$46 Find Cheap Flights from Louisville to the United States

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Louisville to the United States departing on 1/9. 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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1 adult, Economy, 0 bags

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Cheap Flights from Louisville to the United States

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
New York
Newarknonstop$209
Orlando
Orlandononstop$109
Los Angeles
Los Angeles1 stop$215
Las Vegas
Las Vegas1 stop$153
Miami
Miami1 stop$197
Chicago
Chicagononstop$101
San Francisco
San Franciscononstop$188
Boston
Boston1 stop$214
Washington, D.C.
Baltimore1 stop$149
Denver
Denvernonstop$145
Seattle
Seattle1 stop$173
Fort Lauderdale
Fort Lauderdalenonstop$86
Atlanta
Atlanta1 stop$177
Dallas
Dallasnonstop$267
Tampa
Tampa1 stop$149
Houston
Houstonnonstop$154
Honolulu
Honolulu2 stops$454
San Diego
San Diego1 stop$159
Philadelphia
Philadelphia1 stop$196
New York
Newarknonstop$209
Orlando
Orlandononstop$109
Los Angeles
Los Angeles1 stop$215
Las Vegas
Las Vegas1 stop$153
Miami
Miami1 stop$197
Chicago
Chicagononstop$101
San Francisco
San Franciscononstop$188
Boston
Boston1 stop$214
Washington, D.C.
Baltimore1 stop$149
Denver
Denvernonstop$145
Seattle
Seattle1 stop$173
Fort Lauderdale
Fort Lauderdalenonstop$86
Atlanta
Atlanta1 stop$177
Dallas
Dallasnonstop$267
Tampa
Tampa1 stop$149
Houston
Houstonnonstop$154
Honolulu
Honolulu2 stops$454
San Diego
San Diego1 stop$159
Philadelphia
Philadelphia1 stop$196

Book Cheap Louisville to the United States Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Louisville to the United States 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 Louisville to the United States

Mon, Nov 10 - Fri, Nov 14
Allegiant Air Logo
7:46 pm - 10:15 pmSDF-FLL
2h 29mnonstop
Allegiant Air Logo
6:30 am - 9:04 amFLL-SDF
2h 34mnonstop
$86Allegiant Air
Find Deal
Mon, Feb 2 - Fri, Feb 6
Allegiant Air Logo
6:54 pm - 9:32 pmSDF-FLL
2h 38mnonstop
Allegiant Air Logo
3:23 pm - 6:04 pmFLL-SDF
2h 41mnonstop
$91Allegiant Air
Find Deal
Thu, Nov 27 - Thu, Nov 27
United Airlines Logo
7:00 am - 7:40 amSDF-ORD
1h 40mnonstop
United Airlines Logo
1:55 pm - 4:27 pmORD-SDF
1h 32mnonstop
$101United Airlines
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Mon, Jan 12 - Tue, Jan 13
Southwest Logo
5:45 pm - 7:55 pmSDF-MCO
2h 10mnonstop
Southwest Logo
8:50 am - 11:10 amMCO-SDF
2h 20mnonstop
$109Southwest
Find Deal
Sat, Dec 6 - Mon, Dec 8
United Airlines Logo
7:00 am - 7:40 amSDF-ORD
1h 40mnonstop
United Airlines Logo
7:55 pm - 10:29 pmORD-SDF
1h 34mnonstop
$127United Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 7
American Airlines Logo
7:38 am - 8:22 amSDF-ORD
1h 44mnonstop
American Airlines Logo
9:50 am - 12:30 pmORD-SDF
1h 40mnonstop
$128American Airlines
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Thu, Nov 13 - Wed, Dec 3
American Airlines Logo
7:25 am - 8:05 amSDF-ORD
1h 40mnonstop
American Airlines Logo
8:20 pm - 10:56 pmORD-SDF
1h 36mnonstop
$133American Airlines
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Mon, Feb 23 - Fri, Feb 27
Southwest Logo
6:40 pm - 10:30 pmSDF-LAS
6h 50m1 stop
Southwest Logo
5:55 pm - 12:30 amLAS-SDF
3h 35mnonstop
$153Southwest
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Sat, Dec 6 - Sun, Dec 7
Delta Logo
10:44 am - 4:22 pmSDF-ORD
6h 38m1 stop
Delta Logo
5:30 am - 12:13 pmORD-SDF
5h 43m1 stop
$161Delta
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Mon, Dec 15 - Thu, Dec 18
Delta Logo
7:15 am - 12:01 pmSDF-ORD
5h 46m1 stop
Delta Logo
9:49 am - 5:16 pmORD-SDF
6h 27m1 stop
$165Delta
Find Deal
Booking Insights

KAYAK's insights & trends for Louisville to the United States flights

Get data-powered insights and trends into flights from Louisville to the United States to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Louisville to the United States flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to the United States from Louisville found in the last 72 hours was to Orlando, at $109 round-trip. The most popular route is from Louisville (SDF) to Atlanta (ATL), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $237.

Can I save money by flying with a layover from Louisville to the United States?

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 $312, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Louisville to the United States?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Louisville to the United States, 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 Louisville to the United States is February, when tickets cost $238 (return) on average. On the other hand, the most expensive months are December and September, when the average cost of round-trip tickets is $362 and $328 respectively.

What’s the cheapest day of the week to fly from Louisville to United States?

The average price of all round-trip flights from Louisville to the United States clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to United States on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Louisville to United States. For your return ticket, we recommend flying on a Wednesday and avoiding Thursdays for the best deals.

