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

Southwest, at $179, was found to be the cheapest airline from Louisville to Washington, D.C..Alternate airlines to your destination round-trip include Spirit Airlines and American Airlines. You may be able to fly from Louisville to Washington, D.C. for 30% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from Louisville to Washington, D.C. one-way?

One-way options have recently been found by users for as low as $78 on Spirit Airlines. Other airlines that offer cheap prices include Southwest from $90 and American Airlines from $90 one-way.

What are the most popular routes from Louisville to Washington, D.C.?

Most travelers choose Louisville Intl - Washington, D.C. Dulles Intl, Louisville Intl - Baltimore/Washington or Louisville Intl - Washington, D.C. Reagan-National when deciding on the best route from Louisville to Washington, D.C..

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

Looking for the cheapest flight from Louisville to Washington, D.C.? While on average our users pay $1,480, our data indicates the cheapest price to be $159. The most popular route (Louisville Intl - Washington, D.C. Dulles Intl), is priced around $179.

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

No one likes to see their flight delayed. When booking a flight from Louisville to Washington, D.C. consider choosing Copa Airlines (93%), Republic Airways (93%) or Air Canada (86%) as they are the most reliable in getting you off to your destination on time.

What is the cheapest day to fly round-trip from Louisville to Washington, D.C.?

Flights from Louisville to Washington, D.C. are found to be more expensive on Monday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C..

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

To save up to 84% on this flight, we recommend booking at least 42 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Louisville to Washington, D.C. from $267 1-2 weeks out and tickets from $373 for flights departing within the next 72 hours.

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

August can be a great time to fly to Washington, D.C. from Louisville with a flight ticket averaging about $257. Cheapflights users have found deals in the month of August for as cheap as $180. The most expensive prices can be found in the month of January.

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

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

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

Most people fly from Louisville Intl (SDF) if they book a flight from Louisville to Washington, D.C.. On average, Louisville Intl has 9 outbound flights to Washington, D.C. per day from 5 airlines. Louisville Intl is conveniently located just 5.3 mi from Louisville’s city center.

Can I find deals for flights from Louisville to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Louisville to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Louisville to Washington, D.C.?

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

Can I find deals for business class flights from Louisville to Washington, D.C.?

Yes. Cheapflights offers flight deals from Louisville to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$78+ Save on Flights from Louisville to Washington, D.C.

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Find cheap flights from Louisville to Washington, D.C. with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Louisville Intl to Washington, D.C. are usually found in August or May, booked 62 days in advance, depart on a Friday or Wednesday and return on a Saturday

Cheap flight deals from Louisville to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$179 (Southwest)
One-way from	$78 (Mytrip)
Popular in	January
Cheapest in	August
Average price	$274
Good round-trip deal	$255 or less
Good one-way deal	$175 or less

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

Search Deals

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

Search Deals

From Louisville Intl to Washington, D.C. (WAS)

Search Deals

One-way flight from Louisville Intl to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 1% potential increase in price ($2 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

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

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

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Find flight deals from Louisville to Washington, D.C.

Cheapest flights from Louisville to Washington, D.C.
Explore the most affordable flight options available from Louisville to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Mon 4/1412:05 pmSDF - BWI

