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$93+ 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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SDF
Jun 13 — Jun 201
Sat 6/13
Sat 6/20
1 adult, Economy
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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

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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 51 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 May 14, 2026.

This Southwest deal was found by Cheapflights users on 5/9. 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 6/310:50 am
BWI
-
SDF
Nonstop1h 50m
Southwest
Wed 6/245:35 am
SDF
-
BWI
Nonstop1h 35m
Southwest
Deal found 5/9$227
This Delta deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/39:25 am
BWI
-
SDF
1 stop4h 26m
Delta
Wed 6/2410:35 am
SDF
-
BWI
1 stop6h 10m
Delta
Deal found 5/9$237
This Southwest deal was found by Cheapflights users on 5/11. 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 6/13:05 pm
BWI
-
SDF
Nonstop1h 45m
Southwest
Tue 6/95:35 am
SDF
-
BWI
Nonstop1h 35m
Southwest
Deal found 5/11$242
This Delta deal was found by Cheapflights users on 5/11. 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 8/46:00 am
BWI
-
SDF
1 stop6h 21m
Delta
Tue 8/112:34 pm
SDF
-
BWI
1 stop6h 59m
Delta
Deal found 5/11$247
This Southwest deal was found by Cheapflights users on 5/11. 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 6/16:15 am
BWI
-
SDF
1 stop5h 25m
Southwest
Wed 6/33:45 pm
SDF
-
BWI
Nonstop1h 40m
Southwest
Deal found 5/11$252
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/312:50 pm
IAD
-
SDF
2 stops29h 25m
Multiple Airlines
Wed 6/2412:20 pm
SDF
-
IAD
1 stop7h 42m
Multiple Airlines
Deal found 5/9$252
This American Airlines deal was found by Cheapflights users on 5/12. 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 6/17:34 am
DCA
-
SDF
Nonstop2h 07m
American Airlines
Tue 6/96:01 am
SDF
-
DCA
Nonstop1h 49m
American Airlines
Deal found 5/12$253
This United Airlines deal was found by Cheapflights users on 5/13. 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 5/2812:48 pm
IAD
-
SDF
Nonstop1h 49m
United Airlines
Wed 6/176:00 am
SDF
-
IAD
Nonstop1h 35m
United Airlines
Deal found 5/13$253
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/56:25 pm
IAD
-
SDF
1 stop13h 47m
Multiple Airlines
Wed 7/812:16 pm
SDF
-
IAD
1 stop7h 42m
Multiple Airlines
Deal found 5/9$254
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/75:06 pm
IAD
-
SDF
1 stop15h 16m
Multiple Airlines
Wed 6/1012:20 pm
SDF
-
IAD
1 stop7h 42m
Multiple Airlines
Deal found 5/13$255
This Southwest deal was found by Cheapflights users on 5/13. 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 8/138:15 am
BWI
-
SDF
Nonstop1h 45m
Southwest
Mon 8/178:30 am
SDF
-
BWI
Nonstop1h 40m
Southwest
Deal found 5/13$257
This Delta deal was found by Cheapflights users on 5/13. 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 8/287:45 pm
DCA
-
SDF
1 stop4h 49m
Delta
Tue 9/12:15 pm
SDF
-
DCA
1 stop5h 03m
Delta
Deal found 5/13$258

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 May 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$227
(Southwest)

One-way from

$93
(Kiwi.com)

Popular in

April

Cheapest in

August

Average price

$358

Good round-trip deal

$249 or less

Good one-way deal

$180 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Louisville Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Louisville Intl flights.
Search Deals
From Washington, D.C. (WAS) to Louisville Intl
Search Deals
One-way flight from Washington, D.C. (WAS) to Louisville Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Louisville Intl.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to Louisville Intl.
Search Deals

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 May 14, 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