Good to know

Low seasonJanuary
Cheapest flight$46
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Louisville to Fort Lauderdale

Flights from Louisville to the United States: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Louisville to the United States 
Verified travelerFlew with American AirlinesSDF-CLTMar 2025
More time should be given between connecting flights. Large distance to travel from Concourse C to Concourse B.
Mike & DebbieFlew with SouthwestSDF-HOUMar 2025
TSA screening backs up over lunch time. A smaller area for Screening slows things down.
RoyceFlew with Spirit AirlinesSDF-FLLJan 2025
Don't get there earlier than two hours, otherwise you'll be waiting to check your bags in Louisville. It's just a tiny airport.
TinaFlew with DeltaSDF-ATLOct 2024
Arrive early so you don’t feel rushed. Mind your assigned zones. I know people want to get onboard as soon as possible because of overhead compartments, but plan ahead in case you need to gate check your bag. And pack your patience. I know that sounds cliched but it’ll help.
Verified travelerFlew with Alaska AirlinesSDF-ORDApr 2024
If flight gets delayed. Be sure to ask the airlines you traveled with, to rebook the next available flight immediately.

FAQs - booking United States flights

  • How does KAYAK find such low prices on flights from Louisville to the United States?

    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 Louisville to the United States.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Louisville to the United States 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 Louisville to the United States?

    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 from Louisville to the United States with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Louisville to the United States?

    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 from Louisville to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to the United States?

    The cheapest time of day to fly to the United States is generally at night, when round-trip flights cost $196 on average. Morning departures are around 24% cheaper than evening flights, on average. The most expensive time of day to fly to the United States is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $518.

Top tips for finding cheap flights to the United States

  • Looking for a cheap flight? 25% of our users found tickets from Louisville to the following destinations at these prices or less: Atlanta $242 one-way - $357 round-trip; Charlotte $189 one-way - $338 round-trip; Chicago $190 one-way - $337 round-trip

Reviews of the top 5 airlines serving from Louisville to the United States

 
Need help choosing which airline to fly with from Louisville to the United States? 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
SouthwestOverall score based on 4237 reviews
8.1Boarding
8.0Comfort
8.6Crew
7.5Entertainment
7.0Food
Airline reviews

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

10.0 ExcellentStacy, Oct 2025SMF - DEN
Read more Southwest reviews

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

mandatory demand customer to check their carry on because not enough people check bags.

Connecting flight is on time and boarding was a breeze!

Excellent. Would encourage Southwest to keep current boarding procedures with free style seating. Makes for a fantastic experience

As always, the entire Southwest experience was perfect. Purchasing the tickets on the Southwest web site was effortless, departure and arrival gates were spotless and comfortable, plane was clean and comfortable, crew was excellent and flight was on time. Wheelchair service in Las Vegas at departure was somewhat chaotic and disjointed, but I am not sure if that was Southwest problem, airport problem or combination.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

On time flight. Seat comfort could be better in the Comfort section.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

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.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

The worst landing I have ever had on a domestic flight. Thought we would lose the landing gear on landing in Newark. Then we spent 40 minutes trying to position the plane in the right place to be able to get the jet way to the plane. The plane arrived stopped. The announcer was that we were there. Everybody got up, then we were told to sit back down because they had to have us towed to a different position. We got towed and then everyone stood up and they told us we were in the wrong position to sit back down again, and then we got towed to a different position This did not happen immediately. It was 30 minutes while we wandered around a small section of the tarmac in Newark close to the gate, but apparently not close enough. Horrifying experience The CAB should be investigating that flight

Boarding was organized. Plane seats comfortable and service was attentive. Food options were good.

This was a very average flight. The seat was out of alignment so more uncomfortable than usual. The cabin felt not well maintained. But I safely got where I needed to go.

Delayed delayed delayed and no offer for food or vouchers

Typically flights with AA are good. The staff are pleasant, welcoming, and efficient.

A couple ladies from the crew were so rude and nasty. Thought they were mad at having to be there especially if you asked a question. This will make me think twice next time if I book a flight with you.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

Poor seat in rear of aircraft Food at Admiral’s Club Terminal D at DFW inedible

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Flight was delayed because of a bird strike. They had another plane available within 45 minutes.

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

Flight attendants on this flight were very attentive and friendly

Great! I intend to use Spirit for future flights. No complaints .

Seats are not very comfortable, maybe a little more padding for a 2hr plus flight

Vegas is such a quick flight that amenities aren’t the important part, in my opinion. Just get me there efficiently and safely, and that’s exactly what they did!

The flight was severely delayed due to the missing flight attendants.

Absolutely horrible. Usually pay $40-$50 to check luggage in. I tried to check my suitcase in and the price is raised to $70. That's ridiculously greedy c'mon. I had to leave my suitcase with all my clothes and hygiene products and repurchase once i landed in Atlanta. You guys make it really stressful to travel. Don't even want to travel anymore.

They cancelled the flight 3 hours prior departure. Had to spend $400 for a ne way flight with Delta Airlines! Spirit Airlines are not serios!

My luggage didn’t arrive at LAX, so that wasn’t a good experience.

Terrible seat, no in flight entertainment. No complimentary food or drinks. Seats really hurt my back after flying spirit for the day.

Plastic seat really hurt my back. Cannot even recline on the flight. Very hard to sleep on the plane due to terrible seats . Food and drinks were expensive and not very good. There were like 2 open exit rows behind me. My isle was full so I asked flight attendants if I could sit there. They told me it was a safety issue??? I think it more unsafe to have no one sitting there. In case of emergency, you’d want someone there to help.

The delays and the lack of communication and organization within the airport itself for Staffing this flight and coordinating the paper log necessary to depart was ridiculous and deplorable

Everything you need to know for your flight from Louisville to the United States

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