SDF - WAS

$86 Find Cheap Flights from Louisville to Washington, D.C. - Compare and Save

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 8/19. 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.
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Everything you should know

Cheapest round-trip
$171
Typical prices: $239-$379
Southwest
Mon 8/17Thu 8/20
SDF - BWI • Non-stop
Cheapest one-way
$86
Typical prices: $184-$244
Southwest
Wed 8/19
SDF - BWI • Non-stop
Top airlines
Cheapest • from $171 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with American Airlines and United Airlines. Average duration is 1h 40m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top routes
Cheapest • 12% average savings
Most popular
Insights
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 32% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 10% price drop
Most popular
Good to know
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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.

Mon, Aug 17 - Thu, Aug 20
Southwest Logo
8:30 am - 10:10 am
SDF
-
BWI
1h 40mnonstop
Southwest Logo
8:55 pm - 10:35 pm
BWI
-
SDF
1h 40mnonstop
$171Southwest
Sat, Aug 15 - Mon, Aug 17
American Airlines Logo
6:08 am - 7:57 am
SDF
-
DCA
1h 49mnonstop
American Airlines Logo
7:45 pm - 9:38 pm
DCA
-
SDF
1h 53mnonstop
$171American Airlines
Sat, Aug 22 - Sat, Aug 29
United Airlines Logo
10:05 am - 11:47 am
SDF
-
IAD
1h 42mnonstop
United Airlines Logo
12:50 pm - 2:37 pm
IAD
-
SDF
1h 47mnonstop
$171United Airlines
Mon, Aug 17 - Sat, Aug 22
Southwest Logo
4:10 pm - 11:15 pm
SDF
-
BWI
7h 05m
1 stop
Southwest Logo
7:35 pm - 9:20 pm
BWI
-
SDF
1h 45mnonstop
$181Southwest
Sat, Aug 22 - Sat, Aug 29
Southwest Logo
6:45 am - 2:25 pm
SDF
-
BWI
7h 40m
2 stops
Southwest Logo
7:35 pm - 9:20 pm
BWI
-
SDF
1h 45mnonstop
$186Southwest
Mon, Oct 5 - Mon, Oct 12
Southwest Logo
5:35 am - 7:05 am
SDF
-
BWI
1h 30mnonstop
Southwest Logo
10:30 pm - 12:10 am
BWI
-
SDF
1h 40mnonstop
$189Southwest
Mon, Aug 24 - Thu, Aug 27
Delta Logo
6:00 am - 10:57 am
SDF
-
BWI
4h 57m
1 stop
Delta Logo
6:15 am - 9:54 am
BWI
-
SDF
3h 39m
1 stop
$191Delta
Thu, Aug 27 - Mon, Aug 31
Delta Logo
9:52 am - 4:42 pm
SDF
-
IAD
6h 50m
1 stop
Delta Logo
6:00 am - 10:32 am
IAD
-
SDF
4h 32m
1 stop
$191Delta
Fri, Sep 11 - Mon, Sep 14
United Airlines Logo
1:56 pm - 3:34 pm
SDF
-
IAD
1h 38mnonstop
United Airlines Logo
8:35 am - 10:18 am
IAD
-
SDF
1h 43mnonstop
$194United Airlines
Wed, Sep 2 - Sun, Sep 6
American Airlines Logo
6:11 am - 8:00 am
SDF
-
DCA
1h 49mnonstop
American Airlines Logo
7:45 pm - 9:38 pm
DCA
-
SDF
1h 53mnonstop
$194American Airlines
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.?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Louisville to Washington, D.C. departing in August.

Flight prices are below average for this route right now.

Flights to Washington, D.C. from Louisville usually cost between $249 and $332 in August.
The lowest price found in the past 5 days was $171 on Southwest (Aug 17-Aug 20).

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 $207 on the route between Louisville (SDF) and Washington, D.C. Reagan-National Airport (DCA). Over the past month, this route was, on average, 12% 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 Monday 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 November, where tickets cost $260 (return) on average. On the other hand, the most expensive months are June and April, where the average cost of round-trip tickets is $332 and $308 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.

No, with an average price for the route of $303, prices are generally cheapest when you fly direct.

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 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Expert advice

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

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American 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.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

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.

Good to know

Low season

February

Cheapest flight

$86
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 16% lower on average.
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 5 days, the lowest price for a flight from Louisville to Washington, D.C. was $86 for a one-way ticket and $171 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, Delta, and JetBlue 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.?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Louisville and Washington, D.C., with SkyTeam 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 $329 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 $264 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 $244 or less one-way and $340 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 4230 reviews
8.0Comfort
7.0Food
8.6Crew
8.1Boarding
7.5Entertainment
Airline reviews

Poor customer service, no accommodation for passengers when the flight was delayed over 5 hours.

