Louisville

$73+ Cheap flights from Washington, D.C. (WAS) to Louisville (SDF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SDF
Jan 17 — Jan 241
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Louisville with Cheapflights

1. Tell us where you want to go

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. to Louisville Intl are usually found in January or August, booked 55 days in advance, depart on a Saturday or Tuesday and return on a Friday

Cheap flight deals from Washington, D.C. to Louisville

Cheapest flights from Washington, D.C. to Louisville
Explore the most affordable flight options available from Washington, D.C. to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This American Airlines deal was found by Cheapflights users on 12/17. 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 12/315:30 pmDCA - SDF
Nonstop1h 56mAmerican Airlines
Thu 1/16:03 amSDF - DCA
Nonstop1h 39mAmerican Airlines
Deal found 12/17$219
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/3112:51 pmIAD - SDF
Nonstop1h 53mUnited Airlines
Thu 1/12:22 pmSDF - IAD
Nonstop1h 43mUnited Airlines
Deal found 12/17$219
This American Airlines deal was found by Cheapflights users on 12/16. 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 12/267:45 pmDCA - SDF
Nonstop1h 48mAmerican Airlines
Tue 1/64:32 pmSDF - DCA
Nonstop1h 46mAmerican Airlines
Deal found 12/16$234
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/265:15 pmIAD - SDF
Nonstop1h 56mUnited Airlines
Tue 1/69:50 amSDF - IAD
Nonstop1h 46mUnited Airlines
Deal found 12/16$234
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/3112:51 pmIAD - SDF
Nonstop1h 53mUnited Airlines
Sun 1/49:55 amSDF - IAD
Nonstop1h 41mUnited Airlines
Deal found 12/17$237
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/315:30 pmDCA - SDF
1 stop4h 44mAmerican Airlines
Sat 1/36:03 amSDF - DCA
Nonstop1h 39mAmerican Airlines
Deal found 12/17$242
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/315:30 pmDCA - SDF
Nonstop1h 56mAmerican Airlines
Sun 1/46:03 amSDF - DCA
Nonstop1h 39mAmerican Airlines
Deal found 12/17$249
This Delta deal was found by Cheapflights users on 12/16. 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 12/266:49 pmDCA - SDF
1 stop5h 07mDelta
Tue 1/63:37 pmSDF - DCA
1 stop4h 55mDelta
Deal found 12/16$254
This Delta deal was found by Cheapflights users on 12/16. 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 12/266:00 amIAD - SDF
1 stop7h 12mDelta
Tue 1/63:37 pmSDF - IAD
1 stop5h 00mDelta
Deal found 12/16$254
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/314:29 pmIAD - SDF
1 stop5h 45mAmerican Airlines
Thu 1/15:00 amSDF - IAD
1 stop3h 42mAmerican Airlines
Deal found 12/17$265
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/2612:51 pmIAD - SDF
Nonstop1h 53mUnited Airlines
Sun 1/49:55 amSDF - IAD
Nonstop1h 41mUnited Airlines
Deal found 12/17$267
This American Airlines deal was found by Cheapflights users on 12/16. 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 12/172:33 pmDCA - SDF
Nonstop1h 52mAmerican Airlines
Sat 1/36:03 amSDF - DCA
Nonstop1h 39mAmerican Airlines
Deal found 12/16$269

Find flight deals from Washington, D.C. to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$173
(Kiwi.com)

One-way from

$73
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$347

Good round-trip deal

$231 or less

Good one-way deal

$194 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Louisville Intl flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Louisville Intl flights.
From Washington, D.C. (WAS) to Louisville Intl
One-way flight from Washington, D.C. (WAS) to Louisville Intl
Highest demand for flights based on searches. 6% potential increase in price ($20 potential increase over avg. RT price).
Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Louisville Intl.
Price to beat on a one-way flight from Washington, D.C. (WAS) to Louisville Intl.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Louisville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Louisville that are best for you.

Fly from

Washington, D.C.

