SDF - WAS

$68 Find Cheap Flights from Louisville to Washington, D.C.

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Louisville to Washington, D.C. departing on 10/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C.

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Louisville to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Louisville to Washington, D.C., as well as popular online travel agencies
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Flight Deals

Cheap Flights from Louisville to Washington, D.C. (SDF-WAS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Louisville to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Louisville to Washington, D.C.

Tue, Nov 18 - Sat, Nov 22
United Airlines Logo
11:00 am - 5:14 pmSDF-BWI
6h 14m1 stop
United Airlines Logo
5:12 pm - 10:29 pmBWI-SDF
5h 17m1 stop
$135United Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
American Airlines Logo
4:28 pm - 8:48 pmSDF-BWI
4h 20m1 stop
American Airlines Logo
6:13 pm - 11:03 pmBWI-SDF
4h 50m1 stop
$159American Airlines
Find Deal
Wed, Dec 10 - Wed, Jan 14
American Airlines Logo
9:15 am - 1:48 pmSDF-BWI
4h 33m1 stop
American Airlines Logo
6:09 pm - 9:46 pmBWI-SDF
3h 37m1 stop
$169American Airlines
Find Deal
Mon, Oct 13 - Sat, Oct 18
Delta Logo
8:15 pm - 12:41 amSDF-BWI
4h 26m1 stop
Delta Logo
4:44 pm - 9:48 pmBWI-SDF
5h 04m1 stop
$177Delta
Find Deal
Wed, Dec 10 - Wed, Jan 14
Southwest Logo
5:30 am - 7:05 amSDF-BWI
1h 35mnonstop
Southwest Logo
11:40 am - 1:35 pmBWI-SDF
1h 55mnonstop
$180Southwest
Find Deal
Wed, Dec 10 - Wed, Jan 14
Southwest Logo
1:05 pm - 10:10 pmSDF-BWI
9h 05m1 stop
Southwest Logo
11:40 am - 1:35 pmBWI-SDF
1h 55mnonstop
$185Southwest
Find Deal
Sat, Nov 1 - Sun, Nov 2
United Airlines Logo
9:55 am - 11:33 amSDF-IAD
1h 38mnonstop
United Airlines Logo
12:50 pm - 2:45 pmIAD-SDF
1h 55mnonstop
$189United Airlines
Find Deal
Sat, Nov 1 - Mon, Nov 3
Delta Logo
3:11 pm - 7:24 pmSDF-IAD
4h 13m1 stop
Delta Logo
5:52 pm - 12:01 amIAD-SDF
6h 09m1 stop
$190Delta
Find Deal
Sun, Oct 26 - Sat, Nov 1
Spirit Airlines Logo
6:58 pm - 11:54 amSDF-BWI
16h 56m1 stop
Spirit Airlines Logo
9:00 pm - 11:47 pmBWI-SDF
26h 47m1 stop
$244Spirit Airlines
Find Deal
Fri, Oct 31 - Sun, Nov 2
Spirit Airlines Logo
11:47 am - 10:04 pmSDF-BWI
10h 17m2 stops
Spirit Airlines Logo
8:21 pm - 10:52 amBWI-SDF
14h 31m1 stop
$249Spirit Airlines
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
American's Basic Economy is budget-friendly with carry-on.
United's Economy Plus adds up to 6 inches of legroom.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
United Airlines
Cheapest • from $135 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
SDF-DCA
Cheapest • 7% average savings
SDF-IAD
Most popular
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
June
Cheapest • 10% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$135
Overall average: $309
United Airlines
Tue 11/18Sat 11/22
SDF - BWI • 1 stop
Cheapest non-stop
$180
Typical prices: $290-370
Southwest
Wed 12/10Wed 1/14
SDF - BWI • Non-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
Expert advice

Expert advice for your flight from Louisville to Washington, D.C.

