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Washington, D.C.

$90+ Cheap flights from Louisville (SDF) to Washington, D.C. (WAS)

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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — WAS
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Find cheap flights from Louisville to Washington, D.C. 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 Louisville Intl to Washington, D.C. are usually found in November or June, booked 41 days in advance, depart on a Friday or Thursday and return on a Saturday

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

Cheapest flights from Louisville to Washington, D.C.
Explore the most affordable flight options available from Louisville to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/296:00 am
SDF
-
DCA
Nonstop1h 42m
American Airlines
Sat 4/46:49 pm
DCA
-
SDF
Nonstop2h 02m
American Airlines
Deal found 2/1$189
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Fri 5/296:00 am
SDF
-
IAD
Nonstop1h 35m
United Airlines
Tue 6/28:30 am
IAD
-
SDF
Nonstop1h 47m
United Airlines
Deal found 2/2$189
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/41:19 pm
SDF
-
BWI
1 stop6h 11m
Multiple Airlines
Wed 3/1110:06 am
BWI
-
SDF
1 stop28h 27m
Multiple Airlines
Deal found 2/2$203
This CheapOair deal was found by Cheapflights users on 2/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:33 pm
SDF
-
BWI
1 stop26h 13m
Spirit Airlines
Tue 3/106:20 am
BWI
-
SDF
1 stop8h 18m
Spirit Airlines
Deal found 2/1$204
This American Airlines deal was found by Cheapflights users on 1/31. 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.
Thu 4/1610:08 am
SDF
-
DCA
Nonstop1h 45m
American Airlines
Sun 4/197:38 am
DCA
-
SDF
Nonstop2h 00m
American Airlines
Deal found 1/31$204
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:30 pm
SDF
-
IAD
Nonstop1h 40m
United Airlines
Tue 4/712:50 pm
IAD
-
SDF
Nonstop1h 57m
United Airlines
Deal found 2/1$204
This Delta deal was found by Cheapflights users on 2/2. 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 5/292:40 pm
SDF
-
DCA
1 stop6h 19m
Delta
Tue 6/27:32 pm
DCA
-
SDF
1 stop4h 48m
Delta
Deal found 2/2$209
This Delta deal was found by Cheapflights users on 2/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/255:33 am
SDF
-
IAD
1 stop6h 02m
Delta
Sat 2/286:00 am
IAD
-
SDF
1 stop4h 04m
Delta
Deal found 2/1$209
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 2/263:33 pm
SDF
-
BWI
1 stop17h 08m
Multiple Airlines
Mon 3/29:04 pm
BWI
-
SDF
1 stop17h 34m
Multiple Airlines
Deal found 2/1$213
This Southwest deal was found by Cheapflights users on 2/1. 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 4/88:55 am
SDF
-
DCA
1 stop5h 25m
Southwest
Wed 4/157:25 am
DCA
-
SDF
2 stops7h 20m
Southwest
Deal found 2/1$214
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 4/93:33 pm
SDF
-
BWI
1 stop8h 26m
Spirit Airlines
Wed 4/155:58 pm
BWI
-
SDF
1 stop20h 40m
Spirit Airlines
Deal found 2/1$217
This American Airlines deal was found by Cheapflights users on 2/3. 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.
Thu 7/26:15 am
SDF
-
DCA
Nonstop1h 45m
American Airlines
Mon 7/612:28 pm
DCA
-
SDF
Nonstop2h 02m
American Airlines
Deal found 2/3$219

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

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Washington, D.C. (WAS). 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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$189
(American Airlines)

One-way from

$90
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$249

Good round-trip deal

$233 or less

Good one-way deal

$186 or less
Provider with most accurate pricing for Louisville Intl-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Washington, D.C. (WAS) flights.
Search Deals
From Louisville Intl to Washington, D.C. (WAS)
Search Deals
One-way flight from Louisville Intl to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Louisville Intl to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Louisville Intl to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Washington, D.C. 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 February 3, 2026.
Use the filters below to find and compare flights from Louisville to Washington, D.C. that are best for you.

Fly from

Louisville

Fly to

Washington, D.C.

