EWR - SDF

$97 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 5/13. 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
$254
Typical prices: $557-$267
United Airlines
Fri 5/22Wed 5/27
EWR - SDF • Non-stop
Cheapest one-way
$97
Typical prices: $124-$174
Spirit Airlines
Wed 5/13
EWR - SDF • 1 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 $254 (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 23m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $195 (round-trip)
Shortest trip • 4h 15m (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 19% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 18% price drop
Most popular
Good to know
Good to know
+1
+1
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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

Fri, May 22 - Wed, May 27
United Airlines Logo
8:25 pm - 10:50 pm
EWR
-
SDF
2h 25mnonstop
United Airlines Logo
1:05 pm - 3:28 pm
SDF
-
EWR
2h 23mnonstop
$254United Airlines
Sat, May 16 - Sun, May 31
Spirit Airlines Logo
7:55 pm - 9:28 am
EWR
-
SDF
13h 33m
1 stop
Spirit Airlines Logo
10:33 am - 9:04 am
SDF
-
EWR
22h 31m
1 stop
$255Spirit Airlines
Wed, May 13 - Fri, May 15
Spirit Airlines Logo
2:50 pm - 9:28 am
EWR
-
SDF
18h 38m
2 stops
Spirit Airlines Logo
10:33 am - 11:52 pm
SDF
-
EWR
13h 19m
1 stop
$256Spirit Airlines
Mon, Jul 20 - Mon, Jul 20
Multiple Airlines Logo
7:45 am - 2:36 pm
EWR
-
SDF
6h 51m
1 stop
Multiple Airlines Logo
8:48 pm - 9:03 am
SDF
-
EWR
12h 15m
1 stop
$257Multiple Airlines
Wed, May 13 - Fri, May 15
Spirit Airlines Logo
2:50 pm - 9:28 am
EWR
-
SDF
18h 38m
2 stops
Spirit Airlines Logo
10:33 am - 11:52 pm
SDF
-
EWR
13h 19m
1 stop
$258Spirit Airlines
Wed, Sep 30 - Sat, Oct 3
Delta Logo
7:00 am - 1:48 pm
EWR
-
SDF
6h 48m
1 stop
Delta Logo
12:53 pm - 5:47 pm
SDF
-
EWR
4h 54m
1 stop
$259Delta
Sun, May 10 - Sun, May 31
Multiple Airlines Logo
11:36 am - 8:46 am
EWR
-
SDF
21h 10m
1 stop
Multiple Airlines Logo
10:33 am - 9:04 am
SDF
-
EWR
22h 31m
1 stop
$260Multiple Airlines
Wed, May 27 - Fri, May 29
Spirit Airlines Logo
7:55 pm - 9:28 am
EWR
-
SDF
13h 33m
1 stop
Spirit Airlines Logo
10:33 am - 11:52 pm
SDF
-
EWR
13h 19m
1 stop
$261Spirit Airlines
Mon, May 11 - Thu, May 14
Multiple Airlines Logo
6:00 am - 6:58 pm
EWR
-
SDF
12h 58m
1 stop
Multiple Airlines Logo
10:33 am - 5:47 pm
SDF
-
EWR
7h 14m
1 stop
$263Multiple Airlines
Fri, May 22 - Tue, May 26
United Airlines Logo
8:25 pm - 10:50 pm
EWR
-
SDF
2h 25mnonstop
United Airlines Logo
7:52 pm - 12:57 am
SDF
-
EWR
5h 05m
1 stop
$264United 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.

How much is a round-trip flight from Newark Airport to Louisville?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Newark Airport to Louisville departing in May.

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, Monday is the most expensive day to fly from Newark Liberty Airport to Louisville. For your return ticket, we recommend flying on a Saturday 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 March and February, where the average cost of round-trip tickets is $478 and $398 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 19% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 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$97
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 $97 for a one-way ticket and $254 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 $307 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 $368 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 $288 or less one-way and $339 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 8469 reviews
8.5Crew
7.9Comfort
7.8Entertainment
7.2Food
8.1Boarding
Airline reviews

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

2.0 MediocreNicholas, Apr 2026
LGA - CLT
Read more Delta reviews

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

My flight yesterday evening was delayed 3.5 hours with no water or food service. Poor experience

Transparency from pilots, quick boarding and exiting the plane, staff greeted to each and everyone,

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

The crew bent over backwards to thank us for flying and make us comfortable. The food service was quick and efficient. The Captain communicated and said goodbye and thank you as we departed. They really stood out!

Flight delayed. Air broken. Cabin was hot enough to pass out. Delta shuttle’s becoming worse and worse.

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

This was the worse experience. They delayed our flight twice and we still had to find another flight to get home sooner which was alos delayed. Also, the flight attendant named Ginny on DL9890 leaving at 4:13pm on 3/23/26 was extremely rude.

I love Delta the flight attendants were personable and the flight arrived 1/2 earlier thanks expected. All a plus. The gate agent was a bit flustered but even with that I still had a good experience. Her supervisor assisted me.

I am still at the Airport! Delayed Delayed and Delyaed

Flight left on time, arrived early, pleasant staff provided water, coffee, etc. access to bathrooms was reasonable and were well maintained. blankets were available, lots of entertainment options. LUGGAGE SERVICE WAS GREAT. I got my one checked bag quickly and was able to make a bus connection for a 2 hour bus ride saving me from waiting another 1.5 hours.

They promise free wi-fi prior to boarding and then once on board you are informed you have to purchase wifi even after being a mileagePlus member.

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.

Flying in the United States with the major airlines has become so underwhelming. A 2-3hr flight in most other parts of the world with the major carriers of the area comes with newer, CLEANER aircraft and significantly better in flight service in terms of both staff attitude and a actual meal service.

Wifi was spotty. Tray table was very dirty when I sat down.

Flight was extremely hot and they made us check our bags when the space was nowhere near full

Same plane as RDU to LGA — internet not working. Pilot issue of some sort at end of prior flight - I was on same plane for my connection. Late/delayed —

My flight from LGA was cancelled and my rebooked flight from JFK was delayed numerous times. I will now be getting home after 2am.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

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.

They canceled my flight and never told me. There was no follow up email. I had to buy another ticket the day of.

Spirit is awful, and cost me an extra $400. On the flight to the destination they staff was rude and did not even offer water during the flight. On the return flight, while on the way to the terminal, Spirit cancelled the flight. This is the second time this has happened, and I believe they should compensate for the additional cost for incurred for the return flight. Spirit simply offered reimbursement for their cancelled flight, and did not take into consideration the cost for a last-minute flight home. The TSA agents expressed how Spirit often cancels evening/night flights, and shows no concern for the passengers.

My flight with spirit airlines was canceled leaving me stranded until tomorrow.

It was my first time flying with spirit. It was amazing. I loved it.

No WiFi, no outlets to charge phones, no complimentary beverages on a 6 hour flight

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.

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

Information on your arrival and departure airports