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
American Airlines

Consider Basic Economy for budget travel with carry-on only, but compare total costs with Main Cabin.


Main Cabin Extra offers early boarding and complimentary drinks, ideal for longer flights or busy travel times.

United Airlines

Economy Plus offers up to 6 inches more legroom than standard economy, enhancing comfort on short flights.


Purchase Priority Boarding to avoid gate-checking carry-ons, placing you in Zone 2 for boarding.

Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

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
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Booking Insights

KAYAK's insights & trends for Louisville to Washington, D.C. flights

Get data-powered insights and trends into flights from Louisville to Washington, D.C. to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Louisville to Washington, D.C.?

What is the cheapest Louisville to Washington, D.C. flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Louisville to Washington, D.C. costs $189 on the route between Louisville (SDF) and Washington, D.C. Reagan-National Airport (DCA). Over the past month, this route was, on average, 7% cheaper than other Louisville-Washington, D.C. routes. The most popular route is between Louisville (SDF) and Washington, D.C. Dulles Intl Airport (IAD).

What’s the cheapest day of the week to fly from Louisville to Washington, D.C.?

The average price of all round-trip flights from Louisville to Washington, D.C. clicked on KAYAK for each day over the last 12 months.

For Louisville to Washington, D.C., Friday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Washington, D.C. back to Louisville, the best deals are generally found on Saturday, with Sunday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Louisville to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Louisville to Washington, D.C. is June, where tickets cost $239 (return) on average. On the other hand, the most expensive months are August and May, where the average cost of round-trip tickets is $304 and $299 respectively.

Can I save money by flying with a layover from Louisville to Washington, D.C.?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $288 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Louisville to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Louisville to Washington, D.C., you should book around 3 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$68
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 12% increase in price.
Flight from Louisville to Baltimore

When to book flights from Louisville to Washington, D.C.

Are your dates flexible? Find out the best times to travel from Louisville to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Louisville to Washington, D.C.

  • What is the cheapest flight from Louisville to Washington, D.C.?

    In the last 3 days, the lowest price for a flight from Louisville to Washington, D.C. was $68 for a one-way ticket and $135 for a round-trip.

  • Do I need a passport to fly between Louisville and Washington, D.C.?

    A passport is not required to fly from Louisville to Washington, D.C..

  • Which airports will I be using when flying from Louisville to Washington, D.C.?

    When flying out of Louisville you will be using Louisville Intl. You will be landing at one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

  • Which airlines offer Wi-Fi service onboard planes from Louisville to Washington, D.C.?

    American Airlines, and Delta offer inflight Wi-Fi service on the Louisville to Washington, D.C. flight route.

  • Which aircraft models fly most regularly from Louisville to Washington, D.C.?

    The Embraer 175 is the aircraft model that flies most regularly on the Louisville to Washington, D.C. flight route.

  • Which airline alliances offer flights from Louisville to Washington, D.C.?

    oneworld, and Star Alliance are the airline alliances operating flights between Louisville and Washington, D.C., with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Louisville to Washington, D.C.?

    There are nonstop flights from Louisville to Washington, D.C. on a daily basis.

  • Which is the best airline for flights from Louisville to Washington, D.C., Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Louisville to Washington, D.C. are Southwest and United Airlines. With an average price for the route of $272 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $268 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Louisville to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Louisville to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Louisville to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Louisville is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Louisville to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Louisville with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Louisville to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Louisville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Louisville to Washington, D.C.

  • Looking for a cheap flight? 25% of our users found flights on this route for $184 or less one-way and $288 or less round-trip.

Prefer to fly direct from Louisville to Washington, D.C.?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Louisville Intl to Washington, D.C..
Find which airlines fly direct from Louisville Intl Airport to Washington, D.C., which days they fly and book direct flights.

Direct departures

Louisville Intl to Washington, D.C.

