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$88+ Cheap flights from Reagan-National (DCA) to Louisville (SDF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SDF
aug 21 — aug 281
tors 8/21
tors 8/28
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to Louisville Intl are usually found in February or January, booked 86 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from Reagan-National to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Louisville (SDF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated augusti 16, 2025.

Round-trip from

$186
(Southwest)

One-way from

$88
(Southwest)

Popular in

September

Cheapest in

February

Average price

$284

Good round-trip deal

$199 or less

Good one-way deal

$124 or less
From Washington, D.C. Reagan-National to Louisville Intl
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One-way flight from Washington, D.C. Reagan-National to Louisville Intl
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Highest demand for flights based on searches. 12% potential increase in price ($45 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Washington, D.C. Reagan-National to Louisville Intl.
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Price to beat on a one-way flight from Washington, D.C. Reagan-National to Louisville Intl.
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Find flight deals from Reagan-National to Louisville

Cheapest flights from Reagan-National to Louisville
Explore the most affordable flight options available from Reagan-National to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on augusti 16, 2025.

This Southwest deal was found by Cheapflights users on 8/14. 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.
lör 9/208:25 amDCA - SDF
1 stop6h 40mSouthwest
tis 9/233:20 pmSDF - DCA
1 stop7h 55mSouthwest
Deal found 8/14$186
This Delta deal was found by Cheapflights users on 8/14. 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.
tis 9/91:30 pmDCA - SDF
1 stop7h 25mDelta
lör 9/135:56 pmSDF - DCA
1 stop5h 46mDelta
Deal found 8/14$187
This American Airlines deal was found by Cheapflights users on 8/14. 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.
sön 8/318:03 pmDCA - SDF
Nonstop1h 57mAmerican Airlines
mån 9/87:35 pmSDF - DCA
Nonstop1h 44mAmerican Airlines
Deal found 8/14$188
This American Airlines deal was found by Cheapflights users on 8/15. 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.
tis 9/98:29 amDCA - SDF
Nonstop2h 12mAmerican Airlines
lör 9/136:00 amSDF - DCA
Nonstop1h 45mAmerican Airlines
Deal found 8/15$189
This American Airlines deal was found by Cheapflights users on 8/15. 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.
mån 9/298:30 pmDCA - SDF
Nonstop1h 52mAmerican Airlines
mån 10/66:05 amSDF - DCA
Nonstop1h 40mAmerican Airlines
Deal found 8/15$190
This Southwest deal was found by Cheapflights users on 8/14. 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.
sön 9/216:00 amDCA - SDF
1 stop8h 10mSouthwest
tis 9/303:20 pmSDF - DCA
1 stop7h 55mSouthwest
Deal found 8/14$192
This Delta deal was found by Cheapflights users on 8/14. 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.
mån 9/227:30 pmDCA - SDF
1 stop4h 22mDelta
tis 9/306:33 pmSDF - DCA
1 stop4h 24mDelta
Deal found 8/14$193
This Southwest deal was found by Cheapflights users on 8/14. 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.
tors 9/2510:45 amDCA - SDF
1 stop6h 00mSouthwest
lör 9/274:00 pmSDF - DCA
1 stop4h 25mSouthwest
Deal found 8/14$197
This American Airlines deal was found by Cheapflights users on 8/14. 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.
tors 8/288:19 amDCA - SDF
Nonstop1h 46mAmerican Airlines
sön 8/317:33 amSDF - DCA
Nonstop1h 45mAmerican Airlines
Deal found 8/14$199
This American Airlines deal was found by Cheapflights users on 8/14. 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.
sön 9/218:29 amDCA - SDF
Nonstop2h 12mAmerican Airlines
tis 9/307:35 pmSDF - DCA
Nonstop1h 44mAmerican Airlines
Deal found 8/14$202
This Southwest deal was found by Cheapflights users on 8/15. 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.
mån 9/2910:45 amDCA - SDF
1 stop6h 00mSouthwest
tis 9/307:15 amSDF - DCA
1 stop5h 40mSouthwest
Deal found 8/15$203

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National to Louisville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated augusti 16, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Louisville that are best for you.

