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

Delta, United Airlines, and Southwest are the most popular carriers operating from Louisville Intl to Washington, D.C.

What airlines fly to Washington, D.C.?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Washington, D.C. from Louisville according to our data. American Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

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

As of March 2026, there are 74 flights per week flying from Louisville to Washington, D.C.. The most common day of the week flights depart is Sun, with 16% of flights taking off on this day.

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

The number of flights available between Louisville and Washington, D.C. is 10 per day as of March 2026. The most frequent departure time is 9:00AM, with 54% of daily flights leaving at noon.

When did momondo last update prices for flights from Louisville Intl Airport to Washington, D.C.?

Prices for flights from Louisville Intl Airport to Washington, D.C. refresh daily.

How many operators does momondo search for flights from Louisville Intl Airport to Washington, D.C.?

There are 4 operators available for flights from Louisville Intl Airport to Washington, D.C. as of March 2026.

How old do you have to be to fly from Louisville Intl Airport to Washington, D.C.?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Louisville Intl Airport to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$104 Cheap Flights from Louisville to Washington, D.C. in 2026

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:48 pm - 8:43 am

SDF

BWI

12h 55m

1 stop

8:52 pm - 5:04 pm

BWI

SDF

20h 12m

1 stop

$200Multiple Airlines

Fri, Apr 17 - Sun, Apr 19

6:00 am - 7:44 am

SDF

DCA

1h 44mnonstop

12:10 pm - 2:02 pm

DCA

SDF

1h 52mnonstop

$207American Airlines

Wed, May 20 - Wed, May 27

5:50 am - 7:30 am

SDF

IAD

1h 40mnonstop

12:48 pm - 2:37 pm

IAD

SDF

1h 49mnonstop

$207United Airlines

Wed, May 20 - Wed, May 27

10:11 am - 11:59 am

SDF

DCA

1h 48mnonstop

7:45 pm - 9:41 pm

DCA

SDF

1h 56mnonstop

$218American Airlines

Thu, May 21 - Wed, May 27

6:20 am - 7:55 am

SDF

BWI

1h 35mnonstop

9:55 pm - 11:45 pm

BWI

SDF

1h 50mnonstop

$222Southwest

Tue, Apr 21 - Thu, Apr 23

6:00 am - 7:44 am

SDF

DCA

1h 44mnonstop

7:38 am - 9:38 am

DCA

SDF

2h 00mnonstop

$228American Airlines

Wed, Apr 22 - Sun, May 10

6:00 am - 7:35 am

SDF

IAD

1h 35mnonstop

8:31 am - 10:23 am

IAD

SDF

1h 52mnonstop

$229United Airlines

Fri, May 29 - Mon, Jun 1

6:00 am - 7:44 am

SDF

DCA

1h 44mnonstop

7:38 am - 9:38 am

DCA

SDF

2h 00mnonstop

$229American Airlines

Thu, Apr 16 - Sun, Apr 19

3:45 pm - 5:25 pm

SDF

BWI

1h 40mnonstop

6:15 am - 11:40 am

BWI

SDF

5h 25m

1 stop

$232Southwest

Tue, Apr 21 - Thu, Apr 23

10:46 am - 4:15 pm

SDF

IAD

5h 29m

1 stop

6:00 am - 10:26 am

IAD

SDF

4h 26m

1 stop

$249Delta

Thu, Apr 16 - Sun, Apr 19

United Airlines flights from Louisville to Washington, D.C.

Our best United Airlines deals on Louisville to Washington, D.C. flight tickets

United Airlines

May 20

SDF5:50 amLouisville Intl

1h 40m

IAD7:30 amWashington, D.C. Dulles Intl

May 27

IAD12:48 pmWashington, D.C. Dulles Intl

1h 49m

SDF2:37 pmLouisville Intl

$207

United Airlines

May 29

SDF6:00 amLouisville Intl

1h 35m

IAD7:35 amWashington, D.C. Dulles Intl

May 31

IAD8:31 amWashington, D.C. Dulles Intl

1h 52m

SDF10:23 amLouisville Intl

$229

United Airlines

May 15

SDF9:55 amLouisville Intl

1h 40m

IAD11:35 amWashington, D.C. Dulles Intl

May 17

IAD10:08 pmWashington, D.C. Dulles Intl

1h 51m

SDF11:59 pmLouisville Intl

$244

Delta flights from Louisville to Washington, D.C.

