DCA - SDF

$105 Find Cheap Flights from Reagan Washington National Airport to Louisville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Reagan-National to Louisville departing on 11/10. 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 Louisville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Louisville, 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 Washington, D.C. to Louisville, as well as popular online travel agencies
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Cheap Flights from Reagan-National to Louisville (DCA-SDF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Reagan-National to Louisville 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 Reagan-National to Louisville

Thu, Nov 6 - Wed, Nov 12
Delta Logo
8:50 am - 3:51 pmDCA-SDF
7h 01m1 stop
Delta Logo
6:16 pm - 11:41 pmSDF-DCA
5h 25m1 stop
$209Delta
Find Deal
Tue, Nov 11 - Wed, Nov 12
Southwest Logo
6:10 am - 2:45 pmDCA-SDF
8h 35m1 stop
Southwest Logo
6:45 am - 2:40 pmSDF-DCA
7h 55m2 stops
$214Southwest
Find Deal
Wed, Nov 19 - Tue, Dec 2
American Airlines Logo
7:44 pm - 9:29 pmDCA-SDF
1h 45mnonstop
American Airlines Logo
4:59 pm - 6:49 pmSDF-DCA
1h 50mnonstop
$217American Airlines
Find Deal
Wed, Nov 5 - Sun, Nov 9
American Airlines Logo
8:31 am - 10:39 amDCA-SDF
2h 08mnonstop
American Airlines Logo
6:01 am - 7:45 amSDF-DCA
1h 44mnonstop
$218American Airlines
Find Deal
Tue, Nov 11 - Thu, Nov 13
Southwest Logo
8:15 am - 5:10 pmDCA-SDF
8h 55m2 stops
Southwest Logo
12:25 pm - 6:50 pmSDF-DCA
6h 25m2 stops
$219Southwest
Find Deal
Wed, Oct 29 - Thu, Oct 30
Southwest Logo
6:00 am - 3:05 pmDCA-SDF
9h 05m1 stop
Southwest Logo
6:15 am - 2:45 pmSDF-DCA
8h 30m2 stops
$224Southwest
Find Deal
Sat, Nov 15 - Sun, Nov 16
American Airlines Logo
10:15 am - 5:24 pmDCA-SDF
7h 09m1 stop
American Airlines Logo
6:01 am - 7:45 amSDF-DCA
1h 44mnonstop
$227American Airlines
Find Deal
Wed, Nov 5 - Sat, Nov 8
American Airlines Logo
3:25 pm - 8:19 pmDCA-SDF
4h 54m1 stop
American Airlines Logo
5:25 pm - 7:15 pmSDF-DCA
1h 50mnonstop
$228American Airlines
Find Deal
Sat, Nov 1 - Thu, Nov 6
American Airlines Logo
8:00 am - 3:08 pmDCA-SDF
7h 08m1 stop
American Airlines Logo
6:01 am - 7:45 amSDF-DCA
1h 44mnonstop
$229American Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
Delta Logo
7:35 pm - 12:01 amDCA-SDF
4h 26m1 stop
Delta Logo
5:25 pm - 10:54 pmSDF-DCA
5h 29m1 stop
$234Delta
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $209 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 25% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$209
Overall average: $285
Delta
Thu 11/6Wed 11/12
DCA - SDF • 1 stop
Cheapest non-stop
$217
Typical prices: $223-$390
American Airlines
Wed 11/19Tue 12/2
DCA - SDF • Non-stop
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Booking Insights

KAYAK's insights & trends for Reagan-National to Louisville flights

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

What’s the cheapest day of the week to fly from Reagan Washington National Airport to Louisville?

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

When flying from Reagan Washington National Airport to Louisville, you should consider leaving on a Saturday and avoid Thursdays if you are looking for the best rates. For your return to Reagan Washington National Airport, you’ll find the best rates on Thursdays and the most expensive ones on Sundays.

What is the cheapest month to fly from Washington, D.C. Reagan-National Airport to Louisville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Reagan-National Airport to Louisville, 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 Washington, D.C. Reagan-National Airport to Louisville is February, where tickets cost $224 (return) on average. On the other hand, the most expensive months are October and March, where the average cost of round-trip tickets is $402 and $369 respectively.