Nonstop1h 35mSouthwest

Wed 4/168:50 pmBWI - SDF

Nonstop1h 45mSouthwest

Deal found 3/24

$179

Tue 6/107:30 pmSDF - DCA

Nonstop1h 44mAmerican Airlines

Sat 6/148:00 pmDCA - SDF

Nonstop1h 52mAmerican Airlines

Deal found 3/25

$189

Sat 5/36:00 amSDF - IAD

Nonstop1h 34mUnited Airlines

Mon 5/53:36 pmIAD - SDF

1 stop6h 02mUnited Airlines

Deal found 3/24

$189

Mon 4/146:19 pmSDF - BWI

1 stop16h 18mMultiple Airlines

Wed 4/167:55 pmBWI - SDF

1 stop26h 22mMultiple Airlines

Deal found 3/24

$192

Tue 4/225:45 amSDF - BWI

2 stops27h 14mSpirit Airlines

Tue 4/2910:27 amBWI - SDF

1 stop11h 50mSpirit Airlines

Deal found 3/24

$199

Mon 4/142:37 pmSDF - DCA

1 stop4h 58mDelta

Wed 4/166:00 amDCA - SDF

1 stop4h 03mDelta

Deal found 3/23

$199

Mon 4/144:59 pmSDF - IAD

1 stop4h 24mDelta

Wed 4/1610:15 amIAD - SDF

1 stop5h 39mDelta

Deal found 3/24

$199

Mon 4/144:05 pmSDF - DCA

1 stop6h 00mSouthwest

Wed 4/1611:35 amDCA - SDF

2 stops9h 05mSouthwest

Deal found 3/24

$204

Sat 5/38:14 pmSDF - BWI

1 stop4h 10mAmerican Airlines

Mon 5/58:17 pmBWI - SDF

1 stop4h 01mAmerican Airlines

Deal found 3/24

$214

Thu 5/11:32 pmSDF - IAD

2 stops31h 25mMultiple Airlines

Sun 5/48:58 pmIAD - SDF

1 stop11h 33mMultiple Airlines

Deal found 3/24

$266

Fri 4/2512:55 pmSDF - BWI

1 stop5h 50mDelta

Sun 4/275:50 amBWI - SDF

1 stop4h 13mDelta

Deal found 3/24

$269

Wed 4/307:29 amSDF - BWI

1 stop6h 49mUnited Airlines

Sun 5/46:45 amBWI - SDF

1 stop6h 20mUnited Airlines

Deal found 3/24

$314

Best flights from Louisville to Washington, D.C.
Discover carefully curated flight deals from Louisville to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Mon 4/146:15 amSDF - BWI

Nonstop1h 35mSouthwest

Wed 4/168:50 pmBWI - SDF

Nonstop1h 45mSouthwest

Deal found 3/24

$179

Wed 5/75:05 amSDF - BWI

1 stop9h 28mSpirit Airlines

Sun 5/186:35 pmBWI - SDF

1 stop18h 37mSpirit Airlines

Deal found 3/23

$188

Tue 6/107:30 pmSDF - DCA

Nonstop1h 44mAmerican Airlines

Sat 6/148:00 pmDCA - SDF

Nonstop1h 52mAmerican Airlines

Deal found 3/25

$189

Sat 5/36:00 amSDF - IAD

Nonstop1h 34mUnited Airlines

Mon 5/53:36 pmIAD - SDF

1 stop6h 02mUnited Airlines

Deal found 3/24

$189

Mon 4/146:19 pmSDF - BWI

1 stop16h 18mMultiple Airlines

Wed 4/169:32 pmBWI - SDF

1 stop24h 45mMultiple Airlines

Deal found 3/24

$192

Thu 4/242:37 pmSDF - BWI

1 stop4h 08mDelta

Tue 4/295:50 amBWI - SDF

1 stop6h 00mDelta

Deal found 3/23

$199

Sat 7/263:36 pmSDF - IAD

2 stops19h 32mAllegiant Air

Thu 8/73:53 pmIAD - SDF

1 stop21h 43mAllegiant Air

Deal found 3/24

$320

Mon 4/142:37 pmSDF - DCA

1 stop4h 58mDelta

Wed 4/166:00 amDCA - SDF

1 stop4h 03mDelta

Deal found 3/23

$199

Mon 4/144:05 pmSDF - DCA

1 stop6h 00mSouthwest

Wed 4/1611:35 amDCA - SDF

2 stops9h 05mSouthwest

Deal found 3/24

$204

Sat 5/178:15 pmSDF - BWI

1 stop3h 38mAmerican Airlines

Tue 5/205:00 amBWI - SDF

1 stop6h 41mAmerican Airlines

Deal found 3/23

$214

Mon 4/144:59 pmSDF - IAD

1 stop4h 24mDelta

Thu 4/177:35 amIAD - SDF

1 stop4h 15mDelta

Deal found 3/24

$199

Thu 5/11:32 pmSDF - IAD

2 stops31h 25mMultiple Airlines

Sun 5/48:58 pmIAD - SDF

1 stop11h 33mMultiple Airlines

Deal found 3/24

$266

Last-minute flights from Louisville to Washington, D.C.
Discover last-minute flight deals from Louisville to Washington, D.C.. Data last updated March 25, 2025 and is based on user searches.

