SJU - SDF

$113 Find Cheap Flights from San Juan 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 San Juan to Louisville departing on 3/10. 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 San Juan 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 San Juan to Louisville, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$226
Overall average: $383
American Airlines
Wed 3/4Mon 3/9
SJU - SDF • 1 stop
Cheapest one-way
$113
Typical prices: $115-$226
American Airlines
Tue 3/10
SJU - SDF • 1 stop
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 35% price drop
January
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
Flight Deals

Cheap Flights from San Juan to Louisville (SJU-SDF)

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

Wed, Mar 4 - Mon, Mar 9
American Airlines Logo
7:00 am - 11:59 pm
SJU
-
SDF
17h 59m1 stop
American Airlines Logo
5:00 am - 8:34 pm
SDF
-
SJU
15h 34m1 stop
$226American Airlines
Fri, Feb 13 - Sun, Feb 15
American Airlines Logo
8:40 am - 12:27 am
SJU
-
SDF
16h 47m1 stop
American Airlines Logo
10:49 am - 11:31 pm
SDF
-
SJU
11h 42m1 stop
$231American Airlines
Wed, Mar 4 - Sun, Mar 8
American Airlines Logo
12:46 pm - 11:05 pm
SJU
-
SDF
11h 19m2 stops
American Airlines Logo
10:49 am - 10:31 pm
SDF
-
SJU
11h 42m1 stop
$266American Airlines
Wed, Mar 25 - Sun, Mar 29
American Airlines Logo
6:00 am - 11:59 pm
SJU
-
SDF
17h 59m1 stop
American Airlines Logo
6:12 pm - 4:24 am
SDF
-
SJU
10h 12m1 stop
$272American Airlines
Fri, May 22 - Tue, May 26
American Airlines Logo
7:20 am - 7:30 pm
SJU
-
SDF
12h 10m1 stop
American Airlines Logo
7:35 am - 11:41 pm
SDF
-
SJU
16h 06m1 stop
$286American Airlines
Fri, Feb 13 - Sun, Feb 15
American Airlines Logo
2:23 pm - 10:43 pm
SJU
-
SDF
9h 20m2 stops
American Airlines Logo
12:07 pm - 5:24 am
SDF
-
SJU
16h 17m1 stop
$293American Airlines
Wed, Jan 21 - Tue, Jan 27
American Airlines Logo
6:00 am - 6:39 pm
SJU
-
SDF
13h 39m1 stop
American Airlines Logo
6:00 am - 3:59 pm
SDF
-
SJU
8h 59m2 stops
$306American Airlines
Fri, Feb 13 - Sun, Feb 15
Spirit Airlines Logo
5:20 am - 12:21 pm
SJU
-
SDF
8h 01m1 stop
Spirit Airlines Logo
3:33 pm - 10:17 am
SDF
-
SJU
17h 44m2 stops
$307Spirit Airlines
Wed, Mar 25 - Sun, Mar 29
American Airlines Logo
7:40 am - 5:12 pm
SJU
-
SDF
9h 32m2 stops
American Airlines Logo
6:12 pm - 4:24 am
SDF
-
SJU
10h 12m1 stop
$343American Airlines
Wed, Mar 25 - Sun, Mar 29
American Airlines Logo
7:40 am - 5:12 pm
SJU
-
SDF
9h 32m2 stops
American Airlines Logo
7:57 pm - 10:40 am
SDF
-
SJU
14h 43m1 stop
$344American Airlines
Booking Insights

KAYAK's insights & trends for San Juan to Louisville flights

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

What is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to Louisville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Juan Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport to Louisville is October, where tickets cost $241 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $461 and $443 respectively.

How far in advance should I book a flight from San Juan Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport to Louisville, you should book around 5 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$113
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly with an average 13% increase in price.
Flight from San Juan to Louisville

When to book flights from San Juan to Louisville

Are your dates flexible? Find out the best times to travel from San Juan 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 San Juan to Louisville flights

  • What is the cheapest flight from San Juan Luis Munoz Marin Intl Airport to Louisville?

    In the last 3 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to Louisville was $113 for a one-way ticket and $226 for a round-trip.

  • Do I need a passport to fly between San Juan and Louisville?

    Yes, you'll most likely have to show a valid passport before boarding the plane in San Juan and on arrival in Louisville.

  • Which airports will I be using when flying from San Juan to Louisville?

    San Juan and Louisville are both served by 1 main airport. You will leave San Juan from San Juan Luis Munoz Marin Intl and will be arriving at Louisville Intl.

  • Which aircraft models fly most regularly from San Juan to Louisville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Juan to Louisville?

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

  • Which is the best airline for flights from San Juan to Louisville, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from San Juan to Louisville are Southwest and Delta. With an average price for the route of $335 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $385 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from San Juan 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 San Juan to Louisville.