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

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 $259 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Reagan-National Airport to Louisville, 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 Washington, D.C. Reagan-National Airport to Louisville, you should book around 3 weeks before departure, which saves you about 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$105
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 34% increase in price.
Flight from Reagan Washington National Airport to Louisville

When to book flights from Reagan-National to Louisville

Are your dates flexible? Find out the best times to travel from Reagan-National to Louisville 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 Reagan Washington National Airport to Louisville flights

  • What is the cheapest flight from Washington, D.C. Reagan-National Airport to Louisville?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Reagan-National Airport to Louisville was $105 for a one-way ticket and $209 for a round-trip.

  • Do I need a passport to fly between Reagan Washington National Airport and Louisville?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Reagan Washington National Airport to Louisville?

    On your way to Louisville, you’ll fly out from Washington, D.C. Reagan-National. You’ll be landing at Louisville Intl.

  • Which airlines offer Wi-Fi service onboard planes from Reagan Washington National Airport to Louisville?

    American Airlines, and Delta offer inflight Wi-Fi service on the Reagan Washington National Airport to Louisville flight route.

  • Which aircraft models fly most regularly from Reagan Washington National Airport to Louisville?

    The Embraer 175 is the aircraft model that flies most regularly on the Reagan Washington National Airport to Louisville flight route.

  • Which airline alliances offer flights from Reagan Washington National Airport to Louisville?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Reagan Washington National Airport and Louisville, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Reagan Washington National Airport to Louisville?

    There are nonstop flights from Reagan Washington National Airport to Louisville on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Louisville are Delta and United Airlines. With an average price for the route of $253 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $254 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Reagan Washington National Airport to Louisville?

    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 Reagan Washington National Airport to Louisville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Reagan Washington National Airport to Louisville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Reagan Washington National Airport 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 Reagan Washington National Airport to Louisville?

    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 Louisville with an airline and back to Reagan Washington National Airport with another airline. Booking your flights between Reagan Washington National Airport and SDF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Reagan Washington National Airport to Louisville?

    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 Louisville from Reagan Washington National Airport 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 Washington, D.C. Reagan-National Airport to Louisville

  • Looking for a cheap flight? 25% of our users found flights on this route for $213 or less one-way and $254 or less round-trip.

Prefer to fly direct from Reagan Washington National Airport to Louisville?

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

Direct departures

Washington, D.C. Reagan-National to Louisville Intl

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Direct returns

Louisville Intl to Washington, D.C. Reagan-National

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Reviews of the top 3 airlines serving from Reagan-National to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Louisville. 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 Reagan-National to Louisville? 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.
7.9
DeltaOverall score based on 7977 reviews
8.2Boarding
7.3Food
7.9Entertainment
7.9Comfort
8.5Crew
Airline reviews

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

6.0 GoodFernando, Oct 2025SAN - ATL
Read more Delta reviews

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

On time flight. Seat comfort could be better in the Comfort section.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

The flight was an hour and a half late departing which was inconvenient

Delay in SLC jammed us up in Chicago. Got caught up in rush hour traffic

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

The flight was great. The gate location was way to far away!!!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

Poor seat in rear of aircraft Food at Admiral’s Club Terminal D at DFW inedible

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Flight was delayed because of a bird strike. They had another plane available within 45 minutes.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

My Internet did not work for Outlook email or basically anything. I paid for one hour of in-flight usage and it was terrible. I spent a lot of time on different sites and browsers with no luck and a lot of frustration. Other than that, the flight was on time, crew was nice, service was fine. Seat was OK even though I paid for the extra 6 inches. I cannot imagine how tight the seats in the back must be.

They are still charging me after taking 466 and 833 for round trip from AR to to Bradley airport from 19 to 21. Then poor experience. Am hurt and I will say it on social media. Please stay away from this airline. I see in my bank account they are still taking 644. Am trying to stop it. I used to fly United airlines and I suggest that if you don't want extra charges and good service you go back there. American airlines delayed my flight again and I was late for my meeting, no recompensation but charging me over and over.

They changed our Gate 5 times, and concourse twice. Changed our seats twice.

Pitch was very small. Knees were on the seat back in front of me.

Everything you need to know for your flight from Reagan-National to Louisville

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