$164+ Cheap flights from Louisville to Seattle (SDF - SEA)
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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SEA
May 2 — May 91
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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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 April 2, 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 April 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
Sat 5/309:21 am
SDF
- SEA
1 stop12h 14m
Multiple Airlines
Fri 6/511:21 am
SEA
- SDF
1 stop29h 05m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 3/30. 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 4/297:15 pm
SDF
- SEA
1 stop7h 55m
Southwest
Wed 5/611:45 pm
SEA
- SDF
1 stop7h 10m
Southwest
Deal found 3/30![Southwest logo]()
$375
This Southwest deal was found by Cheapflights users on 3/31. 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 4/284:40 pm
SDF
- SEA
2 stops10h 30m
Southwest
Tue 5/58:25 am
SEA
- SDF
1 stop7h 10m
Southwest
Deal found 3/31![Southwest logo]()
$380
This Southwest deal was found by Cheapflights users on 3/30. 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 4/227:15 pm
SDF
- SEA
1 stop7h 55m
Southwest
Sat 4/2511:55 pm
SEA
- SDF
1 stop6h 50m
Southwest
Deal found 3/30![Southwest logo]()
$381
This American Airlines deal was found by Cheapflights users on 3/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:00 am
SDF
- SEA
1 stop7h 14m
American Airlines
Sat 5/211:55 pm
SEA
- SDF
1 stop7h 16m
American Airlines
Deal found 3/29![American Airlines logo]()
$384
This Delta deal was found by Cheapflights users on 3/31. 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.
Wed 6/37:49 pm
SDF
- SEA
1 stop6h 54m
Delta
Mon 6/811:59 pm
SEA
- SDF
1 stop8h 58m
Delta
Deal found 3/31![Delta logo]()
$387
This American Airlines deal was found by Cheapflights users on 4/1. 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 6/231:21 pm
SDF
- SEA
1 stop8h 48m
American Airlines
Wed 6/2410:23 am
SEA
- SDF
1 stop9h 56m
American Airlines
Deal found 4/1![American Airlines logo]()
$389
This American Airlines deal was found by Cheapflights users on 4/1. 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 5/267:45 pm
SDF
- SEA
1 stop8h 14m
American Airlines
Mon 6/111:58 pm
SEA
- SDF
1 stop7h 19m
American Airlines
Deal found 4/1![American Airlines logo]()
$390
This Southwest deal was found by Cheapflights users on 3/30. 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.
Tue 4/284:40 pm
SDF
- SEA
2 stops10h 30m
Southwest
Sat 5/28:30 am
SEA
- SDF
2 stops9h 20m
Southwest
Deal found 3/30![Southwest logo]()
$391
This United Airlines deal was found by Cheapflights users on 3/30. 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 4/253:36 pm
SDF
- SEA
2 stops10h 51m
United Airlines
Sat 5/95:02 am
SEA
- SDF
1 stop6h 39m
United Airlines
Deal found 3/30![United Airlines logo]()
$392
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 April 2, 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 April 2, 2026.
This Southwest deal was found by Cheapflights users on 3/28. 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.