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

Delta

Apr 16

SDF10:46 amLouisville Intl

5h 29m

1 stop

IAD4:15 pmWashington, D.C. Dulles Intl

Apr 19

IAD6:00 amWashington, D.C. Dulles Intl

4h 26m

1 stop

SDF10:26 amLouisville Intl

$249

Delta

May 29

SDF7:59 pmLouisville Intl

4h 52m

1 stop

IAD12:51 amWashington, D.C. Dulles Intl

May 31

IAD6:08 amWashington, D.C. Dulles Intl

4h 17m

1 stop

SDF10:25 amLouisville Intl

$269

Delta

Apr 15

SDF7:05 amLouisville Intl

4h 41m

1 stop

IAD11:46 amWashington, D.C. Dulles Intl

Apr 22

IAD12:37 pmWashington, D.C. Dulles Intl

4h 05m

1 stop

SDF4:42 pmLouisville Intl

$275

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleBaltimore

SDF - BWI

SDFBWI

Louisville Intl

Fri 4/17

7:48 pm-8:43 am

1 stop12h 55m

Baltimore/Washington

Sun 4/19

8:52 pm-5:04 pm

1 stop20h 12m

$200

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Wed 5/20

6:00 am-7:44 am

Nonstop1h 44m

Washington, D.C. Reagan-National

Wed 5/27

12:10 pm-2:02 pm

Nonstop1h 52m

$207

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Wed 5/20

5:50 am-7:30 am

Nonstop1h 40m

Washington, D.C. Dulles Intl

Wed 5/27

12:48 pm-2:37 pm

Nonstop1h 49m

$207

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Thu 5/21

10:11 am-11:59 am

Nonstop1h 48m

Washington, D.C. Reagan-National

Wed 5/27

7:45 pm-9:41 pm

Nonstop1h 56m

$218

Quickest round-trip

LouisvilleBaltimore

SDF - BWI

SDFBWI

Louisville Intl

Tue 4/21

6:20 am-7:55 am

Nonstop1h 35m

Baltimore/Washington

Thu 4/23

9:55 pm-11:45 pm

Nonstop1h 50m

$222

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Wed 4/22

6:00 am-7:44 am

Nonstop1h 44m

Washington, D.C. Reagan-National

Sun 5/10

7:38 am-9:38 am

Nonstop2h 00m

$228

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Fri 5/29

6:00 am-7:35 am

Nonstop1h 35m

Washington, D.C. Dulles Intl

Mon 6/1

8:31 am-10:23 am

Nonstop1h 52m

$229

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Thu 4/16

6:00 am-7:44 am

Nonstop1h 44m

Washington, D.C. Reagan-National

Sun 4/19

7:38 am-9:38 am

Nonstop2h 00m

$229

LouisvilleBaltimore

SDF - BWI

SDFBWI

Louisville Intl

Tue 4/21

3:45 pm-5:25 pm

Nonstop1h 40m

Baltimore/Washington

Thu 4/23

6:15 am-11:40 am

1 stop5h 25m

$232

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Thu 4/16

10:46 am-4:15 pm

1 stop5h 29m

Washington, D.C. Dulles Intl

Sun 4/19

6:00 am-10:26 am

1 stop4h 26m

$249

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 Louisville to Washington, D.C.

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 cheapest month to fly to Washington, D.C.?

The month of November is, on average, the cheapest month to fly to Washington, D.C. from Louisville, with most prices found around $234. If you’re not able to fly to Washington, D.C. in November, then June is your next best option. Flight prices from Louisville to Washington, D.C. during June average around $239.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Louisville is on a Friday. momondo users have found tickets for Friday departures for as low as $339. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Louisville to Washington, D.C. for around $592.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the evening is the cheapest time of day to fly from Louisville to Washington, D.C. when you can find flight prices for as low as $303. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $981. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

How far in advance should I book a flight to Washington, D.C.?

You are more likely to see cheaper flights to Washington, D.C. from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $322 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Louisville for as low as $198 on momondo.

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

There are 4 cabin classes available to choose from on Louisville Intl to Washington, D.C. 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 Louisville to Washington, D.C. flights?

No. A direct flight is the cheapest option for a flight between Louisville to Washington, D.C..

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

As of March 2026, prices for Louisville to Washington, D.C. flights are approximately 75% more expensive when compared to flights at the same time last year.

When to book flights from Louisville to Washington, D.C.