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

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

Reviews of the top 4 airlines serving from San Juan to Louisville

 
See real verified KAYAK customer reviews for airlines flying from San Juan 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 San Juan 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.
8.0
SouthwestOverall score based on 4254 reviews
7.5Entertainment
8.1Boarding
8.6Crew
7.0Food
8.0Comfort
Airline reviews

We got exit row seats both flights. Everything was running on time

10.0 ExcellentMaggie, Jan 2026
FAT - LAS
Read more Southwest reviews

We got exit row seats both flights. Everything was running on time

Never went on board this flight. Kayak uses Underpricer (which is a scam business) as it's "customer service provider". This customer service is a classic bait and switch "service". I Got caught in the UnderPricer Bait and switch scam. 14 hours on the phone with people from India with heavy accents and upselling me to useless products. The original sell was a flight on spirit. Then they contact me later, an say after they have my money that the flight is no good as is is only one seat for a party of two. I am still in dispute to get my money back. Went to Spirit direct and had a beautiful vacation. I should never have used Kayak and their rip off artists UnderPricer.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Pretty seamless, just a tad bit late in taking off and landing.

Flight was fine other than there was a gate change that I was not notified of. By chance I happened to check my phone and saw the change, otherwise, we would have missed our connecting flight.

Haven’t flown on SW in years. Flight was on time departing and arriving. Served vegan butter onion flavored pretzels which were bad. Coke served was in a tiny paper cup. Crew was not engaging. Felt like they were going through the motions. Old plane, tight seats and no leg room.

Check-in, Boarding and flight were smooth. All the employees and crew was very nice and funny. They gave the kids crayons and workbooks to keep them occupied which was a big win. I’ve flown Southwest many times and that’s the first time I’ve seen that and it is a great addition.

Flight was on time. Wi-fi was a little spotty/slow. Boarding and exit were efficient.

Okay, not wonderful. Short flight. Wi-fi didn't work properly. Stuck waiting for a gate to open upon arrival for 20 or so minutes.

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

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.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

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.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

I like flying first class, and United has a nice one

Flight was delayed 45 minutes because originating flight was coming from Newark. No complimentary snacks were offered on this 5+ hour flight. No screens for the flight, but movies offered if you had already downloaded the United app (which I hadn't on my ipad). No USB ports, only a flimsy plug-in port near the bottom of the seat that was hard to see and kept coming unplugged.

It was good but only meal served is very less. Meantime good to add rice and chicken in one of meal

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

On the way my flight entertainment wouldn’t work the screen went black and no matter how many times I tried to turn it on it wouldn’t. Food was surprisingly good but the tray tables were tiny so you couldn’t get anything else on the table. The seats hardly go back and are not overly comfortable. Wouldn’t fly United again.

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

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

Services, food products, and crew friendliness on American Airlines international flights is mediocre compared to Emirates, Qatar, and Singapore Airways. American does not do much to differentiate its product on international routes. Its menu options are similar on international flights. American Airlines flight attendants do not call elite frequent travelers by their names; American Airlines flight attendants do not seem to be motivated to go above and beyond in the service they provide. American Airlines personnel do not seem to take pride in their work.

The flight was good. We had to spend almost an hour on the tarmac when we arrived in Dallas. Waiting for a gate. What’s the point of arriving early if you have no gate to park at?

Lower WiFi prices; allow us to see our flight on a map; more variety of drink choices.

I was originally scheduled on AA 1763. When I landed in Miami, I went to the counter for flight AA 2115 to try to move my flight to this one. I was in a first class seat on AA 1763. While they moved to me this flight, I was told that there were no other 1st class seats available and they assigned me into coach. However, when I was getting off the plane I noticed that one of the pilots who was also in line to go jump seat - somehow miraculously got a 1st class seat on this flight. It is actually infuriating that I had a paid 1st class seat yet somehow they would move an AA employee ahead of that. At a bare minimum, they should have compensated me for the fare difference and I really think paying customers should ALWAYs get the premiere seats.

So excited very proud first of all I wanna thank kayak all updates very professional and fast alart And amazing cabin crew so nice to me they deserve big salute

UGH I HAD TO MISS MY FIRST FLIGHT TO TAMPA CAUSE OF THE 10 MINUTE DELAY OF THE ORLANDO TO MIAMI ONE SO THEY HAD ME GET ANOTHER TICKET. I AM NOT HAPPY AT ALL BECAUSE IT MADE ME MISS MY CONNECTING FLIGHT FROM TAMPA TO LONDON AND FORCED ME TO MISS A DAY AT MY ROOM IN THE UK.

Wish they didnt delay off-boarding for 10 minutes so i could connect to my flight from miami to tampa

We experienced gate changes and a long delay. My seat was dirty when I boarded and I had to use wipes to clean it myself. There was an unpleasant and overpowering cleaning product scent on the plane as well that lingered through the flight.

Seats were much more cramped then on the 737. Narrower and rows closer together. Flight was absolutely packed and the plugs under the seats didn't work. Was forced to check my bag even though previous flight had no issue with it.

It was fine. My connection in Charlotte to go to WPB was too late and I had to spend the night in the Charlotte Airport in the mini suites.

Everything you need to know for your flight from San Juan to Louisville

Information on your arrival and departure airports