EWR - SDF

$65 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 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
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
$155
Overall average: $289
Spirit Airlines
Mon 2/23Wed 2/25
EWR - SDF • 1 stop
Cheapest non-stop
$209
Typical prices: $273-$501
United Airlines
Fri 4/17Fri 4/24
EWR - SDF • Non-stop
Our travelers' advice
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
Spirit Airlines
Cheapest • from $155 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 9% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 10% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
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+1
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We hope you love your trip to Louisville!
Flight Deals
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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

Mon, Feb 23 - Wed, Feb 25
Spirit Airlines Logo
5:00 am - 12:21 pm
EWR
-
SDF
7h 21m
1 stop
Spirit Airlines Logo
1:19 pm - 11:19 pm
SDF
-
EWR
10h 00m
1 stop
$155Spirit Airlines
Mon, Mar 2 - Wed, Mar 4
Spirit Airlines Logo
5:00 am - 12:21 pm
EWR
-
SDF
7h 21m
1 stop
Spirit Airlines Logo
1:19 pm - 11:19 pm
SDF
-
EWR
10h 00m
1 stop
$165Spirit Airlines
Wed, Mar 4 - Fri, Mar 6
Spirit Airlines Logo
5:00 am - 12:21 pm
EWR
-
SDF
7h 21m
1 stop
Spirit Airlines Logo
1:19 pm - 11:19 pm
SDF
-
EWR
10h 00m
1 stop
$180Spirit Airlines
Tue, Mar 3 - Wed, Mar 4
Spirit Airlines Logo
5:45 am - 2:38 pm
EWR
-
SDF
8h 53m
1 stop
Spirit Airlines Logo
1:19 pm - 11:19 pm
SDF
-
EWR
10h 00m
1 stop
$181Spirit Airlines
Tue, Mar 3 - Thu, Mar 5
Multiple Airlines Logo
10:05 am - 12:21 pm
EWR
-
SDF
26h 16m
1 stop
Multiple Airlines Logo
2:26 pm - 7:59 pm
SDF
-
EWR
5h 33m
1 stop
$182Multiple Airlines
Tue, Mar 3 - Tue, Mar 10
Spirit Airlines Logo
5:45 am - 2:38 pm
EWR
-
SDF
8h 53m
1 stop
Spirit Airlines Logo
3:33 pm - 11:58 pm
SDF
-
EWR
8h 25m
1 stop
$193Spirit Airlines
Mon, Mar 16 - Wed, Mar 18
Spirit Airlines Logo
5:10 am - 11:14 am
EWR
-
SDF
6h 04m
1 stop
Spirit Airlines Logo
12:09 pm - 11:49 pm
SDF
-
EWR
11h 40m
1 stop
$195Spirit Airlines
Mon, Mar 16 - Wed, Mar 18
Spirit Airlines Logo
5:10 am - 11:14 am
EWR
-
SDF
6h 04m
1 stop
Spirit Airlines Logo
12:09 pm - 11:49 pm
SDF
-
EWR
11h 40m
1 stop
$196Spirit Airlines
Tue, Mar 3 - Wed, Mar 4
Spirit Airlines Logo
5:45 am - 2:38 pm
EWR
-
SDF
8h 53m
1 stop
Spirit Airlines Logo
1:19 pm - 8:05 am
SDF
-
EWR
18h 46m
2 stops
$201Spirit Airlines
Tue, Mar 3 - Thu, Mar 5
Multiple Airlines Logo
6:59 pm - 12:21 pm
EWR
-
SDF
17h 22m
2 stops
Multiple Airlines Logo
2:26 pm - 7:59 pm
SDF
-
EWR
5h 33m
1 stop
$204Multiple 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 Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday 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 $286 (return) on average. On the other hand, the most expensive months are December and October, where the average cost of round-trip tickets is $349 and $346 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 9% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 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 seasonSeptember
Cheapest flight$65
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly with an average 3% increase in price.
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 $65 for a one-way ticket and $155 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, JetBlue, American Airlines, 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 $286 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 $342 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 $258 or less one-way and $229 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

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United 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

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United 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 8130 reviews
8.5Crew
7.2Food
7.8Entertainment
8.1Boarding
7.9Comfort
Airline reviews

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

10.0 ExcellentZebrina, Jan 2026
LGA - CAE
Read more Delta reviews

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

The entertainment screens were not working and there was no air condition the entire flight. Very uncomfortable.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

I truly love flying with Delta. They have always treated me with the upmost respect

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.

Survey sent before we actually left. Delay after delay. Now a crew problem.

I love flying with United. Unfortunately, I flew on an older plane with minimal upgraded technology (no Bluetooth functionality or handy charging ports). Otherwise, the flight was great and even arrived early.

They changed my seats after I checked in and I was stressed from the time I saw that information until just before boarding, when the gate attendant fixed it, but it shouldn't have happened. And if it couldn't be prevented, then the people on the phone I spoke with should have done something to help, which they did not, nor did they offer me compensation, just meaningless apologies.

Smooth flight, especially take off and landing, and great crew on board. Really loved the stroopwaffles!

Deplaning was delayed because of Jetbridge equipment issues in MKE, causing an issue on an otherwise great flight.

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.

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

They only offered water for Group 6. Awful announcements from the Crew. Couldn't understand a single word. Barely came by for the trash afterwards. Man, I love water for a premium flight. Wow. Water in a cup.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

The comfort of the seats was great, the crew eased my child’s anxieties and the fact that I had full cans of my beverage choice was great.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

This was a horrible experience. For a first class experience, my chair was held together by 3M tape - and I have a photo. The crew weren’t very attentive, somewhat dismissive and forgot my drink and snack, the chair reclined about 3 inches on a 6-hour cross country flight. I was also not informed that there was no lounge available in Newark airport because of renovations, so all around this was one of the worst experiences and I would actively avoid both American and Alaska Air going forward.

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

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

Our flight was canceled at the last minute after delaying for hours and our whole holiday had to be canceled they could not get another flight next day we had so much planned 3 hotels, Disney tickets, car rental. It was canceled due to cabin crew not showing up.

I knew what I was getting into, but never again. Hour long bag drop. 1.5 hour delay. 1 hr 45 mins sitting on the tarmac after landing. They lost a bunch of bags but luckily not mine. Awful experience.

Boarding was good, clearly explained and efficient. Staff were helpful, I would've liked a place to get coffee that wasn't Starbucks

The flight was cancelled and Spirit said they could not rebook me on another flight for six days. They said they couldn't do anything for another six days.

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

Information on your arrival and departure airports