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

Southwest and United Airlines 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 35% 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 January 2026, there are 57 flights per week flying from Louisville to Washington, D.C.. The most common day of the week flights depart is Mon, with 19% 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 8 per day as of January 2026. The most frequent departure time is 9:00AM, with 55% 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 January 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.

$87 Cheap Flights from Louisville to Washington, D.C. in 2026

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One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:15 am - 8:00 am

SDF

DCA

1h 45mnonstop

7:41 am - 9:45 am

DCA

SDF

2h 04mnonstop

$189American Airlines

Wed, Jun 10 - Tue, Jun 16

2:35 pm - 4:13 pm

SDF

IAD

1h 38mnonstop

12:50 pm - 2:47 pm

IAD

SDF

1h 57mnonstop

$189United Airlines

Tue, Feb 24 - Tue, Mar 3

3:33 pm - 9:06 am

SDF

BWI

17h 33m

1 stop

6:20 am - 2:38 pm

BWI

SDF

8h 18m

1 stop

$190Spirit Airlines

Tue, Feb 17 - Tue, Feb 24

3:33 pm - 9:06 am

SDF

BWI

17h 33m

1 stop

6:20 am - 2:38 pm

BWI

SDF

8h 18m

1 stop

$191Spirit Airlines

Tue, Feb 24 - Tue, Mar 3

2:35 pm - 4:13 pm

SDF

IAD

1h 38mnonstop

12:50 pm - 2:47 pm

IAD

SDF

1h 57mnonstop

$196United Airlines

Thu, Mar 26 - Tue, Apr 7

6:00 am - 7:42 am

SDF

DCA

1h 42mnonstop

8:40 am - 10:42 am

DCA

SDF

2h 02mnonstop

$204American Airlines

Fri, Feb 27 - Sun, Mar 1

7:37 pm - 11:39 pm

SDF

DCA

4h 02m

1 stop

9:40 am - 1:37 pm

DCA

SDF

3h 57m

1 stop

$209Delta

Fri, Mar 13 - Mon, Mar 16

7:51 pm - 12:21 am

SDF

IAD

4h 30m

1 stop

7:20 am - 11:58 am

IAD

SDF

4h 38m

1 stop

$209Delta

Fri, Mar 6 - Sun, Mar 8

6:15 pm - 10:50 pm

SDF

DCA

4h 35m

1 stop

3:25 pm - 10:15 pm

DCA

SDF

6h 50m

2 stops

$214Southwest

Mon, Mar 30 - Tue, Mar 31

6:35 am - 4:20 pm

SDF

DCA

9h 45m

2 stops

7:25 am - 2:45 pm

DCA

SDF

7h 20m

2 stops

$225Southwest

Thu, Mar 26 - Tue, Apr 7

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

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

United Airlines

Feb 24

SDF2:35 pmLouisville Intl

1h 38m

IAD4:13 pmWashington, D.C. Dulles Intl

Mar 3

IAD12:50 pmWashington, D.C. Dulles Intl

1h 57m

SDF2:47 pmLouisville Intl

$189

United Airlines

Mar 26

SDF2:35 pmLouisville Intl

1h 38m

IAD4:13 pmWashington, D.C. Dulles Intl

Apr 7

IAD12:50 pmWashington, D.C. Dulles Intl

1h 57m

SDF2:47 pmLouisville Intl

$196

United Airlines

Jul 16

SDF6:00 amLouisville Intl

1h 35m

IAD7:35 amWashington, D.C. Dulles Intl

Jul 19

IAD8:30 amWashington, D.C. Dulles Intl

1h 47m

SDF10:17 amLouisville Intl

$200

Delta flights from Louisville to Washington, D.C.

