$182+ Cheap flights from Seattle to Louisville (SEA - SDF)
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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SDF
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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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
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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 Seattle to Louisville
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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 September 10, 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 September 10, 2026.
This Southwest deal was found by Cheapflights users on 9/7. 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 -
1 stop6h 45m
Tue 12/84:15 pm -
1 stop9h 00m
Deal found 9/7![Southwest logo]()
$358
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/1411:59 pm -
1 stop6h 33m
Wed 10/217:27 pm -
1 stop7h 43m
Deal found 9/10![American Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/711:13 pm -
1 stop7h 21m
Wed 10/148:00 am -
2 stops9h 17m
Deal found 9/9![United Airlines logo]()
$368
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/66:15 am -
1 stop10h 13m
Mon 10/123:36 pm -
1 stop10h 34m
Deal found 9/9![American Airlines logo]()
$376
This American Airlines deal was found by Cheapflights users on 9/8. 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.
Fri 10/911:59 pm -
1 stop6h 33m
Thu 10/155:19 pm -
1 stop10h 17m
Deal found 9/8![American Airlines logo]()
$381
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/1511:59 pm -
1 stop6h 33m
Mon 10/196:00 am -
1 stop8h 14m
Deal found 9/9![American Airlines logo]()
$383
This Southwest deal was found by Cheapflights users on 9/9. 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 10/158:40 pm -
2 stops10h 30m
Mon 10/197:50 pm -
1 stop7h 50m
Deal found 9/9![Southwest logo]()
$401
This Southwest deal was found by Cheapflights users on 9/9. 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 10/218:25 pm -
2 stops10h 45m
Tue 10/273:00 pm -
2 stops10h 40m
Deal found 9/9![Southwest logo]()
$406
This American Airlines deal was found by Cheapflights users on 9/9. 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 12/1711:48 pm -
1 stop8h 16m
Tue 12/226:47 pm -
1 stop8h 00m
Deal found 9/9![American Airlines logo]()
$407
This American Airlines deal was found by Cheapflights users on 9/10. 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 12/102:07 pm -
1 stop6h 52m
Sun 12/1310:53 am -
1 stop9h 01m
Deal found 9/10![American Airlines logo]()
$415
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 September 10, 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 September 10, 2026.
This Southwest deal was found by Cheapflights users on 9/9. 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 10/228:40 pm -
2 stops10h 30m
Mon 10/267:50 pm -
1 stop7h 50m
Deal found 9/9![Southwest logo]()
$368
This Delta deal was found by Cheapflights users on 9/6. 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 11/311:50 pm -
1 stop9h 07m
Mon 11/93:14 pm -
1 stop9h 44m
Deal found 9/6![Delta logo]()
$449
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/145:05 am -
1 stop6h 17m
Tue 11/179:17 am -
2 stops12h 09m
Deal found 9/9![United Airlines logo]()
$468
This Southwest deal was found by Cheapflights users on 9/9. 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 10/218:25 pm -
2 stops10h 45m
Tue 10/273:00 pm -
2 stops10h 40m
Deal found 9/9![Southwest logo]()
$406
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/207:25 pm -
2 stops11h 09m
Sat 10/246:16 pm -
1 stop7h 40m
Deal found 9/9![United Airlines logo]()
$468
This Southwest deal was found by Cheapflights users on 9/9. 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 12/1710:45 am -
1 stop9h 55m
Tue 12/2210:40 am -
2 stops10h 55m
Deal found 9/9![Southwest logo]()
$451
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/47:00 am -
1 stop9h 11m
Sun 10/115:15 am -
1 stop7h 23m
Deal found 9/6![United Airlines logo]()
$517
This Southwest deal was found by Cheapflights users on 9/8. 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 11/2312:15 am -
1 stop6h 45m
Fri 11/275:35 pm -
2 stops10h 40m
Deal found 9/8![Southwest logo]()
$472
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 12/106:15 am -
2 stops14h 34m
Sun 12/137:00 am -
2 stops14h 09m
Deal found 9/10![United Airlines logo]()
$525
Last-minute flights from Seattle to LouisvilleDiscover last-minute flight deals from Seattle to Louisville. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Louisville. Data last updated September 10, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/7. 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 10/59:59 pm -
1 stop9h 00m
Tue 10/61:59 pm -
1 stop8h 05m
Deal found 9/7![Delta logo]()
$423
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/66:15 am -
1 stop10h 13m
Mon 10/123:36 pm -
1 stop10h 34m
Deal found 9/9![American Airlines logo]()
$376
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/711:13 pm -
1 stop7h 21m
Wed 10/148:00 am -
2 stops9h 17m
Deal found 9/9![United Airlines logo]()
$368
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/711:13 pm -
1 stop7h 21m
Sun 10/115:15 am -
1 stop7h 23m
Deal found 9/8![United Airlines logo]()
$425
This American Airlines deal was found by Cheapflights users on 9/8. 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.
