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IAD - SDF

Find cheap flights from Washington Dulles Airport to Louisville from $103

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 6/17. 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
Thu 5/23
Thu 5/30

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 44,632,927 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Dulles Intl 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 Dulles Intl 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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
12:55 pm - 2:40 pmIAD-SDF
1h 45mnonstop
6:00 am - 7:35 amSDF-IAD
1h 35mnonstop
$189United Airlines
Find Deal
Sat, Jun 22 - Sun, Jun 23
6:10 am - 9:47 amIAD-SDF
3h 37m1 stop
8:20 am - 1:54 pmSDF-IAD
5h 34m1 stop
$193Delta
Find Deal
Tue, Jul 16 - Fri, Jul 19
3:27 pm - 10:21 pmIAD-SDF
6h 54m1 stop
6:45 am - 11:15 amSDF-IAD
4h 30m1 stop
$194American Airlines
Find Deal
Wed, May 15 - Tue, May 21
12:55 pm - 2:40 pmIAD-SDF
1h 45mnonstop
6:00 am - 7:35 amSDF-IAD
1h 35mnonstop
$195United Airlines
Find Deal
Wed, Jul 3 - Fri, Jul 5
6:00 am - 11:42 amIAD-SDF
5h 42m1 stop
6:00 am - 7:35 amSDF-IAD
1h 35mnonstop
$198United Airlines
Find Deal
Tue, May 21 - Sat, May 25
9:28 am - 2:43 pmIAD-SDF
5h 15m1 stop
8:18 pm - 12:01 amSDF-IAD
3h 43m1 stop
$204American Airlines
Find Deal
Thu, Jul 4 - Thu, Jul 11
12:55 pm - 2:40 pmIAD-SDF
1h 45mnonstop
6:00 am - 7:35 amSDF-IAD
1h 35mnonstop
$206United Airlines
Find Deal
Fri, May 24 - Thu, May 30
5:41 pm - 9:50 pmIAD-SDF
4h 09m1 stop
5:44 pm - 11:55 pmSDF-IAD
6h 11m1 stop
$207Delta
Find Deal
Wed, May 29 - Mon, Jun 3
6:00 am - 10:03 amIAD-SDF
4h 03m1 stop
6:28 pm - 10:52 pmSDF-IAD
4h 24m1 stop
$208Delta
Find Deal
Thu, Jul 18 - Sat, Jul 20
9:30 am - 11:26 amIAD-SDF
1h 56mnonstop
9:35 am - 11:15 amSDF-IAD
1h 40mnonstop
$210United Airlines
Find Deal
Tue, May 7 - Tue, May 14

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 flights from Washington, D.C. Dulles Intl Airport to Louisville clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Louisville on a Tuesday and more expensive on a Monday. On your return trip to Washington Dulles Airport, you should consider flying back on a Friday, and avoid Sundays for better 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 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 $253 on average. On the other hand, the most expensive months are May and October, where the average cost of tickets is $390 and $365 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Louisville, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 43 days before departure.

Which airlines provide the cheapest flights from Washington Dulles Airport to Louisville?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Washington Dulles Airport to Louisville found by KAYAK users in the last 72 hours was for $189 on United Airlines, followed by Delta ($193). One-way flight deals have also been found from as low as $103 on American Airlines and from $104 on Delta.

Which airlines fly non-stop between Washington, D.C. Dulles Intl Airport and Louisville?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Washington, D.C. Dulles Intl Airport to Louisville.
There is just one airline that flies from Washington, D.C. Dulles Intl Airport to Louisville direct and that is United Airlines. The best one-way deal found from United Airlines for the route is $180.

How many flights are there between Washington, D.C. Dulles Intl Airport and Louisville per day?

Each day, there are between 6 and 8 nonstop flights that take off from Washington, D.C. Dulles Intl Airport and land in Louisville, with an average flight time of 1h 49m. The most common departure time is 9:00 am and most flights take off in the morning. Each week, there are 51 flights. The most frequent day of departure is Sunday, when 16% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between Washington, D.C. Dulles Intl Airport and Louisville?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Washington Dulles Airport to Louisville take?

