How long is the flight from Washington, D.C. Dulles Intl Airport to Louisville?

A quick flight from Washington, D.C. Dulles Intl Airport to Louisville can take about 1h 43m. Delta provides one of the quickest options available for as low as $283. Washington, D.C. Dulles Intl Airport and Louisville are separated by a distance of 450 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

According to our current data, United Airlines ($189), and Delta ($208) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Louisville. You may be able to fly from Washington, D.C. Dulles Intl Airport to Louisville for 45% less than the average price by searching for these airlines.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Louisville

The most flights from IAD to SDF are scheduled on a Monday (7 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

In terms of precipitation, rainfall in Louisville ranges from 3.1 - 5.3 inches per month. May is typically the wettest month, when rainfall can reach 5.3 in. September is typically the driest time to visit Louisville when rainfall is around 3.1 in.

If weather is an important factor for your trip to Louisville, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Louisville?

Looking at all options, your cheapest flight can be booked for $213. While the most popular route (Washington, D.C. Dulles Intl - Louisville Intl) can be booked for $189 on average, our data indicates $351 when flying from Washington, D.C. Dulles Intl Airport to Louisville.

What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Louisville?

The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Louisville are Mesa Airlines (85%), Copa Airlines (83%) and United Airlines (82%).

Most accurate provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Louisville flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Louisville 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 Washington, D.C. Dulles Intl Airport-Louisville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Louisville from Washington, D.C. Dulles Intl?

Louisville Intl (SDF) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Louisville. You should not have trouble finding flights to Louisville Intl from Washington, D.C. Dulles Intl; the airport handles an average of 6 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the Louisville airport from Washington, D.C. Dulles Intl. It is only a 5.3 mi journey from Louisville Intl (SDF) to Louisville’s city center.

Can I find deals for flights from Dulles Intl to Louisville that include hotel bookings?

Yes. In addition to deals on Dulles Intl to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Dulles Intl to Louisville?

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

Can I find deals for business class flights from Dulles Intl to Louisville?

Yes. Cheapflights offers flight deals from Dulles Intl 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.

$140+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Louisville

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Louisville Intl are usually found in January or September, booked 65 days in advance, depart on a Saturday or Wednesday and return on a Friday

Cheap flight deals from Dulles Intl to Louisville

Cheapest

Best

Last-minute

One-way

Cheapest flights from Dulles Intl to Louisville
Explore the most affordable flight options available from Dulles Intl to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 31, 2026.

Fri 10/26:10 am -

1 stop3h 42m

Mon 10/57:55 pm -

1 stop4h 46m

Deal found 8/26

$237

Thu 10/15:34 pm -

Nonstop1h 50m

Sat 10/310:00 am -

Nonstop1h 42m

Deal found 8/30

$239

Wed 10/285:35 pm -

Nonstop1h 55m

Sun 11/16:00 am -

Nonstop1h 35m

Deal found 8/26

$243

Thu 11/56:05 am -

1 stop3h 54m

Sun 11/85:57 pm -

1 stop6h 45m

Deal found 8/31

$254

Fri 10/168:35 am -

Nonstop1h 43m

Mon 10/196:00 am -

Nonstop1h 35m

Deal found 8/26

$255

Sat 10/1012:55 pm -

Nonstop1h 44m

Sun 10/186:00 am -

Nonstop1h 35m

Deal found 8/31

$256

Wed 11/115:35 pm -

Nonstop1h 55m

Sat 11/149:55 am -

Nonstop1h 38m

Deal found 8/28

$259

Mon 9/217:17 pm -

1 stop4h 42m

Tue 9/2911:04 am -

1 stop6h 07m

Deal found 8/26

$263

Tue 9/228:08 am -

1 stop4h 12m

Sat 9/265:30 pm -

1 stop5h 44m

Deal found 8/31

$264

Wed 9/238:35 am -

Nonstop1h 43m

Wed 9/306:00 am -

Nonstop1h 35m

Deal found 8/26

$268

Wed 9/166:00 am -

1 stop4h 19m

Tue 9/295:50 pm -

1 stop5h 24m

Deal found 8/27

$269

Thu 10/112:50 pm -

2 stops20h 55m

Mon 10/57:21 pm -

1 stop24h 48m

Deal found 8/27

$272

Best flights from Dulles Intl to Louisville
Discover carefully curated flight deals from Dulles Intl to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 31, 2026.

