EWR - SDF

$146 Find Cheap Flights from Newark Liberty Airport to Louisville - Compare and Save

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 8/18. 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.
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Everything you should know

Cheapest round-trip
$249
Typical prices: $319-$562
United Airlines
Sat 9/26Wed 9/30
EWR - SDF • Non-stop
Cheapest non-stop
$249
Typical prices: $319-$562
United Airlines
Tue 9/1Tue 9/8
EWR - SDF • Non-stop
Top airlines
Cheapest • from $249 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with United Airlines. Average duration is 2h 23m
Direct flights
Direct flights
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Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $319 (round-trip)
Shortest trip • 4h 24m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 36% 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
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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

Sat, Sep 26 - Wed, Sep 30
United Airlines Logo
10:23 am - 12:39 pm
EWR
-
SDF
2h 16mnonstop
United Airlines Logo
1:25 pm - 3:41 pm
SDF
-
EWR
2h 16mnonstop
$249United Airlines
Fri, Nov 13 - Sun, Nov 15
United Airlines Logo
8:56 pm - 11:30 pm
EWR
-
SDF
2h 34mnonstop
United Airlines Logo
6:10 am - 8:26 am
SDF
-
EWR
2h 16mnonstop
$249United Airlines
Sat, Nov 14 - Sun, Nov 15
United Airlines Logo
10:32 am - 1:03 pm
EWR
-
SDF
2h 31mnonstop
United Airlines Logo
6:10 am - 8:26 am
SDF
-
EWR
2h 16mnonstop
$249United Airlines
Thu, Dec 3 - Mon, Dec 7
Delta Logo
3:21 pm - 11:00 pm
EWR
-
SDF
7h 39m
1 stop
Delta Logo
5:59 pm - 12:57 am
SDF
-
EWR
6h 58m
1 stop
$269Delta
Wed, Sep 30 - Sat, Oct 3
Delta Logo
9:48 am - 2:07 pm
EWR
-
SDF
4h 19m
1 stop
Delta Logo
6:00 pm - 11:57 pm
SDF
-
EWR
5h 57m
1 stop
$269Delta
Thu, Aug 27 - Tue, Sep 1
American Airlines Logo
5:29 am - 10:35 am
EWR
-
SDF
5h 06m
1 stop
American Airlines Logo
6:28 am - 1:30 pm
SDF
-
EWR
7h 02m
1 stop
$269American Airlines
Wed, Sep 30 - Sat, Oct 3
American Airlines Logo
2:20 pm - 10:33 pm
EWR
-
SDF
8h 13m
1 stop
American Airlines Logo
5:59 pm - 11:59 pm
SDF
-
EWR
6h 00m
1 stop
$269American Airlines
Fri, Sep 11 - Wed, Sep 16
American Airlines Logo
2:20 pm - 10:33 pm
EWR
-
SDF
8h 13m
1 stop
American Airlines Logo
4:35 pm - 11:59 pm
SDF
-
EWR
7h 24m
1 stop
$269American Airlines
Thu, Sep 17 - Sat, Sep 19
Multiple Airlines Logo
5:55 am - 4:34 pm
EWR
-
SDF
10h 39m
1 stop
Multiple Airlines Logo
10:56 am - 9:24 pm
SDF
-
EWR
10h 28m
2 stops
$324Multiple Airlines
Thu, Nov 5 - Thu, Nov 12
Multiple Airlines Logo
9:55 am - 8:02 am
EWR
-
SDF
22h 07m
2 stops
Multiple Airlines Logo
8:02 pm - 10:27 am
SDF
-
EWR
14h 25m
1 stop
$371Multiple 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 August.

Flight prices are below average for this route right now.

Flights to Louisville from Newark Airport usually cost between $270 and $409 in August.
The lowest price found in the past 5 days was $249 on United Airlines (Aug 27-Aug 29).

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 Mondays 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 $319 (return) on average. On the other hand, the most expensive months are June and March, where the average cost of round-trip tickets is $529 and $490 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.

No, with an average price for the route of $360, prices are generally cheapest when you fly direct.

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 3 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 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.

Good to know

Low season

January

Cheapest flight

$146
Most popular time to fly and prices are also 11% 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 5 days, the lowest price for a flight from Newark Airport to Louisville was $146 for a one-way ticket and $249 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, and JetBlue 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 $348 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $377 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 $268 or less one-way and $319 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 3 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.
7.8
DeltaOverall score based on 8482 reviews
7.8Comfort
8.5Crew
7.8Entertainment
8.1Boarding
7.2Food
Airline reviews

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

2.0 MediocreGrace, Apr 2026
EWR - BOS
Read more Delta reviews

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

The first class flight attendant was awful to everyone. Very rude; no customer service. She should not be working in first class.

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

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.

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!!

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

The woman in seat 1A was allowed to bring a dachshund dog onboard. It smelled terrible and the odor wafted throughout the first class cabin. This was clearly not a service dog and should be prohibited. I paid for the highest class of service, and this was a disservice. Why is Delta allowing this? I may reconsider my future flight choices.

Flights were terribly delayed. I was at At,anta Airport for over 4 hours waiting for my connection.

This flight was ridiculous. I had to have a connecting flight from New York to orlando Florida??? The flight left late and because it was a short flight there was no first class amenities. I had one alcohol drink. The flight crew was fine, but it sure did not feel like first class. Delta to me dropped the ball by giving me a connecting flight. By the time we got to Raleigh we would have missed the next flight. Lucky for me the flight never came so now I was stuck waiting for a later flight that came in late also.

Our flight gor canceled and there was no one to help us but told us to scan the qr code and fill the forms on-line. Very poor service especially we are tourists traveling to Washington DC for the 1st time.

Flight was delayed 5 hours. Updates kept changing. Sears were extremely cramped. Very little leg room. Flight attendant was rushing through with drinks and hit me in the knee either the cart and didn’t apologize. They gave a 15 dollar voucher in airport which doesn’t buy. Much and it was so late that choices were limited.

It's fine but Newark to Nashville was too long

The flight was delayed because they closed several flight ways because of air shows, fire works, etc.

I was exhausted from a long day. The flight was smooth. The first flight during my 3 week travel that took off on time.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

As I wrote earlier, poor planning and/or communication. At least twice, we were told that we would be boarding in less than ten minutes, only to have the flight again delayed at least another hour.

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.

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

The departure and arrival was on time. The fact that I could load my boarding tickets on the American airlines app.

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.

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

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.

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.

Everything was fine. Flight boarded and departed on time. Seating was spacious enough for my carryon to fit under the seat in front of me. No complaints at all. Flight even arrived early.

Boston ticket agent Cheryl Porter is WONDERFUL. Our Iberia flight to Barcelona was cancelled the morning we were scheduled to leave and Cheryl was our super hero - she found us seats on a flight to London and on to Barcelona. Truly a “can-do” attitude which we appreciated so much after the Iberia ticket agents told us there was “absolutely nothing they could do”. (As did the customer service agents at Iberia’s call center) Ms Porter is truly a wonderful person who genuinely cares about travelers!

Nothing wrong on this flight but nothing special. It was oversold and they had to bump people which is always bad.

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

Information on your arrival and departure airports