A direct flight to Louisville will take on average 1h 43m to travel the 450 miles flying distance from Washington Dulles Airport.

What’s the earliest departure time from Washington Dulles Airport to Louisville?

Early birds can take the earliest flight from Washington, D.C. Dulles Intl Airport at 8:30 am and will be landing in Louisville at 10:19 am.

What’s the latest departure time from Washington Dulles Airport to Louisville?

If you prefer to fly at night, the latest flight from Washington, D.C. Dulles Intl Airport to Louisville jets off at 6:15 pm and lands at 8:02 pm.

Good to know

Low season

January

High season

June

Cheapest flight

$103
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 33% increase in price.
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 $103 for a one-way ticket and $189 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 $207 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 $308 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

Top tips for finding a cheap flight from IAD to Louisville

  • Looking for a cheap flight? 25% of our users found flights on this route for $149 or less one-way and $236 or less round-trip.

Prefer to fly non-stop from Washington Dulles Airport to Louisville?

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

Nonstop 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

Nonstop 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 3 airlines serving 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 11028 reviews
7.5food
8.6crew
8.2boarding
7.9comfort
8.0entertainment
Airline reviews

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

2.0 MediocreMarisol, Apr 2024DFW - ATL
Read more about Delta reviews

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

They did a fine job. Can't wait to use Delta in the future.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

Seat back monitors and outlets were dead and not working.

Everything was great except for the seat. The backrest would not stay in the upright position.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

Flight delayed about 2 hrs so it made it a VERY late night

It was a crowded flight. They did the best they could.

they made me check my carryon. There was space in the overhead bins.

The plane was delayed 2 hours. The wifi did not work. The seat in first class was not comfortable because the bottom felt like it lost all of its padding. And I did not like when the flight attendant made me wait at my seat to use the bathroom and didn't tell me why. If there were too many people using the 1st Class bathroom, she should have told me to go in the back, coach bathrooms. I guess I have to feel fortunate that they found 2 local pilots to still fly the plane tonight after the original pilots ended up at an airport 60 miles away due to high winds.

The crew were really great, but the 4 hour delay in small chunks was the worst.

Just a crappy airline. The same every time. You feel you are a cow on a farm. You are being being whipped and pulled.

Wasn’t very crowded. Seamless processes. No issues traveling with two little kids.

My interaction with the flight attendent Eve was horrible. I was seated in 3F and was blown away watching her repeatedly skip me as she took other customer orders for lunch...she took the customer next to me but skipped me, then took everyone's order around me (in front of and behind me) . After she had taken every customer's orders to include those behind me, she came to me and said we are out of everything except one last item. I was mortified, in that, I am a 1k flyer, had pre-ordered AND as an African American could only assume why she repeatedly skipped me...mortified. no words

The Flight was good, pilot seemed very skillful. My wheel chair sister who could barely walk was allotted the second last seat in the aircraft, with great difficulty she managed to reach on her seat, as she required attendance we were given separate seat, even on request no one cared, so much so there were single passengers who were given twin seats. May not be taken as complaint but a reminder to the checkin staff to keep in mind in future the allottment of wheel chair passengers seats.

Almost 2 hour delay in boarding with all standing ready to board at original time. No explanation given.

787-9 Transcon from IAD-LAX FYI no meals in premium plus, not considered Premium - seats are wonderful https://www.united.com/ual/en/us/fly/travel/inflight/premium-services.html Horrible handling of delayed flight

It was a great experience. Do not normally fly United. Very nice. Thank you and happy holidays

Overall the flights pretty good. The snacks we’re good and they were plenty of them. Both boarding and deplaning went quickly.

Delayed abs delayed Gate crew giving poor info - we are definitely leaving at —- Ultimately to cancel flight after 4+ hours of delays Just cancel it earlier

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

Lots of weather delays that were poorly communicated and managed. I get there are weather delays but they didn’t make it clear what was happening or comfortable on the plane

Everything was on time; the flight attendants and the gate personnel were very pleasant and helpful.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Perfect flight. On time departure and early arrival. Smooth flight.

