What airlines fly to Louisville?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Louisville from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 89% of people opting to fly with this airline when traveling to Louisville. Keep in mind that there are 4 different airlines that fly to Louisville on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Louisville Intl?

Allegiant Air and United Airlines are the most popular carriers operating from Washington, D.C. Dulles Intl to Louisville Intl

What documentation or ID do you need to fly to Louisville Intl Airport?

The travel and health documents required for your trip to Louisville Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Louisville Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$124 Cheap Flights from Washington, D.C. Dulles Intl Airport to Louisville in 2026

Q: How many flights depart from Washington, D.C. Dulles Intl Airport to Louisville on average per week?

As of May 2026, there are 48 flights per week flying from Washington, D.C. Dulles Intl Airport to Louisville. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

Q: What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Louisville?

Prices are currently low for flights on this route. Typical prices usually range from $491 to $294. The lowest price recently found on this route was $258.

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Louisville

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:28 am - 12:21 pm

IAD

SDF

3h 53m

1 stop

7:05 am - 2:05 pm

SDF

IAD

7h 00m

1 stop

$258Delta

Fri, Aug 28 - Tue, Sep 1

11:10 am - 5:19 pm

IAD

SDF

6h 09m

1 stop

1:17 pm - 6:28 pm

SDF

IAD

5h 11m

1 stop

$259Delta

Thu, Aug 13 - Mon, Aug 17

8:31 am - 10:23 am

IAD

SDF

1h 52mnonstop

6:00 am - 7:35 am

SDF

IAD

1h 35mnonstop

$262United Airlines

Fri, Jun 26 - Mon, Jun 29

8:31 am - 10:23 am

IAD

SDF

1h 52mnonstop

6:00 am - 7:35 am

SDF

IAD

1h 35mnonstop

$264United Airlines

Fri, Jul 3 - Sun, Jul 5

7:26 pm - 12:34 am

IAD

SDF

5h 08m

1 stop

5:35 pm - 11:26 pm

SDF

IAD

5h 51m

1 stop

$269Delta

Fri, Aug 7 - Sun, Aug 9

6:10 am - 9:55 am

IAD

SDF

3h 45m

1 stop

7:30 pm - 12:05 am

SDF

IAD

4h 35m

1 stop

$273Delta

Wed, Nov 11 - Sun, Nov 15

8:25 am - 6:15 pm

IAD

SDF

9h 50m

2 stops

8:48 pm - 7:38 pm

SDF

IAD

22h 50m

1 stop

$275Multiple Airlines

Thu, Jul 2 - Mon, Jul 6

5:55 pm - 7:34 pm

IAD

SDF

1h 39mnonstop

10:00 am - 11:39 am

SDF

IAD

1h 39mnonstop

$278United Airlines

Fri, Oct 30 - Sun, Nov 1

8:35 am - 10:18 am

IAD

SDF

1h 43mnonstop

6:00 am - 7:35 am

SDF

IAD

1h 35mnonstop

$279United Airlines

Fri, Sep 11 - Sun, Sep 13

8:25 am - 6:15 pm

IAD

SDF

9h 50m

2 stops

9:24 pm - 6:33 pm

SDF

IAD

21h 09m

1 stop

$281Multiple Airlines

Thu, Aug 13 - Sun, Aug 16

American Airlines flights from Washington, D.C. Dulles Intl Airport to Louisville

