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$138+ Cheap flights from Louisville (SDF) to Washington

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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SEA
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap flight deals from Louisville to Washington

Cheapest flights from Louisville to Washington
Explore the most affordable flight options available from Louisville to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This Southwest deal was found by Cheapflights users on 12/21. 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 12/256:45 amSDF - SEA
1 stop9h 40mSouthwest
Wed 1/149:55 amSEA - SDF
1 stop8h 15mSouthwest
Deal found 12/21$723
This United Airlines deal was found by Cheapflights users on 12/21. 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 12/259:05 amSDF - SEA
2 stops12h 01mUnited Airlines
Wed 1/1410:58 amSEA - SDF
1 stop6h 30mUnited Airlines
Deal found 12/21$733
This Southwest deal was found by Cheapflights users on 12/21. 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 12/256:05 amSDF - GEG
1 stop6h 30mSouthwest
Wed 1/1412:10 pmGEG - SDF
1 stop6h 00mSouthwest
Deal found 12/21$753
This American Airlines deal was found by Cheapflights users on 12/21. 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 12/227:00 amSDF - SEA
1 stop13h 09mAmerican Airlines
Mon 12/295:23 amSEA - SDF
1 stop11h 19mAmerican Airlines
Deal found 12/21$899
This United Airlines deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:00 amSDF - SEA
1 stop8h 58mUnited Airlines
Fri 1/25:02 amSEA - SDF
1 stop6h 20mUnited Airlines
Deal found 12/21$982
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:27 amSDF - SEA
1 stop7h 20mAlaska Airlines
Sat 1/39:29 pmSEA - SDF
1 stop10h 19mAlaska Airlines
Deal found 12/22$987
This United Airlines deal was found by Cheapflights users on 12/21. 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 12/229:05 amSDF - SEA
2 stops12h 01mUnited Airlines
Mon 12/295:02 amSEA - SDF
1 stop6h 20mUnited Airlines
Deal found 12/21$988
This American Airlines deal was found by Cheapflights users on 12/21. 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 12/256:19 pmSDF - SEA
1 stop18h 07mAmerican Airlines
Sat 12/275:23 amSEA - SDF
1 stop13h 11mAmerican Airlines
Deal found 12/21$989
This Southwest deal was found by Cheapflights users on 12/22. 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 12/241:50 pmSDF - SEA
2 stops11h 40mSouthwest
Sat 1/37:55 amSEA - SDF
1 stop7h 00mSouthwest
Deal found 12/22$992
This United Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:18 pmSDF - SEA
2 stops12h 41mUnited Airlines
Sat 1/38:57 amSEA - SDF
2 stops10h 33mUnited Airlines
Deal found 12/22$997
This American Airlines deal was found by Cheapflights users on 12/22. 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 12/267:00 amSDF - SEA
1 stop15h 14mAmerican Airlines
Sun 12/285:23 amSEA - SDF
1 stop11h 19mAmerican Airlines
Deal found 12/22$1,012
This American Airlines deal was found by Cheapflights users on 12/22. 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 12/267:00 amSDF - PDX
1 stop17h 49mAmerican Airlines
Sat 12/2712:49 amPDX - SDF
1 stop13h 39mAmerican Airlines
Deal found 12/22$1,024

Find flight deals from Louisville to Washington

Keep the following information in mind while searching for Louisville to Washington flight deals. Data was last updated December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$298
(American Airlines)

One-way from

$138
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$477
Provider with most accurate pricing for Louisville Intl-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Seattle/Tacoma Intl flights.
Search Deals
From Louisville Intl to Washington
Search Deals
One-way flight from Louisville Intl to Washington
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Washington 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 December 23, 2025.
Use the filters below to find and compare flights from Louisville to Washington that are best for you.

