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 1/7. 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 46,646,933 times on KAYAK, and here is why:

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

 
These are the cheapest deals for flights from Dulles Intl to Louisville currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. 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
1:05 pm - 2:59 pmIAD-SDF
1h 54mnonstop
10:09 am - 11:47 amSDF-IAD
1h 38mnonstop
$179United Airlines
Find Deal
Tue, Dec 10 - Wed, Dec 11
1:05 pm - 2:59 pmIAD-SDF
1h 54mnonstop
3:17 pm - 8:18 pmSDF-IAD
5h 01m1 stop
$189United Airlines
Find Deal
Tue, Dec 10 - Wed, Dec 11
5:45 pm - 7:39 pmIAD-SDF
1h 54mnonstop
2:20 pm - 3:58 pmSDF-IAD
1h 38mnonstop
$194United Airlines
Find Deal
Fri, Dec 13 - Sat, Dec 14
10:05 am - 2:27 pmIAD-SDF
4h 22m1 stop
8:10 am - 2:16 pmSDF-IAD
6h 06m1 stop
$198Delta
Find Deal
Tue, Dec 10 - Wed, Dec 11
5:45 pm - 7:39 pmIAD-SDF
1h 54mnonstop
3:17 pm - 8:18 pmSDF-IAD
5h 01m1 stop
$204United Airlines
Find Deal
Fri, Dec 13 - Sat, Dec 14
6:00 am - 10:10 amIAD-SDF
4h 10m1 stop
7:08 am - 11:50 amSDF-IAD
4h 42m1 stop
$210Delta
Find Deal
Mon, Dec 16 - Wed, Dec 18
8:05 pm - 12:35 amIAD-SDF
4h 30m1 stop
8:54 am - 1:23 pmSDF-IAD
4h 29m1 stop
$256American Airlines
Find Deal
Thu, Feb 6 - Sun, Feb 9
9:12 am - 3:07 pmIAD-SDF
5h 55m1 stop
6:17 am - 1:18 pmSDF-IAD
7h 01m1 stop
$276American Airlines
Find Deal
Thu, Feb 20 - Sun, Feb 23
8:25 am - 8:26 amIAD-SDF
24h 01m3 stops
9:21 pm - 12:50 pmSDF-IAD
15h 29m2 stops
Thu, Dec 12 - Sun, Dec 15
12:45 pm - 7:06 pmIAD-SDF
30h 21m3 stops
6:44 pm - 11:20 amSDF-IAD
40h 36m3 stops
Mon, Dec 23 - Mon, Dec 30

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 Saturday and more expensive on a Sunday. On your return trip to Washington Dulles Airport, you should consider flying back on a Tuesday, and avoid Mondays 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 $189 on average. On the other hand, the most expensive months are October and November, where the average cost of tickets is $343 and $343 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 131 days before departure.

Good to know

Low season

January

High season

May

Cheapest flight

$90
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly and prices are also 7% 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 $179 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 $218 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 $104 or less one-way and $269 or less round-trip.

Prefer to fly non-stop 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.

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 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 8755 reviews
7.3Food
8.2Boarding
7.9Comfort
8.5Crew
7.9Entertainment
Airline reviews

I sat in comfort plus. It was fine. Seats were comfortable. I got drinks and snacks.

8.0 ExcellentAndrew, Nov 2024MCO - LGA
Read more Delta reviews

I sat in comfort plus. It was fine. Seats were comfortable. I got drinks and snacks.

Crew was nice. Flight was timely. Seats could be better as well as the food considering it’s first class.

Left on time and arrived early this extending our 31 minute transfer. Bags made it also!

Good and consistent Printer in lounge did not work for me :(

Most of my discomfort was going through TSA. However, the Delta seats had inadequate leg room and I tried my very best to connect to the wi-fi and it was a cumbersome process that finally gave me the info that I needed to sign in AFTER I had completed the flight...Why make it so difficult to use? That said I really really appreciate the pilot taking a little extra time to avoid a bad storm area and both landings in Atlanta and Orlando were flawless to my delight!!!

