How long is the flight from Louisville to Washington, D.C.?

Airlines like Delta, Southwest, and United Airlines fly from Louisville to Washington, D.C. in about 1h 36m. The time it takes to get you to your destination can typically vary by up to 7h 29m. There are 450 mi between Louisville and Washington, D.C.. This flight may include one or multiple stops.

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

American Airlines, at $188, was found to be the cheapest airline from Louisville to Washington, D.C..Alternate airlines to your destination round-trip include United Airlines and Delta. You may be able to fly from Louisville to Washington, D.C. for 29% 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 $68 on United Airlines. Other airlines that offer cheap prices include Southwest from $94 and Delta from $99 one-way.

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.

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).

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

Most travelers choose Louisville Intl - Washington, D.C. Reagan-National, Louisville Intl - Baltimore/Washington or Louisville Intl - Washington, D.C. Dulles Intl 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 $964, our data indicates the cheapest price to be $148. The most popular route (Louisville Intl - Washington, D.C. Reagan-National), is priced around $130.

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 Republic Airways (97%), Copa Airlines (92%) or United Airlines (90%) 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 63% on this flight, we recommend booking at least 28 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 $249 1-2 weeks out and tickets from $304 for flights departing within the next 72 hours.

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

June can be a great time to fly to Washington, D.C. from Louisville with a flight ticket averaging about $266. Cheapflights users have found deals in the month of June for as cheap as $189. The most expensive prices can be found in the month of August.

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 11 outbound flights to Washington, D.C. per day from 4 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.

$68+ Flights from Louisville to Washington, D.C.

Q: How much does it cost to fly round-trip from Louisville to Washington, D.C.?

Airfare is below average for this route at the moment. Louisville to Washington, D.C. flights typically cost between $220 and $357 in November. The cheapest round-trip price found within the last 3 days was $135 on United Airlines (Nov 18-Nov 22).

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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 June or July, booked 63 days in advance, depart on a Friday or Wednesday and return on a Saturday

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

Round-trip from	$135 (United Airlines)
One-way from	$68 (United Airlines)
Popular in	August
Cheapest in	June
Average price	$268
Good round-trip deal	$273 or less
Good one-way deal	$140 or less

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

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

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Highest demand for flights based on searches. 2% potential increase in price ($6 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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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 September 15, 2025.

Tue 11/1811:00 amSDF - BWI

1 stop6h 14mUnited Airlines

Sat 11/225:12 pmBWI - SDF

1 stop5h 17mUnited Airlines

Deal found 9/14

$135

Fri 12/127:04 pmSDF - BWI

1 stop4h 29mAmerican Airlines

Mon 12/1511:09 amBWI - SDF

1 stop7h 03mAmerican Airlines

Deal found 9/14

$159

Wed 12/109:15 amSDF - BWI

1 stop4h 33mAmerican Airlines

Wed 1/146:09 pmBWI - SDF

1 stop3h 37mAmerican Airlines

Deal found 9/13

$169

Sat 10/187:55 amSDF - BWI

1 stop3h 39mDelta

Sun 10/266:00 amBWI - SDF

1 stop3h 50mDelta

Deal found 9/14

$177

Wed 12/105:30 amSDF - BWI

Nonstop1h 35mSouthwest

Wed 1/1411:40 amBWI - SDF

Nonstop1h 55mSouthwest

Deal found 9/13

$180

Wed 11/1211:09 amSDF - DCA

Nonstop1h 45mAmerican Airlines

Sun 11/168:31 amDCA - SDF

Nonstop2h 08mAmerican Airlines

Deal found 9/13

$189

Sat 11/19:55 amSDF - IAD

Nonstop1h 38mUnited Airlines

Sun 11/212:50 pmIAD - SDF

Nonstop1h 55mUnited Airlines

Deal found 9/15

$189

Sat 11/13:11 pmSDF - IAD

1 stop4h 13mDelta

Mon 11/35:52 pmIAD - SDF

1 stop6h 09mDelta

Deal found 9/12

$190

Tue 10/216:25 amSDF - DCA

1 stop3h 35mSouthwest

Wed 10/2210:35 amDCA - SDF

1 stop5h 45mSouthwest

Deal found 9/14

$192

Wed 10/19:55 amSDF - IAD

Nonstop1h 39mUnited Airlines

Sat 10/41:05 pmIAD - SDF

Nonstop1h 46mUnited Airlines

Deal found 9/13

$194

Tue 12/231:30 pmSDF - DCA

1 stop5h 25mSouthwest

Tue 12/306:00 amDCA - SDF

1 stop5h 45mSouthwest

Deal found 9/13

$197

Sat 11/19:55 amSDF - IAD

Nonstop1h 38mUnited Airlines

Mon 11/35:30 pmIAD - SDF

Nonstop1h 57mUnited Airlines

Deal found 9/12

$198

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 September 15, 2025.