Fly to

Louisville

Route

Depart

Return

Price

BaltimoreLouisville

BWI - SDF

BWISDF

Baltimore/Washington

Mon 1/12

6:00 am-1:00 pm

1 stop7h 00m

Louisville Intl

Wed 1/14

1:55 pm-10:36 pm

1 stop8h 41m

$176

BaltimoreLouisville

BWI - SDF

BWISDF

Baltimore/Washington

Tue 2/3

6:20 am-2:41 pm

1 stop8h 21m

Louisville Intl

Thu 2/5

3:36 pm-11:59 pm

1 stop8h 23m

$182

BaltimoreLouisville

BWI - SDF

BWISDF

Baltimore/Washington

Mon 1/12

8:08 pm-2:41 pm

2 stops18h 33m

Louisville Intl

Wed 1/14

1:55 pm-11:47 pm

1 stop9h 52m

$199

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Thu 1/8

3:21 pm-10:07 am

1 stop18h 46m

Louisville Intl

Sun 1/11

4:39 pm-7:40 am

1 stop15h 01m

$199

BaltimoreLouisville

BWI - SDF

BWISDF

Baltimore/Washington

Tue 1/27

6:20 am-2:41 pm

1 stop8h 21m

Louisville Intl

Wed 1/28

1:55 pm-11:47 pm

1 stop9h 52m

$206

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Sun 5/24

12:05 pm-7:01 pm

1 stop6h 56m

Louisville Intl

Sat 5/30

5:45 pm-11:23 pm

1 stop5h 38m

$209

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Tue 1/27

1:00 pm-5:00 pm

1 stop4h 00m

Louisville Intl

Wed 1/28

12:50 pm-8:35 pm

1 stop7h 45m

$209

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Tue 1/13

6:00 pm-11:55 pm

1 stop5h 55m

Louisville Intl

Tue 1/20

12:22 pm-6:29 pm

1 stop6h 07m

$209

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Wed 1/14

1:45 pm-9:05 pm

1 stop7h 20m

Louisville Intl

Wed 1/21

5:00 pm-9:23 pm

1 stop4h 23m

$209

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Thu 2/26

6:05 am-10:04 am

1 stop3h 59m

Louisville Intl

Mon 3/2

8:55 am-2:39 pm

1 stop5h 44m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 59 results
1
2
3
...
6

Compare providers for flights from Washington, D.C. 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 Washington, D.C. to Louisville in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C.-Louisville flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-Louisville flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Louisville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Louisville flights, Cheapflights users trust eDreams the most. eDreams 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 Washington, D.C.-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 Washington, D.C. to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Washington, D.C. 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 Washington, D.C. to Louisville

How far ahead should I book a flight from Washington, D.C. to Louisville?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Louisville. Price data was last updated on December 12, 2025.

The best time to book flights from Washington, D.C. to Louisville is 55 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 Washington, D.C. to Louisville?

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Louisville (average of $114). Flying from Washington, D.C. to Louisville in November is currently the most expensive (average of $189). 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 WAS to SDF?

Find hourly flight availability from Washington, D.C. to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 30% on flights from Washington, D.C. to Louisville by exploring options for tickets in the evening.

What is the cheapest day to fly from Washington, D.C. to Louisville?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Louisville. Price data was last updated on December 13, 2025.

Travelers seeking maximum savings on their Washington, D.C. to Louisville flight should consider departing on Tuesday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 18, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Louisville, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Louisville. 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 into for flights to Louisville from Washington, D.C.?

    Louisville Intl (SDF) is the airport you will fly into if you book a flight from Washington, D.C. to Louisville. You should not have trouble finding flights to Louisville Intl from Washington, D.C.; the airport handles an average of 3 inbound flights from Washington, D.C. per day. You should also have plenty of airline options to choose from since 4 airlines have flights to the Louisville airport from Washington, D.C.. It is only a 5.3 mi journey from Louisville Intl (SDF) to Louisville’s city center.

  • How long is the flight from Washington, D.C. to Louisville?

    Departing from Washington, D.C. to Louisville will take you 4h. The distance between Washington, D.C. and Louisville is about 472 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. to Louisville round-trip?

    According to our current data, Delta ($98), American Airlines ($189), and United Airlines ($189) offers the cheapest pricing from Washington, D.C. to Louisville. You may be able to fly from Washington, D.C. to Louisville for 69% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Washington, D.C. to Louisville one-way?

    One-way options have recently been found by users for as low as $89 on American Airlines. Other airlines that offer cheap prices include Delta from $98 and United Airlines from $119 one-way.

  • What are the most popular routes from Washington, D.C. to Louisville?

  • What are the most reliable airlines from Washington, D.C. to Louisville?

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. to Louisville consider choosing United Airlines (78%), Mesa Airlines (78%) or Air Canada (76%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Washington, D.C. to Louisville?

    While on average a flight from Washington, D.C. to Louisville is generally $288, our data shows the cheapest flight currently is $158. When looking at the most popular route, (Washington, D.C. Dulles Intl - Louisville Intl), you can expect to pay $189 for that flight.

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

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

  • How can I find direct flights from Washington, D.C. to Louisville?

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

  • Can I find deals for business class flights from Washington, D.C. to Louisville?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Louisville 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 Washington, D.C. to Louisville?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Louisville (average of $114). Flying from Washington, D.C. to Louisville in November is currently the most expensive (average of $189). 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

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Washington, D.C. to Louisville

Discover the top 4 airlines that operate flights from Washington, D.C. to Louisville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$189Average$414FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$189Average$302FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$195Average$310FlexibilityNo cancel feeOn-time63%
DeltaCheapest$198Average$295FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.