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Louisville flight tickets

American Airlines

Jun 12

IAD8:22 pmWashington, D.C. Dulles Intl

4h 06m

1 stop

SDF12:28 amLouisville Intl

Jun 15

SDF8:08 pmLouisville Intl

4h 05m

1 stop

IAD12:13 amWashington, D.C. Dulles Intl

$284

American Airlines

Jun 11

IAD8:22 pmWashington, D.C. Dulles Intl

4h 06m

1 stop

SDF12:28 amLouisville Intl

Jun 15

SDF8:08 pmLouisville Intl

4h 05m

1 stop

IAD12:13 amWashington, D.C. Dulles Intl

$299

American Airlines

Jun 14

IAD6:20 amWashington, D.C. Dulles Intl

5h 07m

1 stop

SDF11:27 amLouisville Intl

Jun 30

SDF3:22 pmLouisville Intl

4h 11m

1 stop

IAD7:33 pmWashington, D.C. Dulles Intl

$313

Delta flights from Washington, D.C. Dulles Intl Airport to Louisville

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Louisville flight tickets

Delta

Jun 17

IAD6:00 amWashington, D.C. Dulles Intl

5h 53m

1 stop

SDF11:53 amLouisville Intl

Jun 20

SDF11:00 amLouisville Intl

5h 36m

1 stop

IAD4:36 pmWashington, D.C. Dulles Intl

$258

Delta

Aug 13

IAD11:10 amWashington, D.C. Dulles Intl

6h 09m

1 stop

SDF5:19 pmLouisville Intl

Aug 17

SDF1:17 pmLouisville Intl

5h 11m

1 stop

IAD6:28 pmWashington, D.C. Dulles Intl

$259

Delta

Aug 7

IAD7:26 pmWashington, D.C. Dulles Intl

5h 08m

1 stop

SDF12:34 amLouisville Intl

Aug 9

SDF5:35 pmLouisville Intl

5h 51m

1 stop

IAD11:26 pmWashington, D.C. Dulles Intl

$269

momondo 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 - SDF

IADSDF

Washington, D.C. Dulles Intl

Fri 8/28

8:28 am-12:21 pm

1 stop3h 53m

Louisville Intl

Tue 9/1

7:05 am-2:05 pm

1 stop7h 00m

$258

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Thu 8/13

11:10 am-5:19 pm

1 stop6h 09m

Louisville Intl

Mon 8/17

1:17 pm-6:28 pm

1 stop5h 11m

$259

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Fri 6/26

8:31 am-10:23 am

Nonstop1h 52m

Louisville Intl

Mon 6/29

6:00 am-7:35 am

Nonstop1h 35m

$262

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Fri 7/3

8:31 am-10:23 am

Nonstop1h 52m

Louisville Intl

Sun 7/5

6:00 am-7:35 am

Nonstop1h 35m

$264

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Fri 8/7

7:26 pm-12:34 am

1 stop5h 08m

Louisville Intl

Sun 8/9

5:35 pm-11:26 pm

1 stop5h 51m

$269

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Wed 11/11

6:10 am-9:55 am

1 stop3h 45m

Louisville Intl

Sun 11/15

7:30 pm-12:05 am

1 stop4h 35m

$273

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Thu 7/2

8:25 am-6:15 pm

2 stops9h 50m

Louisville Intl

Mon 7/6

8:48 pm-7:38 pm

1 stop22h 50m

$275

Quickest round-trip

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Fri 10/30

5:55 pm-7:34 pm

Nonstop1h 39m

Louisville Intl

Sun 11/1

10:00 am-11:39 am

Nonstop1h 39m

$278

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Fri 9/11

8:35 am-10:18 am

Nonstop1h 43m

Louisville Intl

Sun 9/13

6:00 am-7:35 am

Nonstop1h 35m

$279

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Thu 8/13

8:25 am-6:15 pm

2 stops9h 50m

Louisville Intl

Sun 8/16

9:24 pm-6:33 pm

1 stop21h 09m

$281

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Louisville

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Louisville?

What is the cheapest month to fly to Louisville?

If you are unable to visit Louisville during the month of January, then departing from Washington, D.C. Dulles Intl Airport during the month December is also very affordable. Most momondo users find prices during this month for around $299.

What is the cheapest day to depart on your flight to Louisville?

On average, the least expensive day to fly to Louisville from Washington, D.C. Dulles Intl Airport is on a Saturday. momondo users have found tickets for Saturday departures for as low as $282. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Washington, D.C. Dulles Intl Airport to Louisville on a Monday will generally be more expensive and average around $481. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Louisville?

Our data shows that the cheapest Washington, D.C. Dulles Intl Airport to Louisville flights are usually those with departure times in the afternoon. Our users have found flights to Louisville in the afternoon for as low as $311. At noon is when there is more demand to fly to Louisville, so prices are often more expensive at around $366 per ticket.

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

Fly from Washington, D.C. Dulles Intl to Louisville Intl for the best Washington, D.C. Dulles Intl - Louisville Intl flight prices

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

You are more likely to see cheaper flights to Louisville from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Louisville for around $330 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Louisville from Washington, D.C. Dulles Intl Airport for as low as $212 on momondo.

What cabin class options are available on Washington, D.C. Dulles Intl Airport to Louisville flights?

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl Airport to Louisville flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Louisville flights?

You could potentially save up to 59% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Louisville flight.

How have Washington, D.C. Dulles Intl Airport to Louisville flight prices changed over time?