Mon 3/315:05 pmSDF - DCA

1 stop5h 15mSouthwest

Wed 4/23:35 pmDCA - SDF

1 stop7h 10mSouthwest

Deal found 3/23

$399

Mon 3/3112:56 pmSDF - DCA

1 stop8h 21mAmerican Airlines

Tue 4/17:54 pmDCA - SDF

Nonstop2h 05mAmerican Airlines

Deal found 3/24

$447

Mon 3/3112:56 pmSDF - IAD

2 stops11h 02mAmerican Airlines

Tue 4/15:27 pmIAD - SDF

1 stop7h 07mAmerican Airlines

Deal found 3/24

$462

Mon 3/314:59 pmSDF - IAD

1 stop4h 25mDelta

Tue 4/15:14 pmIAD - SDF

1 stop6h 43mDelta

Deal found 3/24

$474

Mon 3/315:30 amSDF - BWI

1 stop5h 15mSouthwest

Wed 4/211:20 amBWI - SDF

Nonstop1h 50mSouthwest

Deal found 3/23

$527

Tue 4/12:47 pmSDF - DCA

1 stop4h 55mUnited Airlines

Wed 4/23:30 pmDCA - SDF

1 stop4h 59mUnited Airlines

Deal found 3/23

$435

Tue 4/17:29 amSDF - BWI

1 stop6h 49mUnited Airlines

Wed 4/25:07 pmBWI - SDF

1 stop5h 23mUnited Airlines

Deal found 3/23

$517

Wed 4/22:06 pmSDF - IAD

Nonstop1h 38mUnited Airlines

Sat 4/512:55 pmIAD - SDF

Nonstop1h 45mUnited Airlines

Deal found 3/24

$364

Wed 4/21:19 pmSDF - DCA

1 stop6h 00mDelta

Fri 4/47:59 amDCA - SDF

1 stop3h 59mDelta

Deal found 3/24

$474

Wed 4/21:07 pmSDF - BWI

1 stop6h 53mDelta

Fri 4/46:00 amBWI - SDF

1 stop5h 22mDelta

Deal found 3/24

$698

Fri 4/46:19 pmSDF - BWI

1 stop14h 56mMultiple Airlines

Sun 4/63:13 pmBWI - SDF

1 stop21h 14mMultiple Airlines

Deal found 3/24

$281

Fri 4/46:00 amSDF - BWI

2 stops19h 05mSpirit Airlines

Sun 4/63:13 pmBWI - SDF

1 stop25h 25mSpirit Airlines

Deal found 3/24

$302

One-way flights from Louisville to Washington, D.C.
Search for one-way flight options from Louisville to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Wed 4/95:45 amSDF - BWI

