EWR - SDF

$78 Find Cheap Flights from Newark Liberty 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 Newark to Louisville departing on 5/3. 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
1 adult, Economy, 0 bags

KAYAK searches 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 Newark 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 Newark to Louisville, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$231
Overall average: $335
Multiple Airlines
週四 5/7週一 5/11
EWR - SDF • 1 stop
Cheapest non-stop
$239
Typical prices: $276-$464
United Airlines
週三 4/15週六 4/18
EWR - SDF • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus offers 6 inches more legroom.
Spirit's Wi-Fi provides gate-to-gate connectivity.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $239 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines and Spirit Airlines. Average duration is 2h 29m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $195 (round-trip)
Shortest trip • 4h 16m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 13% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 14% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Louisville!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Newark to Louisville (EWR-SDF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Newark 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Newark to Louisville

週四, 5月 7 - 週一, 5月 11
Multiple Airlines Logo
4:23 pm - 6:58 pm
EWR
-
SDF
26h 35m
1 stop
Multiple Airlines Logo
7:48 pm - 6:59 pm
SDF
-
EWR
23h 11m
1 stop
$231Multiple Airlines
週五, 5月 15 - 週一, 5月 18
Multiple Airlines Logo
9:00 am - 6:58 pm
EWR
-
SDF
9h 58m
2 stops
Multiple Airlines Logo
7:48 pm - 11:47 pm
SDF
-
EWR
27h 59m
1 stop
$237Multiple Airlines
週三, 4月 15 - 週六, 4月 18
United Airlines Logo
8:45 pm - 11:12 pm
EWR
-
SDF
2h 27mnonstop
United Airlines Logo
8:47 am - 11:00 am
SDF
-
EWR
2h 13mnonstop
$239United Airlines
週六, 4月 4 - 週六, 4月 11
United Airlines Logo
10:41 am - 1:08 pm
EWR
-
SDF
2h 27mnonstop
United Airlines Logo
8:47 am - 11:00 am
SDF
-
EWR
2h 13mnonstop
$244United Airlines
週五, 5月 15 - 週一, 5月 18
Multiple Airlines Logo
9:00 am - 6:58 pm
EWR
-
SDF
9h 58m
2 stops
Multiple Airlines Logo
7:48 pm - 11:47 pm
SDF
-
EWR
27h 59m
1 stop
$246Multiple Airlines
週五, 4月 24 - 週一, 4月 27
Multiple Airlines Logo
6:00 am - 6:58 pm
EWR
-
SDF
12h 58m
1 stop
Multiple Airlines Logo
7:48 pm - 11:47 pm
SDF
-
EWR
27h 59m
1 stop
$247Multiple Airlines
週五, 5月 29 - 週一, 6月 1
United Airlines Logo
6:00 pm - 8:25 pm
EWR
-
SDF
2h 25mnonstop
United Airlines Logo
6:00 am - 12:22 pm
SDF
-
EWR
6h 22m
1 stop
$249United Airlines
週五, 4月 24 - 週一, 4月 27
Multiple Airlines Logo
10:25 am - 6:58 pm
EWR
-
SDF
8h 33m
1 stop
Multiple Airlines Logo
7:48 pm - 6:00 pm
SDF
-
EWR
22h 12m
1 stop
$251Multiple Airlines
週六, 4月 4 - 週六, 4月 11
United Airlines Logo
1:00 pm - 7:42 pm
EWR
-
SDF
6h 42m
1 stop
United Airlines Logo
8:47 am - 11:00 am
SDF
-
EWR
2h 13mnonstop
$254United Airlines
週五, 5月 29 - 週一, 6月 1
United Airlines Logo
6:00 pm - 8:25 pm
EWR
-
SDF
2h 25mnonstop
United Airlines Logo
6:30 am - 8:38 am
SDF
-
EWR
2h 08mnonstop
$256United Airlines
Booking Insights

KAYAK's insights & trends for Newark to Louisville flights

Get data-powered insights and trends into flights from Newark 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 Newark Liberty Airport to Louisville?

