IAD - SDF

$98 Find Cheap Flights from Washington Dulles Airport to Louisville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Louisville departing on 2/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags

Search hundreds of travel sites at once for deals on flights to Louisville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Louisville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Louisville, as well as popular online travel agencies
In the last 7 days travelers have searched 41,299,237 times on KAYAK, and here is why:

Save 23% or moreCompare multiple travel sites with one search.

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Cheap Flight Deals from Washington Dulles Airport to Louisville (IAD-SDF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington Dulles Airport to Louisville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Dulles Intl to Louisville

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Dulles Intl to Louisville.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:59 pm - 8:52 pmIAD-SDF
1h 53mnonstop
10:02 am - 11:41 amSDF-IAD
1h 39mnonstop
$199United Airlines
Find Deal
Sat, Jan 4 - Mon, Jan 6
6:59 pm - 11:59 pmIAD-SDF
5h 00m1 stop
6:00 am - 11:57 amSDF-IAD
5h 57m1 stop
$208Delta
Find Deal
Fri, Jan 24 - Sun, Jan 26
12:31 pm - 5:38 pmIAD-SDF
5h 07m1 stop
6:00 am - 11:57 amSDF-IAD
5h 57m1 stop
$233Delta
Find Deal
Sat, Jan 18 - Mon, Jan 20
5:27 pm - 10:27 pmIAD-SDF
5h 00m1 stop
2:43 pm - 9:05 pmSDF-IAD
6h 22m1 stop
$238Delta
Find Deal
Tue, Dec 31 - Tue, Jan 7
8:40 am - 10:33 amIAD-SDF
1h 53mnonstop
6:00 am - 7:35 amSDF-IAD
1h 35mnonstop
$249United Airlines
Find Deal
Wed, Mar 19 - Sun, Mar 23
5:45 pm - 7:38 pmIAD-SDF
1h 53mnonstop
10:05 am - 11:42 amSDF-IAD
1h 37mnonstop
$254United Airlines
Find Deal
Fri, Feb 14 - Sun, Feb 16
5:00 am - 11:49 amIAD-SDF
6h 49m1 stop
6:00 pm - 11:58 pmSDF-IAD
5h 58m1 stop
$258American Airlines
Find Deal
Fri, Jan 10 - Sun, Jan 12
6:59 pm - 8:52 pmIAD-SDF
1h 53mnonstop
10:02 am - 11:41 amSDF-IAD
1h 39mnonstop
$259United Airlines
Find Deal
Fri, Jan 3 - Sun, Jan 5
5:45 pm - 10:29 pmIAD-SDF
4h 44m1 stop
3:20 pm - 8:20 pmSDF-IAD
5h 00m1 stop
$268United Airlines
Find Deal
Sat, Jan 18 - Tue, Jan 21
4:35 pm - 10:03 pmIAD-SDF
5h 28m1 stop
6:17 am - 1:18 pmSDF-IAD
7h 01m1 stop
$304American Airlines
Find Deal
Fri, Feb 14 - Sun, Feb 16

Flights from Dulles Intl to Louisville - Travel Insights & Trends

Get data-powered insights and trends into flights from Dulles Intl to Louisville to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Louisville?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Louisville clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Louisville on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Washington Dulles Airport to Louisville. For your return ticket, we recommend flying on a Wednesday and avoiding Mondays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Louisville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Louisville is January, where tickets cost $228 (return) on average. On the other hand, the most expensive months are December and October, where the average cost of round-trip tickets is $359 and $343 respectively.

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to Louisville?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.
Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $324 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Louisville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Louisville, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low season

January

High season

May

Cheapest flight

$98
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Washington Dulles Airport to Louisville

When to book flights from Dulles Intl to Louisville

Are your dates flexible? Find out the best times to travel from Dulles Intl to Louisville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Louisville flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Louisville?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Louisville was $98 for a one-way ticket and $199 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Louisville?

    A passport is not required to fly from Washington Dulles Airport to Louisville.

  • Which airports will I be using when flying from Washington Dulles Airport to Louisville?

    Washington Dulles Airport and Louisville are both served by 1 main airport. You will leave Washington Dulles Airport from Washington, D.C. Dulles Intl and will be arriving at Louisville Intl.