Mon 8/38:05 pm
SDF
- SEA
1 stop7h 20m
Southwest
Tue 8/117:10 am
SEA
- SDF
1 stop7h 45m
Southwest
Deal found 3/28![Southwest logo]()
$457
This Delta deal was found by Cheapflights users on 4/1. 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 7/237:49 pm
SDF
- SEA
1 stop7h 09m
Delta
Wed 8/55:20 am
SEA
- SDF
1 stop8h 27m
Delta
Deal found 4/1![Delta logo]()
$457
This United Airlines deal was found by Cheapflights users on 3/31. 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 7/227:55 pm
SDF
- SEA
1 stop7h 19m
United Airlines
Wed 7/2911:52 pm
SEA
- SDF
1 stop6h 13m
United Airlines
Deal found 3/31![United Airlines logo]()
$457
This Delta deal was found by Cheapflights users on 3/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:15 pm
SDF
- SEA
1 stop9h 14m
Delta
Tue 9/811:53 pm
SEA
- SDF
1 stop9h 10m
Delta
Deal found 3/29![Delta logo]()
$457
This Southwest deal was found by Cheapflights users on 3/29. 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 8/512:10 pm
SDF
- SEA
1 stop9h 00m
Southwest
Fri 8/146:15 am
SEA
- SDF
2 stops12h 40m
Southwest
Deal found 3/29![Southwest logo]()
$462
This United Airlines deal was found by Cheapflights users on 3/31. 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 4/295:00 am
SDF
- SEA
2 stops12h 46m
United Airlines
Wed 5/610:53 pm
SEA
- SDF
1 stop7h 32m
United Airlines
Deal found 3/31![United Airlines logo]()
$480
This Delta deal was found by Cheapflights users on 4/1. 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 7/247:49 pm
SDF
- SEA
1 stop7h 09m
Delta
Tue 8/45:20 am
SEA
- SDF
1 stop8h 27m
Delta
Deal found 4/1![Delta logo]()
$457
This Southwest deal was found by Cheapflights users on 4/2. 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 4/235:25 pm
SDF
- SEA
2 stops10h 30m
Southwest
Tue 4/286:50 am
SEA
- SDF
2 stops10h 45m
Southwest
Deal found 4/2![Southwest logo]()
$467
This Delta deal was found by Cheapflights users on 3/28. 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.
Fri 6/55:52 pm
SDF
- SEA
1 stop7h 54m
Delta
Sun 6/711:10 pm
SEA
- SDF
1 stop7h 45m
Delta
Deal found 3/28![Delta logo]()
$457
This Southwest deal was found by Cheapflights users on 3/31. 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 7/2210:55 am
SDF
- SEA
2 stops15h 35m
Southwest
Wed 7/296:30 am
SEA
- SDF
1 stop9h 40m
Southwest
Deal found 3/31![Southwest logo]()
$468
This Delta deal was found by Cheapflights users on 4/1. 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.
Wed 7/227:49 pm
SDF
- SEA
1 stop7h 09m
Delta
Wed 8/55:20 am
SEA
- SDF
1 stop8h 27m
Delta
Deal found 4/1![Delta logo]()
$457
This Southwest deal was found by Cheapflights users on 4/2. 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 4/235:25 pm
SDF
- SEA
2 stops9h 05m
Southwest
Mon 4/279:00 pm
SEA
- SDF
2 stops9h 50m
Southwest
Deal found 4/2![Southwest logo]()
$479
Last-minute flights from Louisville to SeattleDiscover last-minute flight deals from Louisville to Seattle. Data last updated April 2, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Seattle. Data last updated April 2, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 3/30. 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 4/227:15 pm
SDF
- SEA
1 stop7h 55m
Southwest
Sat 4/2511:55 pm
SEA
- SDF
1 stop6h 50m
Southwest
Deal found 3/30![Southwest logo]()
$381
This American Airlines deal was found by Cheapflights users on 3/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:00 am
SDF
- SEA
1 stop7h 14m
American Airlines
Sat 5/211:55 pm
SEA
- SDF
1 stop7h 16m
American Airlines
Deal found 3/29![American Airlines logo]()
$384
This Southwest deal was found by Cheapflights users on 3/30. 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.
Sat 4/251:45 pm
SDF
- SEA
1 stop7h 30m
Southwest
Sat 5/911:55 pm
SEA
- SDF
1 stop6h 50m
Southwest
Deal found 3/30![Southwest logo]()
$387
This United Airlines deal was found by Cheapflights users on 3/30. 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 4/253:36 pm
SDF
- SEA
2 stops10h 51m
United Airlines
Sat 5/95:02 am
SEA
- SDF
1 stop6h 39m
United Airlines
Deal found 3/30![United Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 3/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:35 pm
SDF
- SEA
1 stop7h 10m
Delta
Mon 4/279:45 pm
SEA
- SDF
1 stop8h 07m
Delta
Deal found 3/29![Delta logo]()
$393
This Southwest deal was found by Cheapflights users on 3/30. 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.