Awful! The flight was delayed and we sat on the plane in DCA for an hour because fuel was out in the wrong part of the plane and would not be accessible during flight. So the plane had to be refueled in correct tank. They also allowed someone to get off of the plane. This delayed my six hour flight by an hour and made me miss my connecting flight. I ran to new gate and American Airlines agents new about the delay and even knew that I was trying to make the connection. They knew thru communication with my friend while in flight that I was in the airport and running to the new gate and they still closed the gate and refused to let me on the new flight despite plane still being at the gate. It was horrible and I had to be rebooked on a flight for 24 hours later. This has been a nightmare and if American Airlines can cause customers to be delayed and then have zero empathy as having an on time flight was more important to them than helping a customer who was delayed by no fault of her own, then it's seems that it's not a company that I want to continue to give my loyalty to. I'm so disgusted.

Help was available but timing was bad in my case

It was a horrible snow storm, but updates were inconsistent and the app never displayed a remotely accurate time or gate until very close to boarding.

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.
6/17Mon
1 stopAmerican Airlines
4h 24mIAD-SDF
$103
6/2Sun
1 stopDelta
3h 50mIAD-SDF
$104
5/15Wed
1 stopAmerican Airlines
6h 54mIAD-SDF
$107
6/12Wed
nonstopUnited Airlines
1h 44mIAD-SDF
$110
5/9Thu
1 stopSun Country Air
21h 42mIAD-SDF
$118
5/19Sun
nonstopUnited Airlines
1h 49mIAD-SDF
$125
5/5Sun
1 stopSun Country Air
23h 17mIAD-SDF
$148
5/10Fri
1 stopDelta
4h 05mIAD-SDF
$155
4/30Tue
2 stopsQatar Airways
51h 19mIAD-SDF
$1,637
5/2Thu
2 stopsQatar Airways
49h 58mIAD-SDF
$1,677

Search by stops

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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.
4/28Sun
nonstopUnited Airlines
1h 56mIAD-SDF
5/8Wed
nonstopUnited Airlines
1h 40mSDF-IAD
$435
4/28Sun
nonstopUnited Airlines
1h 56mIAD-SDF
5/8Wed
multi-stopUnited Airlines
5h 59mSDF-IAD
$444
4/28Sun
multi-stopAmerican Airlines
6h 47mIAD-SDF
5/8Wed
multi-stopAmerican Airlines
3h 59mSDF-IAD
$451
4/25Thu
nonstopUnited Airlines
1h 54mIAD-SDF
4/30Tue
nonstopUnited Airlines
1h 40mSDF-IAD
$499
4/25Thu
nonstopUnited Airlines
1h 54mIAD-SDF
4/30Tue
multi-stopUnited Airlines
4h 28mSDF-IAD
$508
4/25Thu
multi-stopAmerican Airlines
5h 24mIAD-SDF
5/3Fri
multi-stopAmerican Airlines
3h 41mSDF-IAD
$515
4/28Sun
multi-stop
26h 11mIAD-SDF
5/8Wed
multi-stop
27h 52mSDF-IAD
$530
4/28Sun
multi-stop
26h 11mIAD-SDF
5/8Wed
multi-stop
19h 54mSDF-IAD
$542
4/24Wed
multi-stopDelta
7h 02mIAD-SDF
4/27Sat
multi-stopDelta
4h 46mSDF-IAD
$568
4/25Thu
multi-stopDelta
3h 59mIAD-SDF
4/30Tue
multi-stopDelta
3h 47mSDF-IAD
$607

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Washington Dulles Airport - Louisville Flights

Departure:

Washington Dulles Airport (IAD)United States

Destination:

Louisville (SDF)United States

Return flight deals:

Louisville - Washington Dulles Airport

Cabin classes:

$639
$511
$404
$173