  • Which airlines offer Wi-Fi service onboard planes from Washington Dulles Airport to Louisville?

    American Airlines, and Delta offer inflight Wi-Fi service on the Washington Dulles Airport to Louisville flight route.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Louisville?

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Washington Dulles Airport to Louisville flight route.

  • Which airline alliances offer flights from Washington Dulles Airport to Louisville?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Louisville.

  • On which days can I fly direct from Washington Dulles Airport to Louisville?

    There are nonstop flights from Washington Dulles Airport to Louisville on a daily basis.

  • Which is the best airline for flights from Washington, D.C. to Louisville, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Louisville are Delta and United Airlines. With an average price for the route of $233 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $328 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Louisville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Louisville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Louisville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Louisville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and SDF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Louisville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Louisville

  • Looking for a cheap flight? 25% of our users found flights on this route for $130 or less one-way and $253 or less round-trip.

Prefer to fly direct from Washington Dulles Airport to Louisville?

Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Louisville Intl Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Louisville Intl

Monday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

Tuesday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

Wednesday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

Thursday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

Friday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

Saturday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

Sunday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

See more direct flights

Direct returns

Louisville Intl to Washington, D.C. Dulles Intl

Monday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

Tuesday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

Wednesday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

Thursday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

Friday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

Saturday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

Sunday

Air Canada, Copa Airlines, Lufthansa, +1 more

Air Canada, Copa Airlines, +2 more

See more direct flights
See more direct flights

Top airlines flying from Dulles Intl to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Louisville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Louisville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 8601 reviews
8.2Boarding
8.6Crew
7.3Food
8.0Comfort
7.9Entertainment
Airline reviews

I was with one of the last zones to board. It was kind of annoying to finally get called to board and my whole section was already on the plane. Clearly they boarded with previous zones. So by the time I got on board, there were no spaces for my luggage above my head. I had to put my luggage 4+ rows behind me, which meant that I had to wait even longer to get off the plane, since I had to wait for those rows to clear the aisle before I could retrieve my luggage and exit the plane. This also held up the plane cleaners, as they couldn't service my row until I cleared it, so they were all standing there waiting for me, while I'm standing there waiting for the other passengers to clear the aisle. Anyways, I wasn't in a rush this time, so I just waited, but I could see that being a problem in the future. Now, I could have checked my luggage, of course, but coincidentally, a friend of mine on the same flight got their luggage damaged (wheel completely knocked off) and was told by the Baggage Attendant in the airport that Delta doesn't "cover wheel damage" on luggage. This was disappointing to hear. I'm glad I didn't check mine through. If it were my luggage, I'd be highly frustrated to hear that. It makes me not want to check my luggage in the future.

8.0 ExcellentMelodii, Dec 2024ATL - MSY
Read more Delta reviews

I was with one of the last zones to board. It was kind of annoying to finally get called to board and my whole section was already on the plane. Clearly they boarded with previous zones. So by the time I got on board, there were no spaces for my luggage above my head. I had to put my luggage 4+ rows behind me, which meant that I had to wait even longer to get off the plane, since I had to wait for those rows to clear the aisle before I could retrieve my luggage and exit the plane. This also held up the plane cleaners, as they couldn't service my row until I cleared it, so they were all standing there waiting for me, while I'm standing there waiting for the other passengers to clear the aisle. Anyways, I wasn't in a rush this time, so I just waited, but I could see that being a problem in the future. Now, I could have checked my luggage, of course, but coincidentally, a friend of mine on the same flight got their luggage damaged (wheel completely knocked off) and was told by the Baggage Attendant in the airport that Delta doesn't "cover wheel damage" on luggage. This was disappointing to hear. I'm glad I didn't check mine through. If it were my luggage, I'd be highly frustrated to hear that. It makes me not want to check my luggage in the future.

The dear was very limited in space. I could put my water bottle in seat basket. Also, there was no inflight entertainment in the delta app?

Typically I give delta excellent reviews. Our flight was delayed 2hrs, I was one of the fortunate ones who were able to get to my connecting flight. Also, annoying that on the connecting flight boarding personnel make me put away a small bag into my carryon. It small enough to put in back pocket seat, why hold me and the line up to just push it into my carryon.