Delayed in taking off because no flight crew. The in seat entertainment was working properly.

I upgraded to first class only to find out that I still had no access to the sky lounge without a sky miles card or AmEx (something that should be emphasized outside of the fine print!) Also, no food or drink service provided during the flight, so I basically paid 4x more just for “free” checked baggage and a bigger seat. Not worth it.

Delta was really good about being transparent with why we were delayed it’s just that’s the plane was really old and outdated and a lot of the comfort and amenities we know Delta to have did not shine through

Bottom seat cushion is almost non existent. Very uncomfortable seat.

Delta was great the entertainment was outdated. Screen was very small and didn’t work.

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.

United Airlines changed my flight 5 hours before I arrived at the airport. This messed up my entire day that I arrived in Japan.

Being stick waiting for gate at ORD cause me to almost miss my connecting flight…being deaf United made no no effort to keep me updated as I couldn’t hear the PA

The Economy Plus rows weren’t as roomy as expected, and the meal service left a lot to be desired for.

United ground crew and pilots are friendly. The in-flight staff (flight attendants) are the worst in the world. Multiple trips, always unpleasant, combative, use implicit threats to not allow for a discussion on their decision. Authoritarian. This seems to stem from an internal corporate wide policy as I doubt that United is intentionally searching for people that are not fit for customer facing positions. I will not fly United again. Good luck fixing your business

The flight was mostly on time, smooth and deplaning was quick. Baggage was really quick at the claim. Comfort was so-so and I paid for economy plus. It was still too crowded and why was a family of 5 scattered all around the plane?

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.
1/7Tue
nonstopUnited Airlines
1h 53mIAD-SDF
$90
1/26Sun
1 stopAllegiant Air
15h 18mIAD-SDF
$94
2/8Sat
1 stopDelta
5h 34mIAD-SDF
$99
1/10Fri
1 stopDelta
5h 11mIAD-SDF
$114
12/28Sat
1 stopAmerican Airlines
4h 24mIAD-SDF
$128
1/11Sat
1 stopAmerican Airlines
5h 49mIAD-SDF
$129
2/23Sun
2 stops
17h 09mIAD-SDF
$142
1/6Mon
3 stops
30h 04mIAD-SDF
$176
1/20Mon
3 stopsWestJet
20h 29mIAD-SDF
$415
1/20Mon
3 stopsWestJet
20h 29mIAD-SDF
$416

Search by stops

Search by airline

Search by price

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.
11/24Sun
multi-stop
24h 16mIAD-SDF
11/26Tue
multi-stop
14h 16mSDF-IAD
$509
11/26Tue
nonstopUnited Airlines
1h 54mIAD-SDF
12/2Mon
nonstopUnited Airlines
1h 35mSDF-IAD
$539
11/26Tue
multi-stopUnited Airlines
6h 48mIAD-SDF
12/2Mon
nonstopUnited Airlines
1h 35mSDF-IAD
$549
11/26Tue
multi-stopDelta
4h 32mIAD-SDF
12/2Mon
multi-stopDelta
4h 47mSDF-IAD
$558
11/25Mon
nonstopUnited Airlines
1h 54mIAD-SDF
11/30Sat
nonstopUnited Airlines
1h 35mSDF-IAD
$563
11/25Mon
multi-stopUnited Airlines
5h 05mIAD-SDF
11/30Sat
nonstopUnited Airlines
1h 35mSDF-IAD
$573
11/24Sun
multi-stop
20h 18mIAD-SDF
11/26Tue
multi-stop
14h 16mSDF-IAD
$586
11/23Sat
nonstopUnited Airlines
1h 52mIAD-SDF
11/24Sun
nonstopUnited Airlines
1h 38mSDF-IAD
$589
11/26Tue
multi-stopAmerican Airlines
7h 23mIAD-SDF
12/2Mon
multi-stopAmerican Airlines
3h 35mSDF-IAD
$691
11/25Mon
multi-stopAmerican Airlines
5h 44mIAD-SDF
11/30Sat
multi-stopAmerican Airlines
10h 48mSDF-IAD
$819

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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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