The average price of all round-trip flights from Newark 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 Newark Liberty Airport to Louisville. For your return ticket, we recommend flying on a Friday and avoiding Tuesdays for the best deals.

What is the cheapest month to fly from Newark Airport to Louisville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Newark 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 Newark Airport to Louisville is August, where tickets cost $289 (return) on average. On the other hand, the most expensive months are February and January, where the average cost of round-trip tickets is $398 and $373 respectively.

Can I save money by flying with a layover from Newark 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 1 stop layover the cheapest option at $308 on average.

How far in advance should I book a flight from Newark 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 Newark 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 Newark Airport to Louisville, you should book around 2 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Expert advice

Expert advice for your flight from Newark to Louisville

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Joe Cortez

Joe Cortez

Expert on Spirit Airlines

Joe Cortez is a seasoned managing editor in aviation with over a decade of industry experience. His work has been featured on prominent platforms such as FlyerTalk and TripSavvy, establishing him as a respected voice in aviation journalism.

Good to know

Low seasonJanuary
Cheapest flight$78
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Newark Liberty Airport to Louisville

When to book flights from Newark to Louisville

Are your dates flexible? Find out the best times to travel from Newark 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 Newark Liberty Airport to Louisville flights

  • What is the cheapest flight from Newark Airport to Louisville?

    In the last 3 days, the lowest price for a flight from Newark Airport to Louisville was $78 for a one-way ticket and $231 for a round-trip.

  • Do I need a passport to fly between Newark Liberty Airport and Louisville?

    A passport is not required to fly from Newark Liberty Airport to Louisville.

  • Which airports will I be using when flying from Newark Liberty Airport to Louisville?

    On your way to Louisville, you’ll fly out from Newark. You’ll be landing at Louisville Intl.

  • Which airlines offer Wi-Fi service onboard planes from Newark Liberty Airport to Louisville?

    Delta, American Airlines, JetBlue, and Japan Airlines offer inflight Wi-Fi service on the Newark Liberty Airport to Louisville flight route.

  • Which aircraft models fly most regularly from Newark Liberty Airport to Louisville?

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

  • Which airline alliances offer flights from Newark Liberty Airport to Louisville?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Newark Liberty Airport and Louisville, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Newark Liberty Airport to Louisville?

    There are nonstop flights from Newark Liberty Airport to Louisville on a daily basis.

  • Which is the best airline for flights from Newark to Louisville, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Newark to Louisville are Delta and United Airlines. With an average price for the route of $291 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $349 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Newark Liberty 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 Newark Liberty Airport to Louisville.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Newark Liberty 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 Newark Liberty 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 Newark Liberty Airport with another airline. Booking your flights between Newark Liberty 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 Newark Liberty 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 Newark Liberty Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Newark Airport to Louisville

  • Looking for a cheap flight? 25% of our users found flights on this route for $233 or less one-way and $294 or less round-trip.

Prefer to fly direct from Newark Liberty Airport to Louisville?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Newark to Louisville Intl.
Find which airlines fly direct from Newark Airport to Louisville Intl Airport, which days they fly and book direct flights.

Direct departures

Newark to Louisville Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

Spirit Airlines,United Airlines

Spirit Airlines,United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

Spirit Airlines,United Airlines

Spirit Airlines,United Airlines

See more direct flights

Direct returns

Louisville Intl to Newark

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

Spirit Airlines,United Airlines

Spirit Airlines,United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

Spirit Airlines,United Airlines

Spirit Airlines,United Airlines

See more direct flights

Reviews of the top 4 airlines serving from Newark to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Newark 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 Newark 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.
7.9
DeltaOverall score based on 8288 reviews
7.8Entertainment
7.9Comfort
7.2Food
8.1Boarding
8.5Crew
Airline reviews

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

8.0 ExcellentMary, Mar 2026
LGA - MKE
Read more Delta reviews

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Delayed. Hot. Passenger next to me was so large I couldn’t move.

The flight went very well, but the flight attendants didn't serve and food or drinks other than 1st class due to rough air but to be honest it wasn't that bumpy and I felt that they could've at least offered water and coffee perhaps. Also serving 1st class only is a bad look. I've been in 1st class many times and I would've felt that if the turbulence was too rough for the main cabin, it would be too rough for 1st class too.