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

Estimated round-trip price

Cheap Louisville to Washington, D.C. (SDF to WAS) flight deals and tips

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

Best Price Found	$168
Fastest flight time	1h 30m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

The best one-way flight to Washington, D.C. from Louisville in the past 72 hours is $168. The best round-trip flight deal from Louisville to Washington, D.C. found on momondo in the last 72 hours is $258.

The fastest flight from Louisville to Washington, D.C. takes 1h 30m

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

There are 2 airports in Washington, D.C.. From Louisville there are direct flights to Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD).

Search flight deals

How far is Louisville Intl to Washington, D.C. by plane?
Louisville Intl and Washington, D.C. are 472.6 mi apart from one another. By plane, this route typically takes 1h 30m.
When did momondo last update prices for flights from Louisville Intl Airport to Washington, D.C.?
Prices for flights from Louisville Intl Airport to Washington, D.C. refresh daily.
How many operators does momondo search for flights from Louisville Intl Airport to Washington, D.C.?
There are 4 operators available for flights from Louisville Intl Airport to Washington, D.C. as of March 2026.
How old do you have to be to fly from Louisville Intl Airport to Washington, D.C.?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Louisville Intl Airport to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Louisville to Washington, D.C.?
Based on momondo bookings for flights between Louisville and Washington, D.C., the leading plane model is Embraer 175, making up 23.49% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 18.67%, Canadair (Bombardier) Regional Jet 900 with 16.64%, and Boeing 737 MAX 8 with 9.86%.
What is the most popular airline from Louisville to Washington, D.C.?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to Washington, D.C. is American Airlines (58% of total bookings). The next most popular airlines are United Airlines (34%) and Southwest (7%).

Best airlines flying from Louisville to Washington, D.C.

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

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $179	Free Cancellation	Rating 8.0 4,318 reviews	Search Southwest flights
American Airlines	PriceFrom $189	Free Cancellation	Rating 7.1 11,467 reviews	Search American Airlines flights
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 9,428 reviews	Search United Airlines flights
Delta	PriceFrom $198	Free Cancellation	Rating 7.9 8,296 reviews	Search Delta flights

Southwest Flights From Louisville to Washington, D.C.
Across 1 Southwest flight from Louisville to Washington, D.C. this week, the average price was $332, with the best Southwest deals starting from $179 round-trip. 4,318 users have rated Southwest on momondo, with an average score of 8.0/10.
United Airlines Flights From Louisville to Washington, D.C.
The best United Airlines deal for Louisville to Washington, D.C. flight tickets found on momondo in the last 72 hours was $189, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $287 round-trip. United Airlines operates 14 flights out of Louisville into Washington, D.C. in an average week, so prices vary by time and availability. 9,428 United Airlines reviews by users on momondo have scored the airline at 7.4/10.

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Colonial Beach

Laurel

Towson

Gaithersburg

Silver Spring

Fredericksburg

Rockville

Tysons

Manassas

Springfield

Linthicum Heights

Bethesda

Fairfax

Reston

Why use momondo?

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

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 Louisville to Washington, D.C. for you.

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

momondo does allow users to show only those flights to Washington, D.C. from Louisville which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Louisville to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Washington, D.C. from Louisville. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Washington, D.C. trip

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Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from Louisville to Washington, D.C. from $104

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Washington, D.C. departing on 4/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Louisville to Washington, D.C.

Our best United Airlines deals on Louisville to Washington, D.C. flight tickets

Delta flights from Louisville to Washington, D.C.

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

momondo Fare Finder

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

See travel insights to Washington, D.C. from

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

What is the cheapest month to fly to Washington, D.C.?

What is the cheapest day to depart on your flight to Washington, D.C.?

What is the cheapest time of day to depart on your flight to Washington, D.C.?

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

How far in advance should I book a flight to Washington, D.C.?

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

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

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

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

What airlines fly to Washington, D.C.?

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

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

When to book flights from Louisville to Washington, D.C.

Cheap Louisville to Washington, D.C. (SDF to WAS) flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Washington, D.C.

Best airlines flying from Louisville to Washington, D.C.

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

Southwest Flights From Louisville to Washington, D.C.

United Airlines Flights From Louisville to Washington, D.C.

Traveling to a place near Washington, D.C.?

Why use momondo?

An easier way to manage your Washington, D.C. trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.

Fly your favorite airline to Washington, D.C.

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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