Tue 4/284:40 pm
SDF
- SEA
2 stops10h 30m
Southwest
Wed 5/1311:45 pm
SEA
- SDF
1 stop7h 10m
Southwest
Deal found 3/30![Southwest logo]()
$380
This Southwest deal was found by Cheapflights users on 3/31. 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 4/283:30 pm
SDF
- SEA
2 stops10h 00m
Southwest
Tue 5/56:50 am
SEA
- SDF
2 stops10h 45m
Southwest
Deal found 3/31![Southwest logo]()
$385
This Southwest deal was found by Cheapflights users on 3/30. 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.
Tue 4/284:40 pm
SDF
- SEA
2 stops10h 30m
Southwest
Sat 5/28:30 am
SEA
- SDF
2 stops9h 20m
Southwest
Deal found 3/30![Southwest logo]()
$391
This Southwest deal was found by Cheapflights users on 3/30. 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 4/297:15 pm
SDF
- SEA
1 stop7h 55m
Southwest
Wed 5/1311:45 pm
SEA
- SDF
1 stop7h 10m
Southwest
Deal found 3/30![Southwest logo]()
$375
This American Airlines deal was found by Cheapflights users on 4/1. 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 5/267:45 pm
SDF
- SEA
1 stop8h 14m
American Airlines
Mon 6/111:58 pm
SEA
- SDF
1 stop7h 19m
American Airlines
Deal found 4/1![American Airlines logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
Sat 5/309:21 am
SDF
- SEA
1 stop12h 14m
Multiple Airlines
Fri 6/511:21 am
SEA
- SDF
1 stop29h 05m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$369
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 April 2, 2026.
Search for one-way flight options from Louisville to Seattle. Find affordable one-way fares based on user searches. Data last updated April 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/139:21 am
SDF
- SEA
1 stop12h 14m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
Sat 5/99:21 am
SDF
- SEA
1 stop11h 16m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 4/1. 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.
Fri 4/247:48 pm
SDF
- SEA
3 stops24h 54m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 4/1. 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 4/206:06 pm
SDF
- SEA
3 stops50h 36m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 4/1. 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 4/239:14 pm
SDF
- SEA
2 stops39h 13m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$187
This American Airlines deal was found by Cheapflights users on 3/31. 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 6/247:45 pm
SDF
- SEA
1 stop8h 14m
American Airlines
Deal found 3/31![American Airlines logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 4/1. 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 4/199:12 pm
SDF
- SEA
3 stops39h 15m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$191
This United Airlines deal was found by Cheapflights users on 4/1. 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 9/23:25 pm
SDF
- SEA
2 stops10h 59m
United Airlines
Deal found 4/1![United Airlines logo]()
$193
This Delta deal was found by Cheapflights users on 4/1. 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 4/255:54 pm
SDF
- SEA
1 stop8h 02m
Delta
Deal found 4/1![Delta logo]()
$194
This United Airlines deal was found by Cheapflights users on 3/31. 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 5/96:00 am
SDF
- SEA
2 stops11h 36m
United Airlines
Deal found 3/31![United Airlines logo]()
$199
This American Airlines deal was found by Cheapflights users on 3/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:33 am
SDF
- SEA
1 stop8h 00m
American Airlines
Deal found 3/29![American Airlines logo]()
$200
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 April 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $369 (Kiwi.com) |
One-way from | $164 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $473 |
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 2,558,603 searches. Data last updated April 2, 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 - SEA
SDFSEA
Louisville Intl
Mon 8/3
8:05 pm-12:25 am
1 stop7h 20m
Seattle/Tacoma Intl
Tue 8/11
7:10 am-5:55 pm
1 stop7h 45m
$457
LouisvilleSeattle
SDF - SEA
SDFSEA
Louisville Intl
Thu 7/23
7:49 pm-11:58 pm
1 stop7h 09m
Seattle/Tacoma Intl
Wed 8/5
5:20 am-4:47 pm
1 stop8h 27m
$457
Quickest round-trip
LouisvilleSeattle
SDF - SEA
SDFSEA
Louisville Intl
Wed 7/22
7:55 pm-12:14 am
1 stop7h 19m