Route

Depart

Return

Price

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Sat 3/7

9:55 am-11:38 am

Nonstop1h 43m

Washington, D.C. Dulles Intl

Tue 3/17

5:43 pm-7:42 pm

Nonstop1h 59m

$189

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Mon 2/23

2:35 pm-4:13 pm

Nonstop1h 38m

Washington, D.C. Dulles Intl

Mon 12/14

5:55 pm-7:34 pm

Nonstop1h 39m

$189

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Wed 2/25

2:35 pm-4:13 pm

Nonstop1h 38m

Washington, D.C. Dulles Intl

Mon 12/14

5:55 pm-7:34 pm

Nonstop1h 39m

$189

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Fri 4/17

5:36 pm-11:41 pm

1 stop6h 05m

Washington, D.C. Reagan-National

Sun 4/19

6:00 am-12:11 pm

1 stop6h 11m

$209

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Thu 3/19

5:35 pm-10:42 pm

1 stop5h 07m

Washington, D.C. Reagan-National

Thu 3/26

6:00 am-11:25 am

1 stop5h 25m

$209

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Tue 3/3

10:18 am-2:39 pm

1 stop4h 21m

Washington, D.C. Reagan-National

Tue 3/10

9:40 am-1:37 pm

1 stop3h 57m

$209

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Thu 4/16

8:10 am-12:40 pm

1 stop4h 30m

Washington, D.C. Reagan-National

Sun 4/19

6:00 am-10:24 am

1 stop4h 24m

$209

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Tue 2/24

5:02 pm-11:07 pm

1 stop6h 05m

Washington, D.C. Reagan-National

Sat 2/28

6:03 am-10:04 am

1 stop4h 01m

$209

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Fri 2/27

5:02 pm-11:07 pm

1 stop6h 05m

Washington, D.C. Reagan-National

Sat 2/28

10:10 am-5:01 pm

1 stop6h 51m

$209

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Fri 5/29

6:03 am-12:59 pm

1 stop6h 56m

Washington, D.C. Reagan-National

Mon 6/1

6:20 am-1:32 pm

1 stop7h 12m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 55 results
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Compare providers for flights from Louisville to Washington, D.C.

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 Washington, D.C. in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 Louisville-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Louisville-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-Washington, D.C. 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-Washington, D.C. 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 Washington, D.C.

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

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

Use this chart to determine the optimal time to book a round-trip flight from Louisville to Washington, D.C.. Price data was last updated on January 30, 2026.

Booking 41 days in advance of your planned departure date is, on average, the best time to get cheap flights from Louisville to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Louisville to Washington, D.C.?

Currently, October is the cheapest month in which you can book a flight from Louisville to Washington, D.C. (average of $108). Flying from Louisville to Washington, D.C. in June is currently the most expensive (average of $181). 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 WAS?

Find hourly flight availability from Louisville to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 3, 2026.

Unlike at noon, when flights are generally more expensive, you can save up to 48% on flights from Louisville to Washington, D.C. by exploring options for tickets in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Louisville to Washington, D.C.. Price data was last updated on January 31, 2026.

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

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

Explore weekly flight availability from Louisville to Washington, D.C.. 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 February 3, 2026.

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

The best insider tips for Louisville to Washington, D.C. flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Louisville to Washington, D.C. trip
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on Lufthansa

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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, D.C.. Reviews last updated February 3, 2026.
See what other customers who have flown with Southwest, United Airlines, and American Airlines from Louisville to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

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
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

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
United Airlines
7.4
Good
9,236 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

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
American Airlines
7.2
Good
11,216 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

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 Louisville to Washington, D.C.. 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, D.C.?

    Most people fly from Louisville Intl (SDF) if they book a flight from Louisville to Washington, D.C.. On average, Louisville Intl has 9 outbound flights to Washington, D.C. per day from 4 airlines. Louisville Intl is conveniently located just 5.3 mi from Louisville’s city center.

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

    Airlines like United Airlines, Delta, and Southwest fly from Louisville to Washington, D.C. in about 1h 43m. The time it takes to get you to your destination can typically vary by up to 4h 22m. There are 450 mi between Louisville and Washington, D.C.. This flight may include one or multiple stops.

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

    American Airlines, at $189, was found to be the cheapest airline from Louisville to Washington, D.C..Alternate airlines to your destination round-trip include United Airlines and Delta. You may be able to fly from Louisville to Washington, D.C. for 28% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Louisville to Washington, D.C. 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 $104 one-way.

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

    Most travelers choose Louisville Intl - Baltimore/Washington, Louisville Intl - Washington, D.C. Dulles Intl or Louisville Intl - Washington, D.C. Reagan-National when deciding on the best route from Louisville to Washington, D.C..

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

    No one likes to see their flight delayed. When booking a flight from Louisville to Washington, D.C. consider choosing Lufthansa (78%), Air Canada (77%) or Copa Airlines (77%) as they are the most reliable in getting you off to your destination on time.

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

    Looking for the cheapest flight from Louisville to Washington, D.C.? While on average our users pay $897, our data indicates the cheapest price to be $228. The most popular route (Louisville Intl - Baltimore/Washington), is priced around $203.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Louisville to Washington, D.C. (average of $108). Flying from Louisville to Washington, D.C. in June is currently the most expensive (average of $181). 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 Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Upper Marlboro
Manassas
Largo
Bowie
McLean
Clinton

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 Louisville to Washington, D.C.

Discover the top 4 airlines that operate flights from Louisville to Washington, D.C.. 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$179Average$328FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$189Average$290FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$189Average$277FlexibilityNo cancel feeOn-time71%
DeltaCheapest$198Average$301FlexibilityNo cancel feeOn-timeN/A

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