There was an unruly family behind us that made the short flight miserable!!! The cabin crew did nothing to contain it.

My seatback screen didn’t work so that sucked because that’s what I was going to do on the plane.

The whole experience was excellent. As it most often is with Delta

There’s not much to say about a one hour flight. This is a connection from LA to RNO that I missed the previous night due to a mechanical check delay on my originating flight from JFK to LAX. The short flight itself was fine. Instructions from the pilot and crew were per usual. The coffee was barely lukewarm, which possibly was purposeful so we would down it quickly. Bags were already on carousel upon reaching baggage claim, which was excellent.

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

Boarding and crew were fantastic, but I paid for a window seat with no window. Seat 11D on a CRJ-900 apparently does not have a window. Lesson learned.

Delta flights recently are always delayed AND at jfk tney get the gates further away (need To walk 20’ to get to them/all the way at the end of the terminal). Not sure whats happening but price doesnt match experience!

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

Short flight, but no drink/snack service. The flights both going and coming were delayed.

Much better than Spirit. I was please by the easy fast check in and boarding

The attendant on board was amazing. She should be doing business/first international long haul.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

There was no inflight service. Once we landed we were delayed to find a gate for an hour and a half which was 1/2 the total time in the air.

The gate got changed several times and the flight was delayed over an hour. Awful experience

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

The gate agent had a really bad attitude and refused to help me get on the standby list. She just handed me a card and said I needed to call a number. I asked her to help with the AA app on my phone and she just shrugged and said she didnt know. After a few phone calls, I eventually just went to a different gate agent on the other side of the terminal and got the help I needed.

No Snacks or Entertainment. The flight was short, snacks should still be given.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

I am very appreciative of the help provided to me by Dennis and Whitney. I had lost my phone at EWR airport and they were very kind in assisting me. This included advice on how to file a report and also helping me connect with family. The pilot was also great about keeping passengers updated on the flight progress with regular communications over the system.

I would like the crew to talk LESS over the PA and specifically about credit card offers. I am trying to work, sleep, watch a movie and the PA was booming about a credit card offer. Could we go back to the days when the customer was more important than selling a credit card?

My seat tv didn’t work the whole trip. And the seat space is too small despite being seated at the front.

On the plus side, crew was attentive, drinks were cold, and in-flight entertainment selection was better than some other airlines. On the negative aide, Plane was delayed almost an hour, either no announcements from the gate crew. Biscoff cookies are gross, appreciate airlines that give a choice. Also, crew had no personality or enthusiasm at all.

I liked the quickness of the boarding process. Things were run smoothly and the staff was very professional. The overall experience was great.

Terrible Flight was cancelled last minute with no other flights available

More comfortable seats, free snacks and soft drinks, some sort of entertainment or WiFi.

That gate is like a ducking shelter at Newark No where to sit Outlets that don’t work Bathrooms that are dirty

Flight was cancelled. But kayak thought it was still on time.

I know Spirit gets a lot of criticism, but I've taken three flights recently and all were very good, and tremendous value. On my most recent one, they randomly assigned me to a very comfortable exit row seat! The flight was on time and the boarding process was smooth, and the crew was friendly. No complaints!

Paid for wifi the day before but wifi was unavailable on flight.

I've flown two Spirit flights recently - boarding for one was somewhat chaotic, with the board listing the wrong flight and causing much confusion; boarding for the other was very smooth and easy. My seat (for which I did not pay extra) was a bit narrow and without great legroom, but it was fine for a NY-Florida trip and was more than worth the low price I paid. The crew was friendly and one flight landed early and the other was only very slightly delayed. All in all a very good experience.

It was the first time I flew on that airline and had a very positive experience. Nearly identical to Jetblue which consider the standard of airlines excellence.

Flight cancelled and no alternative offered for over a week. Ruined our Christmas vacation plans

Everything you need to know for your flight from Newark to Louisville

Information on your arrival and departure airports