$175+ Cheap flights from Louisville to Seattle (SDF - SEA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SEA
Oct 7 — Oct 141
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 September 7, 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 September 7, 2026.
This American Airlines deal was found by Cheapflights users on 9/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:29 am -
1 stop7h 22m
Wed 9/3011:57 pm -
1 stop6h 46m
Deal found 9/2![American Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/175:15 am -
1 stop7h 21m
Sat 10/319:05 am -
2 stops10h 19m
Deal found 9/3![United Airlines logo]()
$368
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:05 am -
1 stop9h 27m
Fri 11/276:00 am -
1 stop7h 54m
Deal found 9/3![Delta logo]()
$377
This American Airlines deal was found by Cheapflights users on 9/3. 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 10/25:59 pm -
1 stop9h 12m
Sat 10/106:12 am -
1 stop7h 11m
Deal found 9/3![American Airlines logo]()
$379
This Southwest deal was found by Cheapflights users on 9/2. 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.
Sat 9/264:55 pm -
1 stop7h 00m
Mon 9/2811:05 pm -
2 stops10h 35m
Deal found 9/2![Southwest logo]()
$382
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Mon 10/126:00 pm -
1 stop8h 10m
Thu 10/156:00 am -
1 stop8h 20m
Deal found 9/3![American Airlines logo]()
$401
This Southwest deal was found by Cheapflights users on 9/3. 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 10/196:15 pm -
2 stops9h 25m
Thu 10/228:40 pm -
2 stops10h 30m
Deal found 9/3![Southwest logo]()
$406
This American Airlines deal was found by Cheapflights users on 9/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:19 pm -
1 stop8h 33m
Sun 10/1111:59 pm -
1 stop6h 33m
Deal found 9/2![American Airlines logo]()
$415
This Southwest deal was found by Cheapflights users on 9/2. 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 11/197:35 pm -
1 stop6h 55m
Sun 11/227:55 pm -
2 stops11h 10m
Deal found 9/2![Southwest logo]()
$420
This American Airlines deal was found by Cheapflights users on 9/3. 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 10/22:41 pm -
1 stop9h 55m
Sun 10/1111:59 pm -
1 stop6h 33m
Deal found 9/3![American Airlines logo]()
$429
This Southwest deal was found by Cheapflights users on 9/2. 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.
Sun 10/258:25 pm -
1 stop7h 30m
Thu 10/298:40 pm -
2 stops10h 30m
Deal found 9/2![Southwest logo]()
$430
This Southwest deal was found by Cheapflights users on 9/3. 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 10/127:50 pm -
1 stop7h 50m
Thu 10/158:40 pm -
2 stops10h 30m
Deal found 9/3![Southwest logo]()
$432
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 September 7, 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 September 7, 2026.
This Delta deal was found by Cheapflights users on 9/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:05 am -
1 stop9h 27m
Fri 11/276:00 am -
1 stop7h 54m
Deal found 9/2![Delta logo]()
$377
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/55:15 am -
1 stop9h 12m
Wed 10/711:13 pm -
1 stop7h 21m
Deal found 9/5![United Airlines logo]()
$429
This American Airlines deal was found by Cheapflights users on 9/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/95:04 am -
1 stop7h 54m
Sun 10/1111:59 pm -
1 stop6h 33m
Deal found 9/2![American Airlines logo]()
$429
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.
Thu 11/198:50 am -
2 stops10h 10m
Sun 11/225:30 am -
1 stop6h 35m
Deal found 9/6![Southwest logo]()
$453
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/206:55 pm -
1 stop8h 02m
Thu 11/2611:15 pm -
1 stop7h 54m
Deal found 9/3![Delta logo]()
$415
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/208:45 am -
1 stop7h 30m
Wed 11/2512:15 am -
2 stops9h 20m
Deal found 9/3![Southwest logo]()
$453
This United Airlines deal was found by Cheapflights users on 9/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2310:27 am -
2 stops14h 23m
Fri 11/277:00 am -
1 stop7h 02m
Deal found 9/2![United Airlines logo]()
$482
This Delta deal was found by Cheapflights users on 9/5. 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 10/191:59 pm -
1 stop8h 05m
Wed 10/216:00 am -
1 stop8h 18m
Deal found 9/5![Delta logo]()
$449
This Southwest deal was found by Cheapflights users on 9/3. 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 10/123:35 pm -
2 stops13h 05m
Thu 10/158:40 pm -
2 stops10h 30m
Deal found 9/3![Southwest logo]()
$506
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:25 pm -
1 stop11h 30m
Mon 10/126:43 pm -
2 stops11h 51m
Deal found 9/7![United Airlines logo]()
$534
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:35 pm -
2 stops10h 40m
Fri 11/276:45 am -
2 stops11h 15m
Deal found 9/3![Southwest logo]()
$518
Last-minute flights from Louisville to SeattleDiscover last-minute flight deals from Louisville to Seattle. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Seattle. Data last updated September 7, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:29 am -
1 stop7h 22m
Wed 9/3011:57 pm -
1 stop6h 46m
Deal found 9/2![American Airlines logo]()
$363
This Southwest deal was found by Cheapflights users on 9/2. 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.