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Wed 7/8

12:27 pm-5:49 pm

1 stop5h 22m

Louisville Intl

Sat 7/11

3:50 pm-8:47 pm

1 stop4h 57m

$258

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Fri 8/28

8:00 am-12:21 pm

1 stop4h 21m

Louisville Intl

Tue 9/1

1:59 pm-6:34 pm

1 stop4h 35m

$258

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Sat 6/6

6:00 am-9:51 am

1 stop3h 51m

Louisville Intl

Wed 6/10

1:02 pm-6:30 pm

1 stop5h 28m

$258

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Sat 6/6

8:31 am-10:23 am

Nonstop1h 52m

Louisville Intl

Mon 6/8

6:00 am-7:35 am

Nonstop1h 35m

$264

BaltimoreLouisville

BWI - SDF

BWISDF

Baltimore/Washington

Sat 6/6

6:20 am-1:35 pm

1 stop7h 15m

Louisville Intl

Mon 6/8

7:47 pm-12:33 am

1 stop4h 46m

$267

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Sat 6/6

6:05 am-9:59 am

1 stop3h 54m

Louisville Intl

Thu 6/11

4:40 pm-9:46 pm

1 stop5h 06m

$269

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

Sat 7/4

7:30 am-1:11 pm

1 stop5h 41m

Louisville Intl

Mon 7/6

4:40 pm-11:44 pm

1 stop7h 04m

$269

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Thu 8/6

8:28 am-2:18 pm

1 stop5h 50m

Louisville Intl

Sat 8/8

6:00 am-10:03 am

1 stop4h 03m

$269

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Tue 8/25

12:30 pm-7:33 pm

1 stop7h 03m

Louisville Intl

Sat 8/29

6:00 am-10:03 am

1 stop4h 03m

$269

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Wed 7/8

12:37 pm-5:49 pm

1 stop5h 12m

Louisville Intl

Sat 7/11

3:50 pm-7:54 pm

1 stop4h 04m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Showing 1-10 of 60 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 May.
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?

The best time to book flights from Washington, D.C. to Louisville is 87 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, August is the cheapest month in which you can book a flight from Washington, D.C. to Louisville (average of $81). Flying from Washington, D.C. to Louisville in March 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 May 14, 2026.

Unlike at noon, when flights are generally more expensive, you can save up to 16% on flights from Washington, D.C. to Louisville by exploring options for tickets in the afternoon.

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 May 9, 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 afternoons 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 May 14, 2026.

The most flights from WAS to SDF are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 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 May 14, 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.
Southwest
8.0
Very good
4,299 reviews

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

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.
Southwest
8.0
Very good
4,299 reviews
Southwest
8.0
Very good
4,299 reviews

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

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.
Delta
7.9
Good
8,454 reviews
Southwest
8.0
Very good
4,299 reviews

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

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.
United Airlines
7.4
Good
9,711 reviews
Southwest
8.0
Very good
4,299 reviews

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

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.
American Airlines
7.1
Good
11,664 reviews
Southwest
8.0
Very good
4,299 reviews

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

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 11 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 45m. The distance between Washington, D.C. and Louisville is about 493 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, United Airlines ($189), American Airlines ($189), and Delta ($198) offers the cheapest pricing from Washington, D.C. to Louisville. You may be able to fly from Washington, D.C. to Louisville for 41% 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 Southwest from $134 one-way.

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

    The most popular flight routes from Washington, D.C. to Louisville are Washington, D.C. Dulles Intl - Louisville Intl, Baltimore/Washington - Louisville Intl and Washington, D.C. Reagan-National - Louisville Intl.

  • 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 Republic Airways (100%), Lufthansa (99%) or United Airlines (94%) 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 $312, our data shows the cheapest flight currently is $221. When looking at the most popular route, (Washington, D.C. Dulles Intl - Louisville Intl), you can expect to pay $227 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, August is the cheapest month in which you can book a flight from Washington, D.C. to Louisville (average of $81). Flying from Washington, D.C. to Louisville in March 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
Elizabethtown
Corydon
Jeffersonville
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 May 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$189Average$316FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$189Average$421FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$195Average$354FlexibilityNo cancel feeOn-time63%
DeltaCheapest$198Average$317FlexibilityNo cancel feeOn-timeN/A

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