1 stop13h 05mSpirit Airlines

Deal found 3/24

$78

Mon 4/76:19 pmSDF - BWI

1 stop27h 31mMultiple Airlines

Deal found 3/24

$87

Wed 4/236:50 amSDF - BWI

Nonstop1h 35mSouthwest

Deal found 3/24

$90

Thu 4/247:21 pmSDF - DCA

Nonstop1h 39mAmerican Airlines

Deal found 3/24

$90

Sat 7/196:00 amSDF - IAD

Nonstop1h 35mUnited Airlines

Deal found 3/24

$90

Wed 5/288:00 pmSDF - BWI

1 stop4h 48mDelta

Deal found 3/25

$99

Tue 4/224:46 pmSDF - DCA

1 stop6h 04mDelta

Deal found 3/25

$100

Mon 4/287:00 pmSDF - IAD

1 stop5h 28mDelta

Deal found 3/24

$100

Fri 4/115:50 amSDF - DCA

1 stop5h 20mSouthwest

Deal found 3/24

$110

Sun 4/134:15 pmSDF - IAD

1 stop17h 02mAllegiant Air

Deal found 3/24

$121

Thu 4/246:45 amSDF - DCA

1 stop5h 51mUnited Airlines

Deal found 3/25

$130

Thu 5/811:23 amSDF - IAD

2 stops33h 34mMultiple Airlines

Deal found 3/24

$137

Cheapflights 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

LouisvilleBaltimore

SDF - BWI

SDFBWI

Louisville Intl

Mon 4/14

6:15 am-7:50 am

Nonstop1h 35m

Baltimore/Washington

Wed 4/16

8:50 pm-10:35 pm

Nonstop1h 45m

$179

LouisvilleBaltimore

SDF - BWI

SDFBWI

Louisville Intl

Wed 5/7

5:05 am-2:33 pm

1 stop9h 28m

Baltimore/Washington

Sun 5/18

6:35 pm-1:12 pm

1 stop18h 37m

$188

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Tue 6/10

7:30 pm-9:14 pm

Nonstop1h 44m

Washington, D.C. Reagan-National

Sat 6/14

8:00 pm-9:52 pm

Nonstop1h 52m

$189

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Sat 5/3

6:00 am-7:34 am

Nonstop1h 34m

Washington, D.C. Dulles Intl

Mon 5/5

3:36 pm-9:38 pm

1 stop6h 02m

$189

LouisvilleBaltimore

SDF - BWI

SDFBWI

Louisville Intl

Mon 4/14

6:19 pm-10:37 am

1 stop16h 18m

Baltimore/Washington

Wed 4/16

9:32 pm-10:17 pm

1 stop24h 45m

$192

LouisvilleBaltimore

SDF - BWI

SDFBWI

Louisville Intl

Thu 4/24

2:37 pm-6:45 pm

1 stop4h 08m

Baltimore/Washington

Tue 4/29

5:50 am-11:50 am

1 stop6h 00m

$199

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Mon 4/14

2:37 pm-7:35 pm

1 stop4h 58m

Washington, D.C. Reagan-National

Wed 4/16

6:00 am-10:03 am

1 stop4h 03m

$199

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Mon 4/14

4:59 pm-9:23 pm

1 stop4h 24m

Washington, D.C. Dulles Intl

Wed 4/16

10:15 am-3:54 pm

1 stop5h 39m

$199

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Mon 4/14

4:05 pm-10:05 pm

1 stop6h 00m

Washington, D.C. Reagan-National

Wed 4/16

11:35 am-8:40 pm

2 stops9h 05m

$204

LouisvilleBaltimore

SDF - BWI

SDFBWI

Louisville Intl

Sat 5/17

8:15 pm-11:53 pm

1 stop3h 38m

Baltimore/Washington

Tue 5/20

5:00 am-11:41 am

1 stop6h 41m

$214

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 29 results

Compare providers for flights from Louisville to Washington, D.C.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to Washington, D.C. in March.

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

The best insider tips for Louisville to Washington, D.C. flights

Cheapflights partnered with top experts to bring you the best recommendations for your Louisville to Washington, D.C. trip

Airlines

Lufthansa

Lufthansa's Economy Flex includes preferred seating and same-day flight changes.

Lufthansa offers a Free Neighbor Seat for extra space on long-haul flights.

Read more about Lufthansaby Blane Bachelor

United Airlines

Basic Economy on United allows no carry-on bags, only a personal item under the seat.

Prepay checked bags on United at least 24 hours before to save on fees.

Read more about United Airlinesby Harriet Baskas

Our travel experts

Blane Bachelor

Expert on Lufthansa

Harriet Baskas

Expert on United Airlines

Best time to book a flight from Louisville to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Louisville with our price prediction graph.

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 Louisville to Washington, D.C.

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

Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from Louisville to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Louisville to Washington, D.C. (average of $309). Flying from Louisville to Washington, D.C. in June is currently the most expensive (average of $387). 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 SDF to WAS?

Unlike at noon, when flights are generally more expensive, you can save up to 73% on flights from Louisville to Washington, D.C. by exploring options for tickets in the evening.

What is the cheapest day to fly from Louisville to Washington, D.C.?

Travelers seeking maximum savings on their Louisville to Washington, D.C. flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Louisville to Washington, D.C.

The most flights from SDF to WAS are scheduled on a Monday (13 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Washington, D.C. by month

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

If weather is an important factor for your trip to Washington, D.C., 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Washington, D.C.