Fri 10/911:59 pm -
1 stop6h 33m
Thu 10/155:19 pm -
1 stop10h 17m
Deal found 9/8![American Airlines logo]()
$381
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/1411:59 pm -
1 stop6h 33m
Wed 10/217:27 pm -
1 stop7h 43m
Deal found 9/10![American Airlines logo]()
$363
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/1511:59 pm -
1 stop6h 33m
Mon 10/196:00 am -
1 stop8h 14m
Deal found 9/9![American Airlines logo]()
$383
This Southwest deal was found by Cheapflights users on 9/9. 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 10/158:40 pm -
2 stops10h 30m
Mon 10/197:50 pm -
1 stop7h 50m
Deal found 9/9![Southwest logo]()
$401
This Southwest deal was found by Cheapflights users on 9/9. 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 10/218:25 pm -
2 stops10h 45m
Tue 10/273:00 pm -
2 stops10h 40m
Deal found 9/9![Southwest logo]()
$406
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/221:25 pm -
1 stop7h 43m
Sun 10/255:35 pm -
1 stop10h 01m
Deal found 9/9![American Airlines logo]()
$415
This Southwest deal was found by Cheapflights users on 9/9. 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 10/228:40 pm -
2 stops10h 30m
Sun 10/258:25 pm -
1 stop7h 30m
Deal found 9/9![Southwest logo]()
$420
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 September 10, 2026.
Search for one-way flight options from Seattle to Louisville. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Southwest deal was found by Cheapflights users on 9/7. 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 10/2812:10 am -
1 stop7h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Southwest logo]()
$182
This Delta deal was found by Cheapflights users on 9/9. 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 10/22:30 pm -
1 stop6h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$195
This Southwest deal was found by Cheapflights users on 9/9. 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 10/28:40 pm -
2 stops10h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Southwest logo]()
$200
This American Airlines deal was found by Cheapflights users on 9/6. 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 10/135:00 am -
1 stop7h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![American Airlines logo]()
$215
This Delta deal was found by Cheapflights users on 9/9. 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 10/111:35 am -
1 stop7h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$220
This Southwest deal was found by Cheapflights users on 9/6. 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 10/138:25 pm -
2 stops10h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Southwest logo]()
$230
This American Airlines deal was found by Cheapflights users on 9/6. 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 12/1311:34 pm -
1 stop7h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![American Airlines logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 12/138:55 pm -
2 stops19h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$236
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Thu 10/16:43 pm -
2 stops11h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 10/299:13 pm -
3 stops33h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines 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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $358 (Southwest) |
One-way from | $182 (Southwest) |
Popular in | April |
Cheapest in | January |
Average price | $440 |
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 7,457,451 searches. Data last updated September 10, 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
SeattleLouisville
SEA Seattle/Tacoma Intl - SDF Louisville Intl
SEASDF
Seattle/Tacoma Intl
Mon 10/12
11:50 pm-11:57 am
1 stop9h 07m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$182
SeattleLouisville
SEA Seattle/Tacoma Intl - SDF Louisville Intl
SEASDF
Seattle/Tacoma Intl
Thu 10/29
8:40 pm-10:10 am
2 stops10h 30m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$187
Quickest round-trip
SeattleLouisville
SEA Seattle/Tacoma Intl - SDF Louisville Intl
SEASDF
Seattle/Tacoma Intl
Sat 12/12
6:00 am-4:54 pm
1 stop7h 54m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$215
SeattleLouisville
SEA Seattle/Tacoma Intl - SDF Louisville Intl
SEASDF
Seattle/Tacoma Intl
Mon 10/26
8:40 pm-10:05 am
2 stops10h 25m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$220
SeattleLouisville
SEA Seattle/Tacoma Intl - SDF Louisville Intl
SEASDF
Seattle/Tacoma Intl
Tue 10/13
8:25 pm-10:05 am
2 stops10h 40m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$230
SeattleLouisville
SEA Seattle/Tacoma Intl - SDF Louisville Intl
SEASDF
Seattle/Tacoma Intl
Mon 10/26
4:27 pm-10:11 am
3 stops38h 44m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$237
SeattleLouisville
SEA Seattle/Tacoma Intl - SDF Louisville Intl
SEASDF
Seattle/Tacoma Intl
Wed 10/14
6:15 am-8:15 pm
2 stops11h 00m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$269
SeattleLouisville
SEA Seattle/Tacoma Intl - SDF Louisville Intl
SEASDF
Seattle/Tacoma Intl
Tue 12/15
6:15 am-11:49 pm
2 stops14h 34m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$270
SeattleLouisville
SEA Seattle/Tacoma Intl - SDF Louisville Intl
SEASDF
Seattle/Tacoma Intl
Sat 12/12
5:05 am-9:02 pm
2 stops12h 57m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$270
SeattleLouisville
SEA Seattle/Tacoma Intl - SDF Louisville Intl
SEASDF
Seattle/Tacoma Intl
Mon 10/12
9:16 pm-8:31 pm
3 stops44h 15m
Louisville Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$277
Showing 1-10 of 20 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 September.
| 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 below average for this route at the moment.
Seattle to Louisville flights typically cost between $389 and $536 in December.The cheapest round-trip price found within the last 5 days was $358 on Southwest (Dec 5-Dec 8).
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 September 10, 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.
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
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 locationsShepherdsville
Elizabethtown
Jeffersonville
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Other flights to Louisville
Explore flights to Louisville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
Seattle and Louisville flights
Browse other Seattle and Louisville flight options. Last updated on September 10, 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 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$242 | Average$523 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$278 | Average$454 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$298 | Average$478 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$339 | Average$536 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$491 | Average$661 | FlexibilityNo cancel fee | On-time75% |