Seattle/Tacoma Intl
Wed 7/29
11:52 pm-9:05 am
1 stop6h 13m
$457
LouisvilleSeattle
SDF - SEA
SDFSEA
Louisville Intl
Tue 9/1
2:15 pm-8:29 pm
1 stop9h 14m
Seattle/Tacoma Intl
Tue 9/8
11:53 pm-12:03 pm
1 stop9h 10m
$457
LouisvilleSeattle
SDF - SEA
SDFSEA
Louisville Intl
Fri 7/24
7:49 pm-11:58 pm
1 stop7h 09m
Seattle/Tacoma Intl
Tue 8/4
5:20 am-4:47 pm
1 stop8h 27m
$457
LouisvilleSeattle
SDF - SEA
SDFSEA
Louisville Intl
Fri 6/5
5:52 pm-10:46 pm
1 stop7h 54m
Seattle/Tacoma Intl
Sun 6/7
11:10 pm-9:55 am
1 stop7h 45m
$457
LouisvilleSeattle
SDF - SEA
SDFSEA
Louisville Intl
Wed 7/22
7:49 pm-11:58 pm
1 stop7h 09m
Seattle/Tacoma Intl
Wed 8/5
5:20 am-4:47 pm
1 stop8h 27m
$457
LouisvilleSeattle
SDF - SEA
SDFSEA
Louisville Intl
Wed 8/5
12:10 pm-6:10 pm
1 stop9h 00m
Seattle/Tacoma Intl
Fri 8/14
6:15 am-9:55 pm
2 stops12h 40m
$462
LouisvilleSeattle
SDF - SEA
SDFSEA
Louisville Intl
Thu 4/23
5:25 pm-12:55 am
2 stops10h 30m
Seattle/Tacoma Intl
Tue 4/28
6:50 am-8:35 pm
2 stops10h 45m
$467
LouisvilleSeattle
SDF - SEA
SDFSEA
Louisville Intl
Wed 7/22
10:55 am-11:30 pm
2 stops15h 35m
Seattle/Tacoma Intl
Wed 7/29
6:30 am-7:10 pm
1 stop9h 40m
$468
Showing 1-10 of 23 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 April.
| 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 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
Prices
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How far ahead should I book a flight from Louisville to Seattle?
Use this chart to determine the optimal time to book a round-trip flight from Louisville to Seattle. Price data was last updated on April 2, 2026.
The best time to book flights from Louisville to Seattle is 89 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, December is the cheapest month in which you can book a flight from Louisville to Seattle (average of $118). Flying from Louisville to Seattle in July is currently the most expensive (average of $241). 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?
What’s the top layover airport for flights from Louisville to Seattle?
Share of 1-stop round-trip flights from Louisville to Seattle chosen by Cheapflights users in the past 12 months, using the same layover each way.
Chicago (ORD) – chosen by Cheapflights users on 60% of 1-stop itineraries from Louisville to Seattle on Cheapflights.
What’s the cheapest layover airport for flights from Louisville to Seattle?
Average round-trip fare for 1-stop flights from Louisville to Seattle, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Chicago (ORD) is the most affordable 1-stop option, with an average round-trip price of $299.
What’s the fastest layover option from Louisville to Seattle?
Shortest average travel time for 1-stop one-way flights from Louisville to Seattle, 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: 7h 13m.
Which airport typically offers the quickest layover for flights from Louisville to Seattle?
Average layover duration for 1-stop one-way flights from Louisville to Seattle, 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 57m.
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 April 2, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, 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.
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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
Tacoma
Ocean Shores
Olympia
Kent
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Tukwila
Renton
Puyallup
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Aberdeen
Browse thousands of different options on Cheapflights for your next trip
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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 April 2, 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 April 2, 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 April 2, 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 2,558,603 searches. Data last updated April 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$206 | Average$411 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$257 | Average$479 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$270 | Average$442 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$336 | Average$497 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$430 | Average$577 | FlexibilityNo cancel fee | On-time75% |