Thu 11/56:05 am -

1 stop3h 54m

Sun 11/85:57 pm -

1 stop6h 45m

Deal found 8/29

$254

Thu 10/88:35 am -

Nonstop1h 43m

Sat 10/1010:00 am -

Nonstop1h 42m

Deal found 8/26

$283

Sat 10/105:08 pm -

1 stop4h 05m

Sat 10/171:59 pm -

1 stop6h 15m

Deal found 8/27

$292

Fri 10/238:35 am -

Nonstop1h 43m

Sun 10/256:00 am -

Nonstop1h 35m

Deal found 8/27

$299

Fri 9/255:15 pm -

1 stop4h 01m

Fri 10/27:55 pm -

1 stop4h 46m

Deal found 8/28

$299

Thu 11/58:37 am -

Nonstop1h 57m

Sun 11/86:00 am -

Nonstop1h 35m

Deal found 8/28

$304

Sat 9/2612:55 pm -

Nonstop1h 44m

Mon 10/59:04 am -

1 stop4h 55m

Deal found 8/27

$307

Thu 10/86:05 am -

1 stop3h 54m

Sat 10/101:59 pm -

1 stop6h 15m

Deal found 8/26

$343

Fri 10/233:47 pm -

1 stop4h 44m

Mon 10/266:00 am -

Nonstop1h 35m

Deal found 8/26

$316

Sat 11/215:35 pm -

Nonstop1h 55m

Wed 11/259:02 am -

1 stop4h 33m

Deal found 8/30

$352

Last-minute flights from Dulles Intl to Louisville
Discover last-minute flight deals from Dulles Intl to Louisville. Data last updated August 31, 2026 and is based on user searches.

Wed 9/166:00 am -

1 stop4h 19m

Tue 9/295:50 pm -

1 stop5h 24m

Deal found 8/27

$269

Thu 9/173:15 pm -

1 stop6h 44m

Sat 9/1910:32 am -

1 stop5h 58m

Deal found 8/27

$294

Sun 9/206:00 am -

1 stop4h 19m

Wed 9/306:00 am -

1 stop5h 30m

Deal found 8/26

$283

Mon 9/217:17 pm -

1 stop4h 42m

Tue 9/2911:04 am -

1 stop6h 07m

Deal found 8/26

$263

Tue 9/228:08 am -

1 stop4h 12m

Sat 9/265:30 pm -

1 stop5h 44m

Deal found 8/31

$264

Wed 9/238:35 am -

Nonstop1h 43m

Wed 9/306:00 am -

Nonstop1h 35m

Deal found 8/26

$268

Fri 9/255:34 pm -

Nonstop1h 50m

Fri 10/26:00 am -

Nonstop1h 35m

Deal found 8/28

$279

Fri 9/257:17 pm -

1 stop4h 42m

Sat 10/37:55 am -

1 stop3h 38m

Deal found 8/26

$293

Sat 9/265:34 pm -

Nonstop1h 50m

Tue 10/62:12 pm -

Nonstop1h 38m

Deal found 8/29

$259

Sat 9/2612:50 pm -

2 stops44h 55m

Mon 10/57:21 pm -

1 stop24h 48m

Deal found 8/27

$286

Sun 9/2712:50 pm -

2 stops20h 55m

Sun 10/49:51 pm -

1 stop20h 21m

Deal found 8/27

$292

One-way flights from Dulles Intl to Louisville
Search for one-way flight options from Dulles Intl to Louisville. Find affordable one-way fares based on user searches. Data last updated August 31, 2026.

