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 88% 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?

United Airlines and Delta 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.

$87 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 April 2026, there are 34 flights per week flying from Washington, D.C. Dulles Intl Airport to Louisville. The most common day of the week flights depart is Wed, with 18% 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 $454 to $259. The lowest price recently found on this route was $252.

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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.

8:31 am - 10:23 am

IAD

SDF

1h 52mnonstop

6:00 am - 7:35 am

SDF

IAD

1h 35mnonstop

$252United Airlines

Thu, May 21 - Mon, May 25

5:45 pm - 7:42 pm

IAD

SDF

1h 57mnonstop

5:50 am - 7:30 am

SDF

IAD

1h 40mnonstop

$255United Airlines

Thu, May 7 - Mon, May 11

1:38 pm - 2:33 pm

IAD

SDF

24h 55m

1 stop

6:55 pm - 11:21 am

SDF

IAD

16h 26m

2 stops

$256Multiple Airlines

Wed, Jul 15 - Sun, Jul 19

5:25 pm - 7:18 pm

IAD

SDF

1h 53mnonstop

10:00 am - 11:40 am

SDF

IAD

1h 40mnonstop

$257United Airlines

Thu, May 28 - Mon, Jun 1

6:00 am - 9:51 am

IAD

SDF

3h 51m

1 stop

6:26 pm - 10:59 pm

SDF

IAD

4h 33m

1 stop

$258Delta

Tue, Aug 25 - Sat, Aug 29

5:30 pm - 11:30 am

IAD

SDF

18h 00m

1 stop

12:20 pm - 11:17 pm

SDF

IAD

10h 57m

2 stops

$259Multiple Airlines

Tue, Jun 2 - Wed, Jun 10

8:31 am - 10:14 am

IAD

SDF

1h 43mnonstop

10:05 am - 11:46 am

SDF

IAD

1h 41mnonstop

$260United Airlines

Fri, Aug 14 - Sun, Aug 16

6:08 am - 10:20 am

IAD

SDF

4h 12m

1 stop

3:29 pm - 8:02 pm

SDF

IAD

4h 33m

1 stop

$262Delta

Sun, May 24 - Sat, May 30

5:15 pm - 9:37 pm

IAD

SDF

4h 22m

1 stop

10:43 am - 4:41 pm

SDF

IAD

5h 58m

1 stop

$268Delta

Fri, Aug 28 - Tue, Sep 1

10:08 pm - 11:59 pm

IAD

SDF

1h 51mnonstop

5:50 am - 7:30 am

SDF

IAD

1h 40mnonstop

$269United Airlines

Fri, May 8 - Sun, May 10

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

Apr 24

IAD8:11 pmWashington, D.C. Dulles Intl

4h 14m

1 stop

SDF12:25 amLouisville Intl

Apr 27

SDF7:52 pmLouisville Intl

4h 07m

1 stop

IAD11:59 pmWashington, D.C. Dulles Intl

$277

American Airlines

Apr 21

IAD3:53 pmWashington, D.C. Dulles Intl

5h 27m

1 stop

SDF9:20 pmLouisville Intl

May 22

SDF8:08 pmLouisville Intl

4h 05m

1 stop

IAD12:13 amWashington, D.C. Dulles Intl

$284

American Airlines

Apr 24

IAD8:11 pmWashington, D.C. Dulles Intl

4h 14m

1 stop

SDF12:25 amLouisville Intl

Apr 26

SDF7:52 pmLouisville Intl

4h 07m

1 stop

IAD11:59 pmWashington, D.C. Dulles Intl

$299

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

Aug 25

IAD6:00 amWashington, D.C. Dulles Intl

3h 51m

1 stop

SDF9:51 amLouisville Intl

Aug 29

SDF6:26 pmLouisville Intl

4h 33m

1 stop

IAD10:59 pmWashington, D.C. Dulles Intl

$258

Delta

May 24

IAD6:08 amWashington, D.C. Dulles Intl

4h 12m

1 stop

SDF10:20 amLouisville Intl

May 30

SDF3:29 pmLouisville Intl

4h 33m

1 stop

IAD8:02 pmWashington, D.C. Dulles Intl

$262

Delta

Aug 28

IAD5:15 pmWashington, D.C. Dulles Intl

4h 22m

1 stop

SDF9:37 pmLouisville Intl

Sep 1

SDF10:43 amLouisville Intl

5h 58m

1 stop

IAD4:41 pmWashington, D.C. Dulles Intl

$268

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

Thu 5/21

8:31 am-10:23 am

Nonstop1h 52m

Louisville Intl

Mon 5/25

6:00 am-7:35 am

Nonstop1h 35m

$252

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Thu 5/7

5:45 pm-7:42 pm

Nonstop1h 57m

Louisville Intl

Mon 5/11

5:50 am-7:30 am

Nonstop1h 40m

$255

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Wed 7/15

1:38 pm-2:33 pm

1 stop24h 55m

Louisville Intl

Sun 7/19

6:55 pm-11:21 am

2 stops16h 26m

$256

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Thu 5/28

5:25 pm-7:18 pm

Nonstop1h 53m

Louisville Intl

Mon 6/1

10:00 am-11:40 am

Nonstop1h 40m

$257

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Tue 8/25

6:00 am-9:51 am