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

Delta

Mar 6

SDF7:51 pmLouisville Intl

4h 30m

1 stop

IAD12:21 amWashington, D.C. Dulles Intl

Mar 8

IAD7:20 amWashington, D.C. Dulles Intl

4h 38m

1 stop

SDF11:58 amLouisville Intl

$209

Delta

Feb 13

SDF3:33 pmLouisville Intl

7h 00m

1 stop

DCA10:33 pmWashington, D.C. Reagan-National

Feb 15

DCA6:05 amWashington, D.C. Reagan-National

3h 59m

1 stop

SDF10:04 amLouisville Intl

$224

Delta

Mar 29

SDF7:45 amLouisville Intl

3h 47m

1 stop

IAD11:32 amWashington, D.C. Dulles Intl

Apr 5

IAD7:20 amWashington, D.C. Dulles Intl

4h 38m

1 stop

SDF11:58 amLouisville Intl

$234

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

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Wed 6/10

6:15 am-8:00 am

Nonstop1h 45m

Washington, D.C. Reagan-National

Tue 6/16

7:41 am-9:45 am

Nonstop2h 04m

$189

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Tue 2/24

2:35 pm-4:13 pm

Nonstop1h 38m

Washington, D.C. Dulles Intl

Tue 3/3

12:50 pm-2:47 pm

Nonstop1h 57m

$189

LouisvilleBaltimore

SDF - BWI

SDFBWI

Louisville Intl

Tue 2/17

3:33 pm-9:06 am

1 stop17h 33m

Baltimore/Washington

Tue 2/24

6:20 am-2:38 pm

1 stop8h 18m

$190

LouisvilleBaltimore

SDF - BWI

SDFBWI

Louisville Intl

Tue 2/24

3:33 pm-9:06 am

1 stop17h 33m

Baltimore/Washington

Tue 3/3

6:20 am-2:38 pm

1 stop8h 18m

$191

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Thu 3/26

2:35 pm-4:13 pm

Nonstop1h 38m

Washington, D.C. Dulles Intl

Tue 4/7

12:50 pm-2:47 pm

Nonstop1h 57m

$196

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Fri 2/27

6:00 am-7:42 am

Nonstop1h 42m

Washington, D.C. Reagan-National

Sun 3/1

8:40 am-10:42 am

Nonstop2h 02m

$204

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Fri 3/13

7:37 pm-11:39 pm

1 stop4h 02m

Washington, D.C. Reagan-National

Mon 3/16

9:40 am-1:37 pm

1 stop3h 57m

$209

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Fri 3/6

7:51 pm-12:21 am

1 stop4h 30m

Washington, D.C. Dulles Intl

Sun 3/8

7:20 am-11:58 am

1 stop4h 38m

$209

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Mon 3/30

6:15 pm-10:50 pm

1 stop4h 35m

Washington, D.C. Reagan-National

Tue 3/31

3:25 pm-10:15 pm

2 stops6h 50m

$214

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Thu 3/26

6:35 am-4:20 pm

2 stops9h 45m

Washington, D.C. Reagan-National

Tue 4/7

7:25 am-2:45 pm

2 stops7h 20m

$225

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 $351. 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 $616.

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 $299. 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 $998. 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 $302 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 $206 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?

You could potentially save up to 8% on your flight if you consider stops on a Louisville to Washington, D.C. flight.

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

As of January 2026, prices for Louisville to Washington, D.C. flights are approximately 72% 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	$176
Fastest flight time	1h 35m
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 $176. The best round-trip flight deal from Louisville to Washington, D.C. found on momondo in the last 72 hours is $223.

The fastest flight from Louisville to Washington, D.C. takes 1h 35m

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 35m.
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 January 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 20.91% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 19.22%, Canadair (Bombardier) Regional Jet 900 with 15.18%, and Canadair (Bombardier) Regional Jet 700 with 12.82%.
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 (57% of total bookings). The next most popular airlines are United Airlines (36%) and Southwest (8%).

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 4,267 reviews	Search Southwest flights
American Airlines	PriceFrom $186	Free Cancellation	Rating 7.2 11,201 reviews	Search American Airlines flights
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 9,212 reviews	Search United Airlines flights
Delta	PriceFrom $198	Free Cancellation	Rating 7.9 8,124 reviews	Search Delta flights

United Airlines Flights From Louisville to Washington, D.C.
Across 14 United Airlines flights from Louisville to Washington, D.C. this week, the average price was $290, with the best United Airlines deals starting from $189 round-trip. 9,212 users have rated United Airlines on momondo, with an average score of 7.4/10.
American Airlines Flights From Louisville to Washington, D.C.
The best American Airlines deal for Louisville to Washington, D.C. flight tickets found on momondo in the last 72 hours was $186, round-trip. It should be noted that an average American Airlines flight deal for this route in this time was higher, at $335 round-trip. American Airlines operates 9 flights out of Louisville into Washington, D.C. in an average week, so prices vary by time and availability. 11,201 American Airlines reviews by users on momondo have scored the airline at 7.2/10.

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Tysons

Laurel

Colonial Beach

Silver Spring

Towson

Fredericksburg

Gaithersburg

Rockville

Manassas

Springfield

Fairfax

Linthicum Heights

Bethesda

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

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.

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Find better results for your trip to the United States

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

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Popular cities in the United States

Flights to New Yorkfrom $38

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Flights to Orlandofrom $41

Flights to San Franciscofrom $56

Flights to Las Vegasfrom $40

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Flights to Dallasfrom $56

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Cheap flights from Louisville to Washington, D.C. from $87

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 2/23. 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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Big names and deals

Filter for what you want

Filter for what you want

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Price Alerts

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

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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?

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.?

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?

You could potentially save up to 8% on your flight if you consider stops on a Louisville to Washington, D.C. flight.

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

As of January 2026, prices for Louisville to Washington, D.C. flights are approximately 72% more expensive when compared to flights at the same time last year.

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

Southwest and United Airlines are the most popular carriers operating 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?

The number of flights available between Louisville and Washington, D.C. is 8 per day as of January 2026. The most frequent departure time is 9:00AM, with 55% of daily flights leaving at noon.

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

As of January 2026, there are 57 flights per week flying from Louisville to Washington, D.C.. The most common day of the week flights depart is Mon, with 19% of flights taking off on this day.

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.

How far is Louisville Intl to Washington, D.C. by plane?

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

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

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

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

What is the most popular plane model from Louisville to Washington, D.C.?

What is the most popular airline from Louisville to 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

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

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

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

Why use momondo?

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

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

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

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

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.