Thu 9/178:25 am -

2 stops25h 20m

Deal found 8/26

$140

Sat 11/77:52 am -

2 stops36h 37m

Deal found 8/27

$150

Thu 9/1012:50 pm -

2 stops20h 55m

Deal found 8/29

$151

Wed 11/186:07 pm -

2 stops26h 22m

Deal found 8/30

$157

Wed 9/236:13 pm -

2 stops26h 16m

Deal found 8/27

$164

Sun 11/86:07 pm -

1 stop23h 56m

Deal found 8/27

$177

Fri 9/251:50 pm -

3 stops20h 21m

Deal found 8/27

$178

Fri 9/187:50 am -

2 stops26h 21m

Deal found 8/29

$184

Thu 10/2212:50 pm -

2 stops20h 55m

Deal found 8/29

$185

Find flight deals from Dulles Intl to Louisville

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$237 (Delta)
One-way from	$140 (Kiwi.com)
Popular in	June
Cheapest in	January
Average price	$334
Good round-trip deal	$274 or less
Good one-way deal	$268 or less

Provider with most accurate pricing for Washington, D.C. Dulles Intl-Louisville Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Louisville Intl flights.

Search Deals

From Washington, D.C. Dulles Intl to Louisville Intl

Search Deals

One-way flight from Washington, D.C. Dulles Intl to Louisville Intl

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($60 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Louisville Intl.

Search Deals

Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Louisville Intl.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Louisville