1 stop3h 51m

Louisville Intl

Sat 8/29

6:26 pm-10:59 pm

1 stop4h 33m

$258

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Tue 6/2

5:30 pm-11:30 am

1 stop18h 00m

Louisville Intl

Wed 6/10

12:20 pm-11:17 pm

2 stops10h 57m

$259

Quickest round-trip

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Fri 8/14

8:31 am-10:14 am

Nonstop1h 43m

Louisville Intl

Sun 8/16

10:05 am-11:46 am

Nonstop1h 41m

$260

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Sun 5/24

6:08 am-10:20 am

1 stop4h 12m

Louisville Intl

Sat 5/30

3:29 pm-8:02 pm

1 stop4h 33m

$262

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Fri 8/28

5:15 pm-9:37 pm

1 stop4h 22m

Louisville Intl

Tue 9/1

10:43 am-4:41 pm

1 stop5h 58m

$268

Washington, D.C.Louisville

IAD - SDF

IADSDF

Washington, D.C. Dulles Intl

Fri 5/8

10:08 pm-11:59 pm

Nonstop1h 51m

Louisville Intl

Sun 5/10

5:50 am-7:30 am

Nonstop1h 40m

$269

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 July is also very affordable. Most momondo users find prices during this month for around $284.

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 $281. 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 $457. 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 morning. Our users have found flights to Louisville in the morning for as low as $305. At noon is when there is more demand to fly to Louisville, so prices are often more expensive at around $324 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 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 $329 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 to Louisville Intl flights?

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl to Louisville Intl 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 38% 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 April 2026, prices for Washington, D.C. Dulles Intl Airport to Louisville flights are approximately 115% 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	$298
Fastest flight time	1h 43m
Direct flights	Every day
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 $298. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Louisville found on momondo in the last 72 hours is $289.

The fastest flight from Washington, D.C. Dulles Intl Airport to Louisville takes 1h 43m

Direct flights go from Washington, D.C. Dulles Intl Airport to Louisville every day.

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

Search flight deals

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 43m.
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 April 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) (39.01% of total bookings). The next most popular plane models are Embraer 175 (17.03%), Canadair (Bombardier) Regional Jet 900 (13.31%), and Boeing 737 MAX 8 (9.60%).
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 9,569 reviews		Search United Airlines flights
Delta	PriceFrom $203	Free Cancellation	Rating 7.9 8,406 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 15 flights on this route every week with an average price of $316. United Airlines is rated 7.4/10 by our users.

French Lick

Elizabethtown

West Baden Springs

Jeffersonville

Bardstown

New Albany

Shepherdsville

Corydon

Brandenburg

Elizabeth

Charlestown

Springfield

Georgetown

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 $87

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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

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

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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 to Louisville?

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

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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

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List of cabin classes available on flights landing in Louisville. Availability may vary depending on flight origin and airline.

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