Fly from

Louisville

Fly to

Washington

Route

Depart

Return

Price

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Sat 1/17

1:15 pm-7:04 pm

1 stop8h 49m

Seattle/Tacoma Intl

Sat 1/24

8:04 am-11:19 pm

1 stop12h 15m

$309

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Sat 1/17

6:23 am-12:46 pm

1 stop9h 23m

Portland

Wed 1/21

1:53 pm-11:06 pm

1 stop6h 13m

$311

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Wed 3/4

6:23 am-12:44 pm

1 stop9h 21m

Portland

Tue 3/10

10:30 pm-9:28 am

1 stop7h 58m

$321

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Sat 1/24

9:00 am-1:58 pm

1 stop7h 58m

Seattle/Tacoma Intl

Tue 2/3

9:00 am-10:30 pm

2 stops10h 30m

$334

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Sat 2/21

5:35 am-10:05 am

1 stop7h 30m

Portland

Tue 2/24

6:00 am-5:30 pm

1 stop8h 30m

$340

LouisvillePortland

SDF - PDX

SDFPDX

Louisville Intl

Sat 2/7

1:50 pm-9:49 pm

1 stop10h 59m

Portland

Wed 2/11

1:24 pm-10:24 pm

1 stop6h 00m

$340

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Sat 1/24

8:55 am-4:50 pm

2 stops10h 55m

Seattle/Tacoma Intl

Tue 2/3

8:45 am-10:10 pm

2 stops10h 25m

$369

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Sat 1/17

11:10 am-6:28 pm

2 stops10h 18m

Seattle/Tacoma Intl

Sat 1/24

8:40 am-8:28 pm

2 stops8h 48m

$369

LouisvilleSeattle

SDF - SEA

SDFSEA

Louisville Intl

Sat 2/14

5:35 am-11:49 am

1 stop9h 14m

Seattle/Tacoma Intl

Wed 2/18

12:55 pm-10:37 pm

1 stop6h 42m

$390

LouisvilleSpokane

SDF - GEG

SDFGEG

Louisville Intl

Sat 1/17

3:22 pm-9:22 pm

1 stop9h 00m

Spokane

Tue 1/20

5:00 am-2:26 pm

1 stop6h 26m

$391

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 35 results
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Best time to book a flight from Louisville to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Louisville with our price prediction graph.
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 Washington

What is the cheapest month to book a flight from Louisville to State of Washington?

Currently, September is the cheapest month in which you can book a flight from Louisville to State of Washington (average of $80). Flying from Louisville to State of Washington in July is currently the most expensive (average of $218). 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.

What is the cheapest time of day to fly from SDF to WA?

Find hourly flight availability from Louisville to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

It’s typically best to fly out from Louisville to State of Washington in the evening. Doing so could potentially save you 41% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Louisville to State of Washington?

Use this chart to determine the cheapest time to fly round-trip from Louisville to Washington. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Louisville to State of Washington flight should consider departing on Wednesday evenings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated December 23, 2025.
Read through reviews of airlines operating flights from Louisville to Washington, such as Alaska Airlines, Southwest, and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,512 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
8.0
Very good
11,512 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Southwest
8.0
Very good
4,253 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Delta
7.9
Good
8,014 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
United Airlines
7.4
Good
9,105 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
American Airlines
7.2
Good
11,054 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Louisville to Washington?

    Located just 5.3 mi from the city center, Louisville Intl (SDF) is the airport most travelers will use when flying to Washington from Louisville.

  • How long is the flight from Louisville to State of Washington?

    American Airlines, Delta, and United Airlines can get you from Louisville to State of Washington in just under 7h 58m. Your travel time can differ by up to 1h 25m. There are 1939 mi between Louisville and State of Washington. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Louisville to State of Washington?

    The most popular flight routes from Louisville to State of Washington are Louisville Intl - Seattle/Tacoma Intl, Louisville Intl - Portland and Louisville Intl - Spokane.

  • Can I find deals for flights from Louisville to Washington that include hotel bookings?

    Yes. In addition to deals on Louisville to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Louisville to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to Washington.

  • Can I find deals for business class flights from Louisville to Washington?

    Yes. Cheapflights offers flight deals from Louisville to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Louisville to State of Washington?

    Currently, September is the cheapest month in which you can book a flight from Louisville to State of Washington (average of $80). Flying from Louisville to State of Washington in July is currently the most expensive (average of $218). 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.

See more FAQs

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Alternative routes for Louisville to Washington

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Top 5 airlines flying from Louisville to Washington

Discover the top 5 airlines that operate flights from Louisville to Washington. 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$209Average$409FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$270Average$401FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$270Average$522FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$278Average$451FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$506Average$616FlexibilityNo cancel feeOn-time75%

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