Sat 10/187:55 amSDF - BWI

1 stop3h 39mDelta

Sun 10/266:00 amBWI - SDF

1 stop3h 50mDelta

Deal found 9/14

$177

Wed 12/101:05 pmSDF - BWI

1 stop9h 05mSouthwest

Wed 1/1411:40 amBWI - SDF

Nonstop1h 55mSouthwest

Deal found 9/13

$185

Sat 11/12:35 pmSDF - IAD

Nonstop1h 36mUnited Airlines

Wed 11/55:30 pmIAD - SDF

Nonstop1h 57mUnited Airlines

Deal found 9/13

$189

Thu 10/236:05 amSDF - DCA

Nonstop1h 40mAmerican Airlines

Mon 10/277:59 pmDCA - SDF

Nonstop2h 03mAmerican Airlines

Deal found 9/13

$200

Wed 11/126:00 amSDF - BWI

1 stop26h 34mMultiple Airlines

Sat 11/152:30 pmBWI - SDF

1 stop19h 29mMultiple Airlines

Deal found 9/13

$206

Sat 11/13:11 pmSDF - BWI

1 stop5h 53mDelta

Sun 11/27:45 pmBWI - SDF

1 stop4h 16mDelta

Deal found 9/15

$177

Thu 10/232:03 pmSDF - IAD

Nonstop1h 42mUnited Airlines

Sat 10/257:00 pmIAD - SDF

Nonstop1h 48mUnited Airlines

Deal found 9/14

$189

Wed 11/127:05 pmSDF - DCA

1 stop3h 50mSouthwest

Sun 11/166:00 amDCA - SDF

1 stop5h 45mSouthwest

Deal found 9/13

$203

Sat 11/19:55 amSDF - IAD

Nonstop1h 38mUnited Airlines

Mon 11/35:30 pmIAD - SDF

Nonstop1h 57mUnited Airlines

Deal found 9/12

$198

Sun 12/710:55 amSDF - BWI

1 stop12h 59mMultiple Airlines

Mon 12/83:01 pmBWI - SDF

1 stop8h 44mMultiple Airlines

Deal found 9/13

$223

Sat 11/13:11 pmSDF - DCA

1 stop6h 32mDelta

Wed 11/57:35 pmDCA - SDF

1 stop4h 26mDelta

Deal found 9/13

$203

Sat 11/16:50 amSDF - DCA

1 stop6h 55mSouthwest

Wed 11/53:45 pmDCA - SDF

2 stops7h 20mSouthwest

Deal found 9/13

$208

Last-minute flights from Louisville to Washington, D.C.
Discover last-minute flight deals from Louisville to Washington, D.C.. Data last updated September 15, 2025 and is based on user searches.

