Louisville

$102+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SDF
May 1 — May 81
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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

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Cheapflights Tip: The best prices from Washington, D.C. to Louisville Intl are usually found in August or July, booked 36 days in advance, depart on a Saturday or Wednesday 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 April 1, 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.
Thu 4/239:16 pm
BWI
-
SDF
1 stop21h 42m
Multiple Airlines
Mon 4/276:06 pm
SDF
-
BWI
1 stop15h 09m
Multiple Airlines
Deal found 3/31$189
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 4/2810:50 am
BWI
-
SDF
Nonstop1h 50m
Southwest
Tue 5/56:20 am
SDF
-
BWI
Nonstop1h 35m
Southwest
Deal found 3/31$207
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.
Fri 4/245:30 am
BWI
-
SDF
1 stop13h 28m
Multiple Airlines
Mon 4/276:06 pm
SDF
-
BWI
1 stop15h 09m
Multiple Airlines
Deal found 3/31$208
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 5/15:30 am
BWI
-
SDF
1 stop13h 28m
Multiple Airlines
Mon 5/47:48 pm
SDF
-
BWI
1 stop19h 40m
Multiple Airlines
Deal found 4/1$216
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.
Tue 4/2811:51 am
BWI
-
SDF
1 stop4h 51m
Delta
Tue 5/55:48 pm
SDF
-
BWI
1 stop6h 50m
Delta
Deal found 3/31$217
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 4/219:05 pm
BWI
-
SDF
Nonstop1h 50m
Southwest
Thu 4/234:45 pm
SDF
-
BWI
Nonstop1h 45m
Southwest
Deal found 3/31$221
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 5/261:35 pm
BWI
-
SDF
2 stops7h 30m
Southwest
Wed 5/276:20 am
SDF
-
BWI
Nonstop1h 35m
Southwest
Deal found 3/30$222
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:30 am
BWI
-
SDF
1 stop5h 55m
Southwest
Wed 5/63:30 pm
SDF
-
BWI
1 stop4h 20m
Southwest
Deal found 4/1$227
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 5/147:27 pm
BWI
-
SDF
1 stop23h 31m
Multiple Airlines
Mon 5/187:48 pm
SDF
-
BWI
1 stop19h 40m
Multiple Airlines
Deal found 4/1$228
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.
Fri 8/285:10 pm
DCA
-
SDF
Nonstop1h 48m
American Airlines
Mon 8/316:08 am
SDF
-
DCA
Nonstop1h 41m
American Airlines
Deal found 3/31$249
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.
Thu 6/118:31 am
IAD
-
SDF
Nonstop1h 52m
United Airlines
Sun 6/146:00 am
SDF
-
IAD
Nonstop1h 35m
United Airlines
Deal found 3/30$249
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 4/219:05 am
DCA
-
SDF
2 stops8h 05m
Southwest
Thu 4/232:40 pm
SDF
-
DCA
2 stops8h 20m
Southwest
Deal found 3/31$251

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 April 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$189
(Kiwi.com)

One-way from

$102
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$355

Good round-trip deal

$289 or less

Good one-way deal

$138 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 ($22 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in April 2026
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 April 1, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreLouisville

BWI - SDF

BWISDF

Baltimore/Washington

Wed 8/12

6:30 am-12:10 pm

1 stop5h 40m

Louisville Intl

Wed 8/19

5:10 pm-6:55 pm

Nonstop1h 45m

$217

BaltimoreLouisville

BWI - SDF

BWISDF

Baltimore/Washington

Thu 4/23

9:55 pm-11:45 pm

Nonstop1h 50m

Louisville Intl

Mon 4/27

5:45 am-7:20 am

Nonstop1h 35m

$235

BaltimoreLouisville

BWI - SDF

BWISDF

Baltimore/Washington

Tue 4/28

3:30 pm-9:05 pm

2 stops5h 35m

Louisville Intl

Tue 5/5

8:55 am-4:20 pm

2 stops7h 25m

$237

BaltimoreLouisville

BWI - SDF

BWISDF

Baltimore/Washington

Mon 5/4

2:00 pm-9:00 pm

1 stop7h 00m

Louisville Intl

Thu 5/7

5:45 am-7:20 am

Nonstop1h 35m

$245

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Tue 4/28

6:00 am-10:06 am

1 stop4h 06m

Louisville Intl

Tue 5/5

10:46 am-4:36 pm

1 stop5h 50m

$255

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Thu 4/23

6:00 am-10:06 am

1 stop4h 06m

Louisville Intl

Mon 4/27

6:55 am-12:59 pm

1 stop6h 04m

$255

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Thu 5/7

7:55 am-3:00 pm

1 stop7h 05m

Louisville Intl

Thu 5/7

5:25 pm-11:50 pm

1 stop6h 25m

$255

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Mon 5/4

7:55 am-3:00 pm

1 stop7h 05m

Louisville Intl

Thu 5/7

5:25 pm-11:50 pm

1 stop6h 25m

$255

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Fri 5/1

4:25 pm-10:10 pm

1 stop5h 45m

Louisville Intl

Sat 5/2

11:45 am-7:55 pm

1 stop8h 10m

$262

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Fri 5/22

6:15 pm-10:36 pm

1 stop4h 21m

Louisville Intl

Tue 5/26

5:30 pm-10:54 pm

1 stop5h 24m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 59 resultsSorted by cheapest first
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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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Louisville flight deals on Cheapflights vs. FlightHub >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 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 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 March 13, 2026.

The best time to book flights from Washington, D.C. to Louisville is 36 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, May is the cheapest month in which you can book a flight from Washington, D.C. to Louisville (average of $131). 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 April 1, 2026.

Unlike at noon, when flights are generally more expensive, you can save up to 10% on flights from Washington, D.C. to Louisville by exploring options for tickets in the morning.

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 March 28, 2026.

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

Weekly flight availability from Washington, D.C. to Louisville

Explore weekly flight availability from Washington, D.C. to Louisville. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 1, 2026.

The most flights from WAS to SDF are scheduled on a Monday (9 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (5 on average).

How much does it cost to fly round-trip from Washington, D.C. to Louisville?

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 April 1, 2026.
Read through reviews of airlines operating flights from Washington, D.C. to Louisville, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 6 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 1h 51m. The distance between Washington, D.C. and Louisville is about 450 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 68% 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 $98 on Delta. Other airlines that offer cheap prices include American Airlines from $104 and United Airlines from $124 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 Lufthansa (81%), Air Canada (80%) or Copa Airlines (80%) 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 $446, 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 $228 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, May is the cheapest month in which you can book a flight from Washington, D.C. to Louisville (average of $131). 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

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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 April 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$98Average$283FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$189Average$289FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$189Average$412FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$196Average$342FlexibilityNo cancel feeOn-time63%

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