As of May 2026, prices for Washington, D.C. Dulles Intl Airport to Louisville flights are approximately 87% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. Dulles Intl Airport to Louisville

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Louisville according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Louisville (IAD to SDF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Louisville

Best Price Found	$243
Fastest flight time	1h 39m
Direct flights	Mon, Wed, Thu, Fri, Sat and Sun
Airports in Louisville	1 airport

The best one-way flight to Louisville from Washington, D.C. Dulles Intl Airport in the past 72 hours is $243. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Louisville found on momondo in the last 72 hours is $249.

The fastest flight from Washington, D.C. Dulles Intl Airport to Louisville takes 1h 39m

Direct flights go from Washington, D.C. Dulles Intl Airport to Louisville on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is United Airlines.

There is 1 airport in Louisville. From Washington, D.C. Dulles Intl Airport there are direct flights to Louisville Intl (SDF).

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Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Louisville

How far is Washington, D.C. Dulles Intl to Louisville Intl by plane?
There are 450.6 mi between Washington, D.C. Dulles Intl and Louisville Intl. A reasonable flight in good conditions will take 1h 39m.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Louisville Intl Airport?
Prices for flights from Washington, D.C. Dulles Intl Airport to Louisville Intl Airport are updated daily.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Louisville Intl Airport?
There are 2 operators available for flights from Washington, D.C. Dulles Intl Airport to Louisville Intl Airport as of May 2026.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Louisville Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Louisville Intl Airport.
What documentation or ID do you need to fly to Louisville Intl Airport?
The travel and health documents required for your trip to Louisville Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Louisville Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Louisville?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Washington, D.C. Dulles Intl Airport to Louisville is Embraer 175 (Enhanced Winglets) (32.87% of total bookings). The next most popular plane models are Embraer 175 (17.98%), Canadair (Bombardier) Regional Jet 700 (12.36%), and Canadair (Bombardier) Regional Jet 900 (11.52%).
What is the most popular airline from Washington, D.C. Dulles Intl Airport to Louisville?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. Dulles Intl Airport to Louisville is United Airlines (94% of total bookings). The next most popular airline is Delta (6%).

Best airlines flying from Washington, D.C. Dulles Intl Airport to Louisville

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Louisville with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 9,749 reviews		Search United Airlines flights
Delta	PriceFrom $208	Free Cancellation	Rating 7.9 8,425 reviews		Search Delta flights

United Airlines Flights From Washington, D.C. Dulles Intl Airport to Louisville
The lowest priced United Airlines flight from Washington, D.C. Dulles Intl Airport to Louisville from the last 72 hours was $189. Generally, United Airlines has 21 flights on this route every week with an average price of $323. United Airlines is rated 7.4/10 by our users.

French Lick

Elizabethtown

Jeffersonville

West Baden Springs

Bardstown

New Albany

Shepherdsville

Brandenburg

Corydon

Elizabeth

Charlestown

Georgetown

Springfield

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Louisville?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Louisville for you.

Can I find flights from Washington, D.C. to Louisville with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Louisville from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Louisville?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Louisville from Washington, D.C..

I’m not ready to book a flight from Washington, D.C. to Louisville right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Louisville now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Louisville and let you know when they change.

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Cheap flights from Washington, D.C. Dulles Intl Airport to Louisville from $124

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American Airlines flights from Washington, D.C. Dulles Intl Airport to Louisville

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Louisville flight tickets

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Our best Delta deals on Washington, D.C. Dulles Intl Airport to Louisville flight tickets

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

See travel insights to Louisville from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Louisville

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Louisville?

What is the cheapest month to fly to Louisville?

What is the cheapest day to depart on your flight to Louisville?

What is the cheapest time of day to depart on your flight to Louisville?

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

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

What cabin class options are available on Washington, D.C. Dulles Intl Airport to Louisville flights?

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Louisville flights?

How have Washington, D.C. Dulles Intl Airport to Louisville flight prices changed over time?

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Louisville Intl?

What airlines fly to Louisville?

How many flights depart from Washington, D.C. Dulles Intl Airport to Louisville on average per day?

How many flights depart from Washington, D.C. Dulles Intl Airport to Louisville on average per week?

When to book flights from Washington, D.C. Dulles Intl Airport to Louisville

Cheap Washington, D.C. Dulles Intl Airport to Louisville (IAD to SDF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Louisville

Best Price Found

Fastest flight time

Direct flights

Airports in Louisville

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Louisville

Best airlines flying from Washington, D.C. Dulles Intl Airport to Louisville

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Louisville with momondo

United Airlines Flights From Washington, D.C. Dulles Intl Airport to Louisville

Traveling to a place near Louisville?

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