IAD - SDF

$90 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 3/12. 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

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Louisville Intl 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
12:50 pm - 2:43 pmIAD-SDF
1h 53mnonstop
6:00 am - 7:35 amSDF-IAD
1h 35mnonstop
$184United Airlines
Find Deal
Wed, Mar 12 - Sat, Mar 15
5:45 pm - 7:38 pmIAD-SDF
1h 53mnonstop
2:30 pm - 4:06 pmSDF-IAD
1h 36mnonstop
$189United Airlines
Find Deal
Mon, Feb 17 - Mon, Feb 24
5:47 pm - 11:44 pmIAD-SDF
5h 57m1 stop
10:05 am - 11:42 amSDF-IAD
1h 37mnonstop
$194United Airlines
Find Deal
Thu, Feb 20 - Wed, Feb 26
7:25 am - 11:40 amIAD-SDF
4h 15m1 stop
6:20 pm - 11:13 pmSDF-IAD
4h 53m1 stop
$199Delta
Find Deal
Wed, Feb 5 - Wed, Feb 5
12:30 pm - 5:49 pmIAD-SDF
5h 19m1 stop
7:35 am - 11:48 amSDF-IAD
4h 13m1 stop
$204Delta
Find Deal
Sat, Feb 15 - Sun, Feb 16
6:31 pm - 10:30 pmIAD-SDF
3h 59m1 stop
6:17 am - 1:18 pmSDF-IAD
7h 01m1 stop
$267American Airlines
Find Deal
Sat, Feb 15 - Sun, Feb 16
6:27 am - 11:39 amIAD-SDF
5h 12m1 stop
5:00 am - 8:50 amSDF-IAD
3h 50m1 stop
$310American Airlines
Find Deal
Fri, Mar 7 - Sun, Mar 9
7:05 pm - 8:31 amIAD-SDF
13h 26m1 stop
9:18 pm - 12:50 pmSDF-IAD
15h 32m2 stops
Thu, Apr 24 - Sun, Apr 27
5:40 pm - 11:46 pmIAD-SDF
30h 06m3 stops
9:30 pm - 4:15 pmSDF-IAD
18h 45m3 stops
Mon, Feb 17 - Mon, Feb 24
9:10 pm - 10:17 amIAD-SDF
13h 07m1 stop
4:28 pm - 9:17 amSDF-IAD
16h 49m1 stop
$406Allegiant Air
Find Deal
Thu, Mar 13 - Sun, Mar 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 August, where tickets cost $257 (return) on average. On the other hand, the most expensive months are September and April, where the average cost of round-trip tickets is $500 and $395 respectively.

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

$90
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 11% 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 $90 for a one-way ticket and $184 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 $269 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 $330 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 $253 or less one-way and $254 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 8521 reviews
8.6Crew
7.3Food
8.2Boarding
8.0Comfort
7.9Entertainment
Airline reviews

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

10.0 ExcellentD, Jan 2025ABE - ATL
Read more Delta reviews

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

Flight left early and arrived early. the whole trip was excellent.

Seats were really tight and the seat belts did not give enough slack.

I like in St George and prefer to fly out of CDC than SGU. Hopefully, they will continue the flights out of Cedar

Broken jer bridge. Poor communication about it. Lost 2 of 4 luggage pieces

Overall, it was okay. Seat was a little cramped. Would’ve liked more substantial snacks or opportunity to buy some.

Newer plane, relatively easy boarding, not a full flight and was told that we could not be moved up because of weight and balance issues. Otherwise, a very good experience.

Other then mechanical/ computer problem and 3.5 hours flight delay the flight was great. I guess that what happened when you fly an old airplane now a day.

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?

Maybe add a seat trade app for flyers that didn’t get seats together

It’s been awhile since I have traveled on United. I, along with my family who were on the flight noted how smoothly everything went . Boarding, flight crew and service was excellent.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

I completely missed my flight because the first leg was longer than planned. I had to sleep overnight in the airport because no accommodation was provided and then sent to Trinidad in the morning with an anticipated 7 hour layover before my flight to Georgetown which was now with Caribbean Airlines. I tried twice with customer service to see if they could put me on an earlier flight which had seats available but was told it wasn’t possible.

First class felt like economy, seats were horrible, food was horrible, staff inattentive

EVen warmer in the plane it think it was 24+ degrees

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.

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

Information on your arrival and departure airports

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