Everything was great. Great service, excellent communication, and early arrival

Delta flight attendants poorly managed the boarding process and overhead storage. My bag was checked last minute and no claim ticket was provided. My bag is now lost. Complete incompetence by all flight crew involved.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

Customer service at the gate in the flight was exceptional. On time. Aircraft and seat was decent. Thanks Delta. 💗

It was terrible, if they ran flights on time it would make a big difference.

Great flight. On-time, comfortable, clean aircraft, and offered snacks pre-flight to plan for a potentially turbulent route. I wish there was Wi-Fi an all Delta Aircrafts but for a short flight this is not much of a problem.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

We arrived early and finally made it to our gate almost an hour after.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

The flying experience was great. The flight was on time with no boarding issues during a peak travel period. The short cut baggage drop and process was not smooth and efficient at Dulles.

Fast checkin with the self serve terminal, good communication at the boarding gate.

Very friendly staff. The flight was on time. Need a bit heavy covers/blankets. It can get colder with a thin blanket.

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

This was a 5 hour flight with no entertainment and with a snack being provided (pretzels and fruit bar), which are both high in carbs and sugar. Nuts would have been a better choice.

Never nice, United Express partners always do an amazing job.

Everything was perfect except the pad at the top of the seat back. It pushes my head forward in a very uncomfortable position and it is not removable.

Good plane, crew, and flight. Boarding was a bit chaotic. Bathrooms were unacceptable. United DESPERATELY needs a new terminal at IAD.

Book cheap flights from Washington, D.C. to Louisville

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Louisville found on KAYAK in the last 72 hours.
2/23Sun
1 stopAllegiant Air
11h 30mIAD-SDF
$98
3/2Sun
1 stopAllegiant Air
11h 34mIAD-SDF
$102
2/23Sun
2 stops
17h 09mIAD-SDF
$142
1/18Sat
nonstopUnited Airlines
1h 53mIAD-SDF
$145
3/2Sun
2 stops
17h 09mIAD-SDF
$148
1/11Sat
1 stopDelta
5h 34mIAD-SDF
$154
1/12Sun
1 stopDelta
4h 27mIAD-SDF
$165
1/21Tue
nonstopUnited Airlines
1h 53mIAD-SDF
$168
1/18Sat
2 stopsAmerican Airlines
11h 07mIAD-SDF
$266
1/20Mon
2 stopsAmerican Airlines
11h 07mIAD-SDF
$291

Search by stops

Search by airline

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Last minute flights from Dulles Intl to Louisville

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to Louisville that are departing in the next 10 days.
12/25Wed
nonstopUnited Airlines
1h 53mIAD-SDF
1/2Thu
nonstopUnited Airlines
1h 39mSDF-IAD
$354
12/25Wed
multi-stopUnited Airlines
4h 47mIAD-SDF
1/2Thu
nonstopUnited Airlines
1h 39mSDF-IAD
$364
12/25Wed
multi-stopAmerican Airlines
5h 38mIAD-SDF
1/2Thu
multi-stopAmerican Airlines
3h 49mSDF-IAD
$368
12/22Sun
nonstopUnited Airlines
1h 53mIAD-SDF
12/30Mon
nonstopUnited Airlines
1h 39mSDF-IAD
$394
12/24Tue
multi-stopAmerican Airlines
5h 40mIAD-SDF
12/25Wed
multi-stopAmerican Airlines
6h 24mSDF-IAD
$408
12/23Mon
nonstopUnited Airlines
1h 53mIAD-SDF
12/25Wed
nonstopUnited Airlines
1h 39mSDF-IAD
$409
12/23Mon
nonstopUnited Airlines
1h 53mIAD-SDF
12/25Wed
multi-stopUnited Airlines
4h 48mSDF-IAD
$419
12/23Mon
multi-stopUnited Airlines
4h 54mIAD-SDF
12/25Wed
multi-stopUnited Airlines
4h 48mSDF-IAD
$428
12/22Sun
multi-stopAmerican Airlines
7h 05mIAD-SDF
12/30Mon
multi-stopAmerican Airlines
3h 49mSDF-IAD
$548
12/22Sun
multi-stop
23h 50mIAD-SDF
12/23Mon
multi-stop
18h 43mSDF-IAD
$728

Search by stops

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Everything you need to know for your flight from Dulles Intl to Louisville

Information on your arrival and departure airports

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