pm
SDF
- SEA
1 stop7h 45m
Southwest
Deal found 7/29![Southwest logo]()
$396
This Delta deal was found by Cheapflights users on 7/27. 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 8/209:10 am
SEA
- SDF
1 stop10h 00m
Delta
Mon 8/247:54 pm
SDF
- SEA
1 stop7h 00m
Delta
Deal found 7/27![Delta logo]()
$363
This Southwest deal was found by Cheapflights users on 7/28. 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 8/206:15 am
SEA
- SDF
1 stop13h 50m
Southwest
Mon 8/243:20 pm
SDF
- SEA
2 stops10h 35m
Southwest
Deal found 7/28![Southwest logo]()
$407
This Delta deal was found by Cheapflights users on 7/26. 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 8/2411:59 pm
SEA
- SDF
1 stop7h 33m
Delta
Mon 8/318:05 am
SDF
- SEA
1 stop9h 40m
Delta
Deal found 7/26![Delta logo]()
$391
This Delta deal was found by Cheapflights users on 7/26. 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 8/2411:59 pm
SEA
- SDF
1 stop9h 22m
Delta
Sun 8/307:54 pm
SDF
- SEA
1 stop7h 00m
Delta
Deal found 7/26![Delta logo]()
$415
This Delta deal was found by Cheapflights users on 7/26. 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 8/242:50 pm
SEA
- SDF
2 stops16h 42m
Delta
Wed 9/26:50 am
SDF
- SEA
1 stop9h 10m
Delta
Deal found 7/26![Delta logo]()
$439
This Southwest deal was found by Cheapflights users on 7/26. 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 8/256:40 am
SEA
- SDF
2 stops10h 55m
Southwest
Tue 9/18:15 am
SDF
- SEA
2 stops9h 45m
Southwest
Deal found 7/26![Southwest logo]()
$373
This Delta deal was found by Cheapflights users on 7/26. 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 8/251:30 pm
SEA
- SDF
1 stop8h 04m
Delta
Mon 8/317:05 am
SDF
- SEA
1 stop10h 40m
Delta
Deal found 7/26![Delta logo]()
$419
This Southwest deal was found by Cheapflights users on 7/30. 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.
Wed 8/266:40 am
SEA
- SDF
2 stops10h 55m
Southwest
Mon 8/312:15 pm
SDF
- SEA
1 stop7h 05m
Southwest
Deal found 7/30![Southwest logo]()
$368
This Southwest deal was found by Cheapflights users on 7/27. 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.
Wed 8/267:10 am
SEA
- SDF
2 stops10h 25m
Southwest
Wed 9/211:50 am
SDF
- SEA
2 stops11h 25m
Southwest
Deal found 7/27![Southwest logo]()
$387
One-way flights from Seattle to LouisvilleSearch for one-way flight options from Seattle to Louisville. Find affordable one-way fares based on user searches. Data last updated July 30, 2026.
Search for one-way flight options from Seattle to Louisville. Find affordable one-way fares based on user searches. Data last updated July 30, 2026.
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Mon 8/315:00 am
SEA
- SDF
1 stop6h 29m
United Airlines
Deal found 7/28![United Airlines logo]()
$182
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:40 am
SEA
- SDF
1 stop7h 34m
American Airlines
Deal found 7/26![American Airlines logo]()
$183
This Southwest deal was found by Cheapflights users on 7/30. 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 10/18:40 pm
SEA
- SDF
2 stops10h 30m
Southwest
Deal found 7/30![Southwest logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/319:29 pm
SEA
- SDF
3 stops37h 47m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$227
This United Airlines deal was found by Cheapflights users on 7/30. 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 9/1911:00 pm
SEA
- SDF
1 stop7h 34m
United Airlines
Deal found 7/30![United Airlines logo]()
$232
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2011:57 pm
SEA
- SDF
1 stop6h 46m
American Airlines
Deal found 7/30![American Airlines logo]()
$234
This United Airlines deal was found by Cheapflights users on 7/29. 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 9/236:52 pm
SEA
- SDF
2 stops11h 42m
United Airlines
Deal found 7/29![United Airlines logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 11/29:16 pm
SEA
- SDF
3 stops39h 10m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 7/30. 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.
Sun 9/205:50 am
SEA
- SDF
2 stops16h 15m
Southwest
Deal found 7/30![Southwest logo]()
$245
Find flight deals from Seattle to Louisville
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Louisville (SDF). 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 July 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $358 (Southwest) |
One-way from | $182 (United Airlines) |
Popular in | April |
Cheapest in | January |
Average price | $576 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Louisville 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 2,558,603 searches. Data last updated July 30, 2026.