Sat 9/264:55 pm -
1 stop7h 00m
Mon 9/2811:05 pm -
2 stops10h 35m
Deal found 9/2![Southwest logo]()
$382
This American Airlines deal was found by Cheapflights users on 9/3. 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 10/25:59 pm -
1 stop9h 12m
Sat 10/106:12 am -
1 stop7h 11m
Deal found 9/3![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 9/3. 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 10/22:41 pm -
1 stop9h 55m
Sun 10/1111:59 pm -
1 stop6h 33m
Deal found 9/3![American Airlines logo]()
$429
This American Airlines deal was found by Cheapflights users on 9/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:19 pm -
1 stop8h 33m
Sun 10/1111:59 pm -
1 stop6h 33m
Deal found 9/2![American Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 9/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:26 pm -
1 stop9h 37m
Mon 10/1210:35 pm -
1 stop7h 22m
Deal found 9/2![Delta logo]()
$377
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Mon 10/126:00 pm -
1 stop8h 10m
Thu 10/156:00 am -
1 stop8h 20m
Deal found 9/3![American Airlines logo]()
$401
This Southwest deal was found by Cheapflights users on 9/3. 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 10/127:50 pm -
1 stop7h 50m
Thu 10/158:40 pm -
2 stops10h 30m
Deal found 9/3![Southwest logo]()
$432
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/175:15 am -
1 stop7h 21m
Sat 10/319:05 am -
2 stops10h 19m
Deal found 9/3![United Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 9/3. 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 10/196:15 pm -
2 stops9h 25m
Thu 10/228:40 pm -
2 stops10h 30m
Deal found 9/3![Southwest logo]()
$406
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 10/216:25 am -
2 stops10h 10m
Tue 10/2712:10 am -
1 stop6h 55m
Deal found 9/7![Southwest logo]()
$434
This Southwest deal was found by Cheapflights users on 9/2. 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.
Sun 10/258:25 pm -
1 stop7h 30m
Thu 10/298:40 pm -
2 stops10h 30m
Deal found 9/2![Southwest logo]()
$430
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 September 7, 2026.
Search for one-way flight options from Louisville to Seattle. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
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.
Mon 11/212:24 pm -
3 stops53h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$175
This KAYAK deal was found by Cheapflights users on 9/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:00 am -
1 stop10h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Delta logo]()
$180
This Southwest deal was found by Cheapflights users on 9/4. 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 9/306:45 pm -
1 stop7h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Southwest logo]()
$182
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:20 pm -
1 stop7h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Southwest logo]()
$196
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.
Fri 10/211:39 am -
2 stops25h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$210
This American Airlines deal was found by Cheapflights users on 9/4. 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 10/76:00 pm -
1 stop8h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![American Airlines logo]()
$215
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/278:00 am -
2 stops11h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![United Airlines logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/19:09 pm -
2 stops44h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$221
This Delta deal was found by Cheapflights users on 9/5. 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 10/318:05 am -
1 stop8h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Delta logo]()
$225
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 September 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $363 (American Airlines) |
One-way from | $175 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $477 |
Cheapflights Fare Finder
Customize your flight search to find flights from Louisville to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 7, 2026.
Use the filters below to find and compare flights from Louisville to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Wed 9/30
6:45 pm-11:40 pm
1 stop7h 55m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$182
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Thu 10/15
6:00 am-11:14 am
1 stop8h 14m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$182
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Thu 10/1
7:50 pm-12:35 am
1 stop7h 45m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$182
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Thu 12/3
10:13 am-4:47 pm
1 stop9h 34m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$215
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Sat 10/10
2:12 pm-8:37 pm
1 stop9h 25m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$215
Quickest round-trip
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Sat 12/5
10:50 am-3:03 pm
1 stop7h 13m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$215
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Thu 10/8
4:18 pm-12:10 am
1 stop10h 52m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$215
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Tue 10/20
3:36 pm-9:15 pm
1 stop8h 39m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$215
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Mon 10/12
6:00 pm-11:10 pm
1 stop8h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$215
LouisvilleSeattle
SDF Louisville Intl - SEA Seattle/Tacoma Intl
SDFSEA
Louisville Intl
Thu 10/15
6:15 pm-12:40 am
2 stops9h 25m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$220
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Louisville-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Louisville-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Louisville-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Louisville-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Louisville to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Louisville with our price prediction graph.
SDF-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Louisville to Seattle
How far ahead should I book a flight from Louisville to Seattle?
The best time to book flights from Louisville to Seattle is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Louisville to Seattle?
Currently, January is the cheapest month in which you can book a flight from Louisville to Seattle (average of $299). Flying from Louisville to Seattle in June is currently the most expensive (average of $586). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Louisville to Seattle?
Airfare is below average for this route at the moment.
Louisville to Seattle flights typically cost between $377 and $617 in September.The cheapest round-trip price found within the last 5 days was $363 on American Airlines (Sep 23-Sep 30).
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 September 7, 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.
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Related info for your journey
Find useful and relevant information for your journey from Louisville to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Edmonds
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
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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 September 7, 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 September 7, 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 September 7, 2026.
Top 5 airlines flying from Louisville to Seattle
Discover the top 5 airlines that operate flights from Louisville to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$276 | Average$471 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$292 | Average$487 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$303 | Average$471 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$372 | Average$513 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$430 | Average$767 | FlexibilityNo cancel fee | On-time75% |