Sat 9/205:32 pmSDF - DCA

Nonstop1h 43mAmerican Airlines

Sat 10/258:32 amDCA - SDF

Nonstop2h 11mAmerican Airlines

Deal found 9/12

$203

Tue 9/309:55 amSDF - IAD

Nonstop1h 39mUnited Airlines

Sat 10/41:05 pmIAD - SDF

Nonstop1h 46mUnited Airlines

Deal found 9/14

$199

Wed 10/19:55 amSDF - IAD

Nonstop1h 39mUnited Airlines

Sat 10/41:05 pmIAD - SDF

Nonstop1h 46mUnited Airlines

Deal found 9/13

$194

Thu 10/22:03 pmSDF - IAD

Nonstop1h 42mUnited Airlines

Sat 10/47:00 pmIAD - SDF

Nonstop1h 48mUnited Airlines

Deal found 9/13

$210

Tue 10/144:28 pmSDF - BWI

1 stop4h 20mAmerican Airlines

Tue 10/216:13 pmBWI - SDF

1 stop4h 50mAmerican Airlines

Deal found 9/14

$159

Thu 10/169:55 amSDF - IAD

Nonstop1h 39mUnited Airlines

Wed 12/1012:50 pmIAD - SDF

Nonstop1h 55mUnited Airlines

Deal found 9/14

$189

Fri 10/172:50 pmSDF - DCA

1 stop6h 05mSouthwest

Mon 10/206:55 pmDCA - SDF

1 stop4h 45mSouthwest

Deal found 9/13

$209

Sat 10/187:55 amSDF - BWI

1 stop3h 39mDelta

Sun 10/266:00 amBWI - SDF

1 stop3h 50mDelta

Deal found 9/14

$177

Sat 10/186:00 amSDF - IAD

1 stop4h 11mDelta

Sun 10/266:00 amIAD - SDF

1 stop3h 56mDelta

Deal found 9/14

$209

Tue 10/216:25 amSDF - DCA

1 stop3h 35mSouthwest

Wed 10/226:10 amDCA - SDF

1 stop8h 15mSouthwest

Deal found 9/15

$192

Thu 10/236:05 amSDF - DCA

Nonstop1h 40mAmerican Airlines

Sat 10/2511:30 amDCA - SDF

Nonstop1h 50mAmerican Airlines

Deal found 9/14

$189

Thu 10/236:05 amSDF - DCA

Nonstop1h 40mAmerican Airlines

Mon 10/277:59 pmDCA - SDF

Nonstop2h 03mAmerican Airlines

Deal found 9/13

$200

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 September 15, 2025.

Mon 11/2411:00 amSDF - BWI

1 stop6h 14mUnited Airlines

Deal found 9/15

$68

Wed 11/511:00 amSDF - BWI

1 stop6h 14mUnited Airlines

Deal found 9/13

$78

Thu 11/1311:00 amSDF - BWI

1 stop6h 14mUnited Airlines

Deal found 9/14

$80

Wed 12/39:00 amSDF - BWI

1 stop4h 50mUnited Airlines

Deal found 9/13

$81

Fri 10/1011:47 amSDF - BWI

1 stop21h 47mSpirit Airlines

Deal found 9/12

$85

Wed 10/158:17 amSDF - BWI

1 stop4h 28mDelta

Deal found 9/15

$89

Tue 10/143:50 pmSDF - BWI

Nonstop1h 40mSouthwest

Deal found 9/12

$90

Fri 10/179:11 pmSDF - BWI

1 stop13h 27mMultiple Airlines

Deal found 9/12

$93

Tue 10/146:25 amSDF - DCA

1 stop3h 35mSouthwest

Deal found 9/15

$94

Thu 10/307:15 amSDF - BWI

1 stop12h 11mMultiple Airlines

Deal found 9/13

$98

Thu 10/167:15 amSDF - BWI

1 stop5h 25mSpirit Airlines

Deal found 9/12

$99

Tue 11/112:22 pmSDF - DCA

1 stop4h 37mDelta

Deal found 9/15

$99

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

Sat 10/18

7:55 am-11:34 am

1 stop3h 39m

Baltimore/Washington

Sun 10/26

6:00 am-9:50 am

1 stop3h 50m

$177

LouisvilleBaltimore

SDF - BWI

SDFBWI

Louisville Intl

Sat 11/1

3:11 pm-9:04 pm

1 stop5h 53m

Baltimore/Washington

Sun 11/2

7:45 pm-12:01 am

1 stop4h 16m

$177

LouisvilleBaltimore

SDF - BWI

SDFBWI

Louisville Intl

Wed 12/10

1:05 pm-10:10 pm

1 stop9h 05m

Baltimore/Washington

Wed 1/14

11:40 am-1:35 pm

Nonstop1h 55m

$185

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Sat 11/1

2:35 pm-4:11 pm

Nonstop1h 36m

Washington, D.C. Dulles Intl

Wed 11/5

5:30 pm-7:27 pm

Nonstop1h 57m

$189

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Thu 10/23

2:03 pm-3:45 pm

Nonstop1h 42m

Washington, D.C. Dulles Intl

Sat 10/25

7:00 pm-8:48 pm

Nonstop1h 48m

$189

LouisvilleWashington, D.C.