Monday

American Airlines, United Airlines

American Airlines, United Airlines

Tuesday

American Airlines, United Airlines

American Airlines, United Airlines

Wednesday

American Airlines, United Airlines

American Airlines, United Airlines

Thursday

American Airlines, United Airlines

American Airlines, United Airlines

Friday

American Airlines, United Airlines

American Airlines, United Airlines

Saturday

American Airlines, United Airlines

American Airlines, United Airlines

Sunday

American Airlines, United Airlines

American Airlines, United Airlines

See more direct flights

Direct returns

Washington, D.C. to Louisville Intl

Monday

American Airlines, United Airlines

American Airlines, United Airlines

Tuesday

American Airlines, United Airlines

American Airlines, United Airlines

Wednesday

American Airlines, United Airlines

American Airlines, United Airlines

Thursday

American Airlines, United Airlines

American Airlines, United Airlines

Friday

American Airlines, United Airlines

American Airlines, United Airlines

Saturday

American Airlines, United Airlines

American Airlines, United Airlines

Sunday

American Airlines, United Airlines

American Airlines, United Airlines

See more direct flights

Reviews of the top 3 airlines serving from Louisville to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Louisville to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Louisville to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4242 reviews
8.6Crew
8.1Boarding
7.5Entertainment
8.0Comfort
7.0Food
Airline reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

10.0 ExcellentG, Sep 2025LAS - ATL
Read more Southwest reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

United airlines, mediocre at best. No issues , nothing great . Worked for me

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

Weather delay for 2.5 hours followed by half hour crew delay, did not have ginger ale, uncomfortable seats

It was nobody’s fault - but the plane came 4-hrs late and we were updated randomly in 20-30 mins increments which left us hostage to sit and wait expectantly. It was very long and got very late. Our plane didn’t land until nearly 1 am! Also the toilet wasn’t working. The hosts were nice enough but were clearly “about to pass out” as one told me. Lastly, there was no snack or even time for it. Just a bad experience overall.

To start, I’d like to say that every American Airline personnel I interacted with on the ground, especially flight crew, was very friendly and did their best to help me out. Despite this, however, my experience with the airline was an entire mess. The 7:19 PM flight was heavily delayed due to weather, and pushed to 10:30 AM the next morning. Because of this, I had to spend the night inside of the airport. At some point later in the night, I got an email saying that the flight had been canceled. I called the support number, and the representative on the other line told me that the flight was still on and that I didn’t need to rebook. The next morning, no one came to the gate to open the door for the crew until almost 11 AM. By this time the flight crew had been waiting for over an hour, and they had called management to get someone to open the door for them multiple times. Around 11:30, the gate screen had changed to a different flight. I ended up buying a last minute ticket with Southwest airline just to get to Chicago, because the next flight with American wasn’t until 7:19 pm that day. Now, earlier that morning my suitcase had been sent ahead of me to ORD. I went to baggage claim to ask them if I could have my suitcase forwarded to where I was staying. The representative at SDF baggage claim said they could and put the claim in for me. As I was going back through TSA, I got an email that the airline had found my suitcase, but the next step was to send it BACK to SDF. I called the airline support number again, and I made it clear that my suitcase needed to stay in Chicago and to not come back to SDF. The representative told me that they would hold my suitcase at ORD and that it wasn’t going to be forwarded anywhere. Once I got there, I found that they had loaded my suitcase onto a plane to send it back to SDF. Thankfully, I had gotten to the baggage claim counter in time for them to put in a request to bring my suitcase back up. My refund with the airline is processing already, but because of this entire experience and miscommunication at every turn of the way, I will not book with American Airlines in the future.

Cabin was roomy enough to easily slide my carry on under the seat in front of me!

The boarding crew was incredibly helpful getting me on an earlier flight

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

Flight delayed on both ends - have a gate ready at DCA, don't make us sit for 30min after being late to take off as well.

Everything you need to know for your flight from Louisville to Washington, D.C.

Information on your arrival and departure airports

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