Fly from

Reagan-National

Fly to

Louisville

Route

Depart

Return

Price

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

lör 9/20

8:25 am-3:05 pm

1 stop6h 40m

Louisville Intl

tis 9/23

3:20 pm-11:15 pm

1 stop7h 55m

$186

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

tis 9/9

1:30 pm-8:55 pm

1 stop7h 25m

Louisville Intl

lör 9/13

5:56 pm-11:42 pm

1 stop5h 46m

$187

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

sön 8/31

8:03 pm-10:00 pm

Nonstop1h 57m

Louisville Intl

mån 9/8

7:35 pm-9:19 pm

Nonstop1h 44m

$188

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

mån 9/1

8:19 am-10:05 am

Nonstop1h 46m

Louisville Intl

mån 9/8

7:35 pm-9:19 pm

Nonstop1h 44m

$188

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

tis 9/9

8:29 am-10:41 am

Nonstop2h 12m

Louisville Intl

lör 9/13

6:00 am-7:45 am

Nonstop1h 45m

$189

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

mån 9/29

5:10 pm-7:05 pm

Nonstop1h 55m

Louisville Intl

mån 10/6

6:05 am-7:45 am

Nonstop1h 40m

$189

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

sön 9/21

6:00 am-2:10 pm

1 stop8h 10m

Louisville Intl

tis 9/30

3:20 pm-11:15 pm

1 stop7h 55m

$192

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

mån 9/22

7:30 pm-11:52 pm

1 stop4h 22m

Louisville Intl

tis 9/30

6:33 pm-10:57 pm

1 stop4h 24m

$193

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

tors 9/25

6:00 am-9:46 am

1 stop3h 46m

Louisville Intl

mån 9/29

5:53 pm-10:42 pm

1 stop4h 49m

$197

Washington, D.C.Louisville

DCA - SDF

DCASDF

Washington, D.C. Reagan-National

tors 9/25

10:45 am-4:45 pm

1 stop6h 00m

Louisville Intl

lör 9/27

4:00 pm-8:25 pm

1 stop4h 25m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Showing 1-10 of 20 results
1
2

Best time to book a flight from Reagan-National to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Reagan-National with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Louisville

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

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to Louisville. Price data was last updated on August 8, 2025.

The price you pay for your flight from Washington, D.C. Reagan-National Airport to Louisville may vary depending on when you book. For the best chance of a lower fare, look to book 86 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Louisville (average of $299). Flying from Washington, D.C. Reagan-National Airport to Louisville in April is currently the most expensive (average of $369). 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 DCA to SDF?

Find hourly flight availability from Reagan-National to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated augusti 16, 2025.

It’s typically best to fly out from Washington, D.C. Reagan-National Airport to Louisville in the afternoon. Doing so could potentially save you 18% on the flight price compared to flying at noon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Reagan-National to Louisville. Price data was last updated on August 10, 2025.

Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to Louisville flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

Explore weekly flight availability from Reagan-National to Louisville. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated augusti 16, 2025.

The most flights from DCA to SDF are scheduled on a Monday (4 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Louisville. Reviews last updated augusti 16, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Washington, D.C. Reagan-National Airport to Louisville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,985 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,985 reviews
Delta
8.0
Very good
7,985 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,916 reviews
Delta
8.0
Very good
7,985 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,985 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Louisville from Washington, D.C. Reagan-National?

    Louisville Intl (SDF) is the airport you will fly into if you book a flight from Washington, D.C. Reagan-National to Louisville. You should not have trouble finding flights to Louisville Intl from Washington, D.C. Reagan-National; the airport handles an average of 3 inbound flights from Washington, D.C. Reagan-National per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Louisville airport from Washington, D.C. Reagan-National. It is only a 5.3 mi journey from Louisville Intl (SDF) to Louisville’s city center.

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

    Cheapflights users have booked flights from Washington, D.C. Reagan-National Airport to Louisville round-trip from $189. Other airlines that can offer you cheap pricing are Delta, from $198, and United Airlines, from $209. Users have found that American Airlines is 38% cheaper than the other options available to this destination.

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

    Before booking your flight to Louisville from Washington, D.C. Reagan-National Airport, check out the most reliable airlines to get you to your destination on time: Republic Airways (71%), American Airlines (61%), PSA Airlines( 55%).

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

    Looking for the cheapest flight from Washington, D.C. Reagan-National Airport to Louisville? While on average our users pay $261, our data indicates the cheapest price to be $89. The most popular route (Washington, D.C. Reagan-National - Louisville Intl), is priced around $177.

  • Can I find deals for flights from Reagan-National to Louisville that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Louisville?

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

  • Can I find deals for business class flights from Reagan-National to Louisville?

    Yes. Cheapflights offers flight deals from Reagan-National to Louisville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Louisville (average of $299). Flying from Washington, D.C. Reagan-National Airport to Louisville in April is currently the most expensive (average of $369). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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Alternative routes for Reagan-National to Louisville

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Nashville flights
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Baltimore to Blountville flights
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Reagan-National to Blountville flights
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Baltimore to Huntington flights
Baltimore to Paducah flights
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Reagan-National to Owensboro flights
Dulles Intl to Paducah flights
Reagan-National to Paducah flights

Top 3 airlines flying from Reagan-National to Louisville

Discover the top 3 airlines that operate flights from Reagan-National to Louisville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated augusti 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$189Average$314FlexibilityNo cancel feeOn-time71%
DeltaCheapest$198Average$253FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$209Average$287FlexibilityNo cancel feeOn-time69%

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