2.0 MediocreChristopher, Jul 2026
DEN - SJC
Read more Southwest reviews

Poor customer service, no accommodation for passengers when the flight was delayed over 5 hours.

Friendly crew kept coming by to make sure all was ok, provide additional refreshments, etc.

It was good. Last flight was delayed but I always say that is in God's plan

Red eye from San Diego. Temperature of the cabin was way too warm and the air duct flowed very little air.

Overall good, just screaming kids in the area the whole flight.

My experience will Southwest was good. I wish there was more entertainment and the boarding process was slow at time but other than that my experience was great definitely will be flying with SouthWest again.

Flight was delayed by 2 hours, meaning that a flight to Dwnver which should have arrived at 11pm came into the airport at 1 am. Made for a very long day.

The flight was delayed about 20 minutes, but this was an evening flight, so it comes as no surprise. This flight came a good 1.5 days ahead of hurricane Helene which was still far out in the gulf. However, the flight never removed the seated buckle light. The staff announced from the beginning that due to the bad weather (I suppose the hurricane a day and a half away) they would have to do an abbreviated service with water and a snack. I am fine with their water and snack offering, but this was one of the smoothest flights I've had in years. If Southwest believes a flight like this requires everyone to remain seated, then all of their flights should remain buckled for the entire flight. I cannot help but wonder if things like this are a sneaky way to cut back on expenses since the airline is currently under a lot of pressure to reduce costs.

Although the flight was delayed, but the crew was amazing. They did the best they could to make the time enjoyable.

My experience was find with Southwest. The only issue I have is...at the exact time for me to check in...I don't understand how I always end up in C.

Our flight gor canceled and there was no one to help us but told us to scan the qr code and fill the forms on-line. Very poor service especially we are tourists traveling to Washington DC for the 1st time.

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

It was terribly delayed with zero support from united airlines. I reached at 1 am in the night. They did not provide any option to change the flights.

Flight was delayed 14 hours due to DC air show and weather. Missed connection to MUC.

Horrible I am at almost 2,000,000 miles on United. This was probably the worst flight ever. An hour and a half before takeoff I get a message that they’re changing the plane and I no longer have a seat in Polaris business Supposedly, there was a problem with the plane, but then there was no other plane Finally, they decided to bring a plane from Newark to Washington Dulles Of course the original flight was at 10:45 PM so by the time the plane got there it was 12:30 AM. It had not been cleaned. It had not been catered. They don’t really have people available to do those things when it’s not pre-programmed at 1 o’clock in the morning. The crew had to be changed And the new plane held 28 fewer people than the scheduled plane There is no way you can hate United Airlines enough The people at the gate were actually just fine, but it was management who was completely useless And did they send extra help to the people at the gate? Did they send supervisors? Of course not. Just don’t take United find somebody else or buy a boat

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

Like all planes recently, entertainment is achieved by giving the patron free WiFi and letting them stream shows via the screen on a phone or tablet.

Crew and agents misguiding on tight connections, and lack of connecting crew looking for inbound planes. A very avoidable missed connection as a result.

My flight was 4 hours delayed on departure at 6a causing me to miss my connection at DCA. I had to scramble to find a seat home on a later flight and instead of an exit seat, I was in row 30 on a flight getting me home 5 hours later than planned. The AA team on the ground did a fine job. AA continues to run the airline like the passengers are cargo.

American Airlines changed are gate no fewer than four times. Walking back and forth from one concourse to another was exhausting, especially after all the flight delays.

Hydraulic leak caused the flight to be cancelled. Auto system scheduled us on a 3 am flight. Wevhsedvrebook on the app and hit schedules later in the afternoon. Our luggage per gate and ticket agent would be rescanned and put in our new flight. Did not happen. Our luggage stayed in hsv. Baggage claim in wash dc unable to help. We filed a claim. Several emails about our luggage were in conflict with one another. Called as baggage and was on hold 30 minutes. Oscar said one of 2 was out fir delivery then cancelled. About 45 minutes later both pieces were delivered. Their system is suspect

Flight had mechanical issues and it was delayed 30 mins - some of us boarded and then had to deplane.

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.

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!

They needed to de-ice the plane. Apparently airlines have a problem keeping their de-icing vehicles in good repair. After we backed away from the gate we sat and didn't move for nearly an hour. Nearly an HOUR with minimal communication from the flight crew. Eventually the sun took care of what American Airlines could not and melted the minimal ice. We finally took of a hour late which, in turn, jacked up our connection in Chicago.

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

Information on your arrival and departure airports