IAD Washington, D.C. Dulles Intl - SDF Louisville Intl

IADSDF

Washington, D.C. Dulles Intl

Thu 11/5

6:05 am-9:59 am

1 stop3h 54m

Louisville Intl

Sun 11/8

5:57 pm-12:42 am

1 stop6h 45m

$254

Washington, D.C.Louisville

IAD Washington, D.C. Dulles Intl - SDF Louisville Intl

IADSDF

Washington, D.C. Dulles Intl

Thu 10/8

8:35 am-10:18 am

Nonstop1h 43m

Louisville Intl

Sat 10/10

10:00 am-11:42 am

Nonstop1h 42m

$283

Washington, D.C.Louisville

IAD Washington, D.C. Dulles Intl - SDF Louisville Intl

IADSDF

Washington, D.C. Dulles Intl

Sat 10/10

5:08 pm-9:13 pm

1 stop4h 05m

Louisville Intl

Sat 10/17

1:59 pm-8:14 pm

1 stop6h 15m

$292

Quickest round-trip

Washington, D.C.Louisville

IAD Washington, D.C. Dulles Intl - SDF Louisville Intl

IADSDF

Washington, D.C. Dulles Intl

Fri 10/23

8:35 am-10:18 am

Nonstop1h 43m

Louisville Intl

Sun 10/25

6:00 am-7:35 am

Nonstop1h 35m

$299

Washington, D.C.Louisville

IAD Washington, D.C. Dulles Intl - SDF Louisville Intl

IADSDF

Washington, D.C. Dulles Intl

Fri 9/25

5:15 pm-9:16 pm

1 stop4h 01m

Louisville Intl

Fri 10/2

7:55 pm-12:41 am

1 stop4h 46m

$299

Washington, D.C.Louisville

IAD Washington, D.C. Dulles Intl - SDF Louisville Intl

IADSDF

Washington, D.C. Dulles Intl

Thu 11/5

8:37 am-10:34 am

Nonstop1h 57m

Louisville Intl

Sun 11/8

6:00 am-7:35 am

Nonstop1h 35m

$304

Washington, D.C.Louisville

IAD Washington, D.C. Dulles Intl - SDF Louisville Intl

IADSDF

Washington, D.C. Dulles Intl

Sat 9/26

12:55 pm-2:39 pm

Nonstop1h 44m

Louisville Intl

Mon 10/5

9:04 am-1:59 pm

1 stop4h 55m

$307

Washington, D.C.Louisville

IAD Washington, D.C. Dulles Intl - SDF Louisville Intl

IADSDF

Washington, D.C. Dulles Intl

Fri 10/23

3:47 pm-8:31 pm

1 stop4h 44m

Louisville Intl

Mon 10/26

6:00 am-7:35 am

Nonstop1h 35m

$316

Washington, D.C.Louisville

IAD Washington, D.C. Dulles Intl - SDF Louisville Intl

IADSDF

Washington, D.C. Dulles Intl

Thu 10/8

6:05 am-9:59 am

1 stop3h 54m

Louisville Intl

Sat 10/10

1:59 pm-8:14 pm

1 stop6h 15m

$343

Washington, D.C.Louisville

IAD Washington, D.C. Dulles Intl - SDF Louisville Intl

IADSDF

Washington, D.C. Dulles Intl

Sat 11/21

5:35 pm-7:30 pm

Nonstop1h 55m

Louisville Intl

Wed 11/25

9:02 am-1:35 pm

1 stop4h 33m

$352

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/28

Showing 1-10 of 21 resultsSorted by cheapest first

Compare providers for flights from Dulles Intl to Louisville

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Louisville in August.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust 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 Washington, D.C. Dulles Intl Airport-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Louisville flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Louisville 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 Washington, D.C. Dulles Intl Airport-Louisville 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 Dulles Intl to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Dulles Intl with our price prediction graph.

IAD-SDF

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. Dulles Intl Airport to Louisville

Prices

Airlines

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

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Louisville may vary depending on when you book. For the best chance of a lower fare, look to book 61 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. Dulles Intl Airport to Louisville?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Louisville (average of $249). Flying from Washington, D.C. Dulles Intl Airport to Louisville in June is currently the most expensive (average of $459). 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 IAD to SDF?

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Louisville is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 20% on airfare.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Louisville?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Louisville flights typically cost between $249 and $431 in October.
The cheapest round-trip price found within the last 5 days was $237 on Delta (Oct 2-Oct 7).

Reviews of airlines servicing Louisville

Read reviews from past customers who have flown Delta and United Airlines from Washington, D.C. Dulles Intl Airport to Louisville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.8

Good

8,533 reviews

Reviews

1 / 20

8.0

Excellent

Jorge,Aug 2026

TPA - ATL

Although I still enjoy flying Delta, the overall flying experience feels cheapened. But I guess that is true of most, if not all american carriers.

Delta

7.8

Good

8,533 reviews

Delta

7.8

Good

8,533 reviews

Reviews

1 / 20

8.0

Excellent

Jorge,Aug 2026

TPA - ATL

Although I still enjoy flying Delta, the overall flying experience feels cheapened. But I guess that is true of most, if not all american carriers.

United Airlines

7.4

Good

10,146 reviews

Delta

7.8

Good

8,533 reviews

Reviews

1 / 20

8.0

Excellent

Jorge,Aug 2026

TPA - ATL

Although I still enjoy flying Delta, the overall flying experience feels cheapened. But I guess that is true of most, if not all american carriers.

Related info for your journey

What airport do you fly into for flights to Louisville from Washington, D.C. Dulles Intl?
Louisville Intl (SDF) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Louisville. You should not have trouble finding flights to Louisville Intl from Washington, D.C. Dulles Intl; the airport handles an average of 6 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the Louisville airport from Washington, D.C. Dulles Intl. It is only a 5.3 mi journey from Louisville Intl (SDF) to Louisville’s city center.
How long is the flight from Washington, D.C. Dulles Intl Airport to Louisville?
A quick flight from Washington, D.C. Dulles Intl Airport to Louisville can take about 1h 43m. Delta provides one of the quickest options available for as low as $283. Washington, D.C. Dulles Intl Airport and Louisville are separated by a distance of 450 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Louisville round-trip?
According to our current data, United Airlines ($189), and Delta ($208) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Louisville. You may be able to fly from Washington, D.C. Dulles Intl Airport to Louisville for 45% less than the average price by searching for these airlines.
What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Louisville?
The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Louisville are Mesa Airlines (85%), Copa Airlines (83%) and United Airlines (82%).
What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Louisville?
Looking at all options, your cheapest flight can be booked for $213. While the most popular route (Washington, D.C. Dulles Intl - Louisville Intl) can be booked for $189 on average, our data indicates $351 when flying from Washington, D.C. Dulles Intl Airport to Louisville.
Can I find deals for flights from Dulles Intl to Louisville that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Louisville?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Louisville.
Can I find deals for business class flights from Dulles Intl to Louisville?
Yes. Cheapflights offers flight deals from Dulles Intl 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. Dulles Intl Airport to Louisville?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Louisville (average of $249). Flying from Washington, D.C. Dulles Intl Airport to Louisville in June is currently the most expensive (average of $459). 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