Use the filters below to find and compare flights from Seattle to Louisville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
SeattleLouisville
SEA - SDF
SEASDF
Seattle/Tacoma Intl
Mon 9/21
11:59 pm-10:19 am
1 stop7h 20m
Louisville Intl
Tue 9/29
4:29 pm-8:36 pm
1 stop7h 07m
$363
SeattleLouisville
SEA - SDF
SEASDF
Seattle/Tacoma Intl
Thu 8/20
7:40 am-6:33 pm
1 stop7h 53m
Louisville Intl
Mon 8/24
2:36 pm-9:59 pm
1 stop10h 23m
$363
SeattleLouisville
SEA - SDF
SEASDF
Seattle/Tacoma Intl
Thu 9/24
11:59 pm-12:20 pm
1 stop9h 21m
Louisville Intl
Tue 9/29
3:43 pm-9:15 pm
1 stop8h 32m
$363
SeattleLouisville
SEA - SDF
SEASDF
Seattle/Tacoma Intl
Thu 9/3
9:05 am-11:10 pm
2 stops11h 05m
Louisville Intl
Tue 9/8
6:45 pm-11:40 pm
1 stop7h 55m
$368
SeattleLouisville
SEA - SDF
SEASDF
Seattle/Tacoma Intl
Tue 9/22
5:20 am-3:15 pm
1 stop6h 55m
Louisville Intl
Wed 9/30
7:05 am-1:20 pm
2 stops9h 15m
$368
SeattleLouisville
SEA - SDF
SEASDF
Seattle/Tacoma Intl
Thu 9/10
9:05 am-11:10 pm
2 stops11h 05m
Louisville Intl
Mon 9/14
2:15 pm-8:50 pm
2 stops9h 35m
$373
SeattleLouisville
SEA - SDF
SEASDF
Seattle/Tacoma Intl
Fri 8/21
9:10 am-11:05 pm
2 stops10h 55m
Louisville Intl
Mon 8/24
7:10 pm-11:55 pm
1 stop7h 45m
$401
SeattleLouisville
SEA - SDF
SEASDF
Seattle/Tacoma Intl
Wed 9/16
11:04 pm-10:18 am
1 stop8h 14m
Louisville Intl
Mon 9/21
5:15 am-9:36 am
1 stop7h 21m
$424
SeattleLouisville
SEA - SDF
SEASDF
Seattle/Tacoma Intl
Wed 8/26
11:04 pm-10:18 am
1 stop8h 14m
Louisville Intl
Mon 8/31
8:00 am-11:44 am
1 stop6h 44m
$463
Cheapest one-way
SeattleLouisville
SEA - SDF
SEASDF
Seattle/Tacoma Intl
Mon 8/24
11:59 pm-1:07 pm
1 stop10h 08m
$182
Showing 1-10 of 18 resultsSorted by cheapest first
Compare providers for flights from Seattle to Louisville
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 Seattle to Louisville in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Louisville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Louisville 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 Seattle-Louisville 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 Seattle to Louisville
Have a flexible travel schedule? Discover the best time to fly to Louisville from Seattle with our price prediction graph.
SEA-SDF
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 Seattle to Louisville
Prices
More
How far ahead should I book a flight from Seattle to Louisville?
The price you pay for your flight from Seattle to Louisville may vary depending on when you book. For the best chance of a lower fare, look to book 52 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Louisville?
Currently, January is the cheapest month in which you can book a flight from Seattle to Louisville (average of $338). Flying from Seattle to Louisville in April is currently the most expensive (average of $596). 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 Seattle to Louisville?
Airfare is typical for this route at the moment.
Seattle to Louisville flights typically cost between $352 and $481 in December.The cheapest round-trip price found within the last 5 days was $358 on Southwest (Dec 5-Dec 7).
What’s the top layover airport for flights from Seattle to Louisville?
Share of 1-stop round-trip flights from Seattle to Louisville chosen by Cheapflights users in the past 12 months, using the same layover each way.
Chicago (MDW) – chosen by Cheapflights users on 67% of 1-stop itineraries from Seattle to Louisville on Cheapflights.
What’s the cheapest layover airport for flights from Seattle to Louisville?
Average round-trip fare for 1-stop flights from Seattle to Louisville, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Chicago (MDW) is the most affordable 1-stop option, with an average round-trip price of $483.
What’s the fastest layover option from Seattle to Louisville?
Shortest average travel time for 1-stop one-way flights from Seattle to Louisville, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Chicago (MDW) have the shortest average one-way travel time for 1-stop routes: 6h 55m.
Which airport typically offers the quickest layover for flights from Seattle to Louisville?
Average layover duration for 1-stop one-way flights from Seattle to Louisville, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 0h 59m.
Reviews of airlines servicing Louisville
Get insights into the airlines that provide service to Louisville. 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 Louisville. Reviews last updated July 30, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andDelta from Seattle to Louisville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Seattle to Louisville. 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 Louisville?
Book flights to Louisville if you plan to visit one of these locationsCorydon
Shepherdsville
Elizabethtown
Jeffersonville
Bardstown
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Explore flights to Louisville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 30, 2026.
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Top 5 airlines flying from Seattle to Louisville
Discover the top 5 airlines that operate flights from Seattle to Louisville. 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 2,558,603 searches. Data last updated July 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$194 | Average$530 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$283 | Average$448 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$298 | Average$483 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$332 | Average$497 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$491 | Average$661 | FlexibilityNo cancel fee | On-time75% |