Read reviews from past customers who have flown Southwest, Delta and United Airlines from Louisville to Washington, D.C.. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.0

Very good

4,272 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta

8.0

Very good

7,890 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines

7.4

Good

8,605 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Allegiant Air

7.3

Good

730 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

What airport do you fly from for flights from Louisville to Washington, D.C.?
Most people fly from Louisville Intl (SDF) if they book a flight from Louisville to Washington, D.C.. On average, Louisville Intl has 9 outbound flights to Washington, D.C. per day from 5 airlines. Louisville Intl is conveniently located just 5.3 mi from Louisville’s city center.
What are the cheapest airlines flying from Louisville to Washington, D.C. round-trip?
Southwest, at $179, was found to be the cheapest airline from Louisville to Washington, D.C..Alternate airlines to your destination round-trip include Spirit Airlines and American Airlines. You may be able to fly from Louisville to Washington, D.C. for 30% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Louisville to Washington, D.C. one-way?
One-way options have recently been found by users for as low as $78 on Spirit Airlines. Other airlines that offer cheap prices include Southwest from $90 and American Airlines from $90 one-way.
What are the most popular routes from Louisville to Washington, D.C.?
Most travelers choose Louisville Intl - Washington, D.C. Dulles Intl, Louisville Intl - Baltimore/Washington or Louisville Intl - Washington, D.C. Reagan-National when deciding on the best route from Louisville to Washington, D.C..
What are the most reliable airlines from Louisville to Washington, D.C.?
No one likes to see their flight delayed. When booking a flight from Louisville to Washington, D.C. consider choosing Copa Airlines (93%), Republic Airways (93%) or Air Canada (86%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Louisville to Washington, D.C.?
Looking for the cheapest flight from Louisville to Washington, D.C.? While on average our users pay $1,480, our data indicates the cheapest price to be $159. The most popular route (Louisville Intl - Washington, D.C. Dulles Intl), is priced around $179.
Can I find deals for flights from Louisville to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Louisville to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Louisville to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to Washington, D.C..
Can I find deals for business class flights from Louisville to Washington, D.C.?
Yes. Cheapflights offers flight deals from Louisville to Washington, D.C. 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 Louisville to Washington, D.C.?
Currently, August is the cheapest month in which you can book a flight from Louisville to Washington, D.C. (average of $309). Flying from Louisville to Washington, D.C. in June is currently the most expensive (average of $387). 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

Arlington

Alexandria

Fairfax

Tysons

Springfield

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Top 5 airlines flying from Louisville to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$122	Average$191	FlexibilityNo cancel fee	On-time65%
United Airlines	Cheapest$158	Average$330	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$177	Average$280	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$186	Average$315	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$238	Average$330	FlexibilityNo cancel fee	On-time63%

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$78+ Cheap flights from Louisville (SDF) to Washington, D.C. (WAS)

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Louisville Intl to Washington, D.C. are usually found in August or May, booked 62 days in advance, depart on a Friday or Wednesday and return on a Saturday

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Cheapest flights from Louisville to Washington, D.C.Explore the most affordable flight options available from Louisville to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Explore the most affordable flight options available from Louisville to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

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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 Louisville to Washington, D.C. in March.

The best insider tips for Louisville to Washington, D.C. flights

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Best time to book a flight from Louisville to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Louisville with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Louisville to Washington, D.C.

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

Use this chart to determine the optimal time to book a round-trip flight from Louisville to Washington, D.C.. Price data was last updated on March 21, 2025.

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

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

Find hourly flight availability from Louisville to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

What is the cheapest day to fly from Louisville to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Louisville to Washington, D.C.. Price data was last updated on March 23, 2025.

Weekly flight availability from Louisville to Washington, D.C.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

Reviews of airlines servicing Washington, D.C.

Read reviews from past customers who have flown Southwest, Delta and United Airlines from Louisville to Washington, D.C.. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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Can I find deals for flights from Louisville to Washington, D.C. that include hotel bookings?

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

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Top 5 airlines flying from Louisville to Washington, D.C.

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Cheapest flights from Louisville to Washington, D.C.
Explore the most affordable flight options available from Louisville to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.