Corydon

Shepherdsville

Elizabethtown

Jeffersonville

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Other flights from Dulles Intl

Popular flights

Top 2 airlines flying from Dulles Intl to Louisville

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$189	Average$343	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$208	Average$358	FlexibilityNo cancel fee	On-timeN/A

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$140+ Cheap flights from Dulles Intl (IAD) 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Louisville with Cheapflights

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3. Compare prices and book

Cheap flight deals from Dulles Intl to Louisville

Cheapest flights from Dulles Intl to LouisvilleExplore the most affordable flight options available from Dulles Intl to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 31, 2026.

Explore the most affordable flight options available from Dulles Intl to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 31, 2026.

Best flights from Dulles Intl to LouisvilleDiscover carefully curated flight deals from Dulles Intl to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 31, 2026.

Discover carefully curated flight deals from Dulles Intl to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 31, 2026.

Last-minute flights from Dulles Intl to LouisvilleDiscover last-minute flight deals from Dulles Intl to Louisville. Data last updated August 31, 2026 and is based on user searches.

Discover last-minute flight deals from Dulles Intl to Louisville. Data last updated August 31, 2026 and is based on user searches.

One-way flights from Dulles Intl to LouisvilleSearch for one-way flight options from Dulles Intl to Louisville. Find affordable one-way fares based on user searches. Data last updated August 31, 2026.

Search for one-way flight options from Dulles Intl to Louisville. Find affordable one-way fares based on user searches. Data last updated August 31, 2026.

Find flight deals from Dulles Intl to Louisville

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Louisville that are best for you.

Compare providers for flights from Dulles Intl to Louisville

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 Dulles Intl to Louisville in August.

Best time to book a flight from Dulles Intl to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Dulles Intl with our price prediction graph.

Cheapflights Insights

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

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Louisville may vary depending on when you book. For the best chance of a lower fare, look to book 61 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. Dulles Intl Airport to Louisville?

What is the cheapest time of day to fly from IAD to SDF?

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Louisville is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 20% on airfare.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Louisville?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Louisville flights typically cost between $249 and $431 in October.The cheapest round-trip price found within the last 5 days was $237 on Delta (Oct 2-Oct 7).

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Louisville

The most flights from IAD to SDF are scheduled on a Monday (7 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

Reviews of airlines servicing Louisville

Read reviews from past customers who have flown Delta and United Airlines from Washington, D.C. Dulles Intl Airport to Louisville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly into for flights to Louisville from Washington, D.C. Dulles Intl?

How long is the flight from Washington, D.C. Dulles Intl Airport to Louisville?

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

What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Louisville?

What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Louisville?

Can I find deals for flights from Dulles Intl to Louisville that include hotel bookings?

How can I find direct flights from Dulles Intl to Louisville?

Can I find deals for business class flights from Dulles Intl to Louisville?

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

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Alternative routes for Dulles Intl to Louisville

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Other flights to Louisville

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Dulles Intl and Louisville flights

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Cheapest flights from Dulles Intl to Louisville
Explore the most affordable flight options available from Dulles Intl to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 31, 2026.

Best flights from Dulles Intl to Louisville
Discover carefully curated flight deals from Dulles Intl to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 31, 2026.

Last-minute flights from Dulles Intl to Louisville
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One-way flights from Dulles Intl to Louisville
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Washington, D.C. Dulles Intl Airport to Louisville flights typically cost between $249 and $431 in October.
The cheapest round-trip price found within the last 5 days was $237 on Delta (Oct 2-Oct 7).