SDF - IAD

SDFIAD

Louisville Intl

Sat 11/1

9:55 am-11:33 am

Nonstop1h 38m

Washington, D.C. Dulles Intl

Mon 11/3

5:30 pm-7:27 pm

Nonstop1h 57m

$198

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Thu 10/23

6:05 am-7:45 am

Nonstop1h 40m

Washington, D.C. Reagan-National

Mon 10/27

7:59 pm-10:02 pm

Nonstop2h 03m

$200

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Wed 11/12

7:05 pm-10:55 pm

1 stop3h 50m

Washington, D.C. Reagan-National

Sun 11/16

6:00 am-11:45 am

1 stop5h 45m

$203

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Sat 11/1

3:11 pm-9:43 pm

1 stop6h 32m

Washington, D.C. Reagan-National

Wed 11/5

7:35 pm-12:01 am

1 stop4h 26m

$203

LouisvilleWashington, D.C.

SDF - DCA

SDFDCA

Louisville Intl

Wed 11/12

5:25 pm-10:54 pm

1 stop5h 29m

Washington, D.C. Reagan-National

Sat 11/15

9:34 am-2:23 pm

1 stop4h 49m

$203

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 55 results

...

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 63 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 $292). Flying from Louisville to Washington, D.C. in April is currently the most expensive (average of $337). 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. Thursday 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 (12 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 on average).

How much does it cost to fly round-trip from Louisville to Washington, D.C.?

Reviews of airlines servicing Washington, D.C.

See what other customers who have flown with Southwest, United Airlines, and American Airlines from Louisville to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Southwest

8.0

Very good

4,242 reviews

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

United Airlines

7.4

Good

8,929 reviews

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 11 outbound flights to Washington, D.C. per day from 4 airlines. Louisville Intl is conveniently located just 5.3 mi from Louisville’s city center.
How long is the flight from Louisville to Washington, D.C.?
Airlines like Delta, Southwest, and United Airlines fly from Louisville to Washington, D.C. in about 1h 36m. The time it takes to get you to your destination can typically vary by up to 7h 29m. There are 450 mi between Louisville and Washington, D.C.. This flight may include one or multiple stops.
What are the cheapest airlines flying from Louisville to Washington, D.C. round-trip?
American Airlines, at $188, was found to be the cheapest airline from Louisville to Washington, D.C..Alternate airlines to your destination round-trip include United Airlines and Delta. You may be able to fly from Louisville to Washington, D.C. for 29% 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 $68 on United Airlines. Other airlines that offer cheap prices include Southwest from $94 and Delta from $99 one-way.
What are the most popular routes from Louisville to Washington, D.C.?
Most travelers choose Louisville Intl - Washington, D.C. Reagan-National, Louisville Intl - Baltimore/Washington or Louisville Intl - Washington, D.C. Dulles Intl 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 Republic Airways (97%), Copa Airlines (92%) or United Airlines (90%) 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 $964, our data indicates the cheapest price to be $148. The most popular route (Louisville Intl - Washington, D.C. Reagan-National), is priced around $130.
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 $292). Flying from Louisville to Washington, D.C. in April is currently the most expensive (average of $337). 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

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Silver Spring

Springfield

Gaithersburg

Fredericksburg

Linthicum Heights

Fairfax

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Owings Mills

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Hanover

Oxon Hill

Laurel

Towson

Dundalk

National Harbor

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from Louisville to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$183	Average$325	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$188	Average$332	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$189	Average$286	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$198	Average$342	FlexibilityNo cancel fee	On-timeN/A

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$68+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.

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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Louisville Intl to Washington, D.C. are usually found in June or July, booked 63 days in advance, depart on a Friday or Wednesday and return on a Saturday

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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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 September 15, 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 September 15, 2025.

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

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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 September 12, 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 September 15, 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 September 14, 2025.

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

How much does it cost to fly round-trip from Louisville to Washington, D.C.?

Reviews of airlines servicing Washington, D.C.

See what other customers who have flown with Southwest, United Airlines, and American Airlines from Louisville to Washington, D.C. have to say. You can also see how each airline compares in terms of 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.?

How long is the flight from Louisville to Washington, D.C.?

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

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

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

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

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

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

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

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

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Alternative routes for Louisville to Washington, D.C.

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Top 4 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 September 15, 2025.