San Juan — flights from Louisville to San Juan

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Good to Know

Essential information to help you plan your flight from Louisville to San Juan.

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The best day, time of day, season and booking window for this route.

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Southwest AirlinesSouthwest Airlinesfound Oct 11
11/02/26
5:10 pm
SDFLouisville Muhammad Ali International Airport
6h 55mBWIBaltimore/Washington International Thurgood Marshall Airport
11/03/26
1:05 am
SJULuis Munoz Marin International Airport
11/09/26
12:40 pm
SJULuis Munoz Marin International Airport
12h 45mMCOOrlando International AirportBWIBaltimore/Washington International Thurgood Marshall Airport
11/10/26
12:25 am
SDFLouisville Muhammad Ali International Airport
$383
American AirlinesAmerican Airlinesfound Oct 11
11/02/26
11:08 am
SDFLouisville Muhammad Ali International Airport
9h 5mPHLPhiladelphia International AirportCLTCharlotte Douglas International Airport
11/02/26
9:13 pm
SJULuis Munoz Marin International Airport
11/09/26
10:32 am
SJULuis Munoz Marin International Airport
14h 53mMIAMiami International Airport
11/10/26
12:25 am
SDFLouisville Muhammad Ali International Airport
$391
Southwest AirlinesSouthwest Airlinesfound Oct 11
11/02/26
5:10 pm
SDFLouisville Muhammad Ali International Airport
6h 55mBWIBaltimore/Washington International Thurgood Marshall Airport
11/03/26
1:05 am
SJULuis Munoz Marin International Airport
11/09/26
12:40 pm
SJULuis Munoz Marin International Airport
12h 45mMCOOrlando International AirportBWIBaltimore/Washington International Thurgood Marshall Airport
11/10/26
12:25 am
SDFLouisville Muhammad Ali International Airport
$383
American AirlinesAmerican Airlinesfound Oct 11
11/02/26
11:08 am
SDFLouisville Muhammad Ali International Airport
10h 31mPHLPhiladelphia International AirportMIAMiami International Airport
11/02/26
10:39 pm
SJULuis Munoz Marin International Airport
11/09/26
10:32 am
SJULuis Munoz Marin International Airport
14h 53mMIAMiami International Airport
11/10/26
12:25 am
SDFLouisville Muhammad Ali International Airport
$391
Flight plus hotel
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Book a flight & hotel together for extra savings.

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Southwest AirlinesSouthwest Airlinesfound Oct 11
11/02/26
11:50 am
SDFLouisville Muhammad Ali International Airport
8h 0mMCOOrlando International Airport
11/02/26
8:50 pm
SJULuis Munoz Marin International Airport
11/09/26
12:40 pm
SJULuis Munoz Marin International Airport
12h 45mMCOOrlando International AirportBWIBaltimore/Washington International Thurgood Marshall Airport
11/10/26
12:25 am
SDFLouisville Muhammad Ali International Airport
$383
American AirlinesAmerican Airlinesfound Oct 11
11/02/26
11:08 am
SDFLouisville Muhammad Ali International Airport
11h 51mPHLPhiladelphia International Airport
11/02/26
11:59 pm
SJULuis Munoz Marin International Airport
11/09/26
10:32 am
SJULuis Munoz Marin International Airport
14h 53mMIAMiami International Airport
11/10/26
12:25 am
SDFLouisville Muhammad Ali International Airport
$391
Southwest AirlinesSouthwest Airlinesfound Oct 11
11/02/26
11:50 am
SDFLouisville Muhammad Ali International Airport
8h 0mMCOOrlando International Airport
11/02/26
8:50 pm
SJULuis Munoz Marin International Airport
11/09/26
12:40 pm
SJULuis Munoz Marin International Airport
12h 45mMCOOrlando International AirportBWIBaltimore/Washington International Thurgood Marshall Airport
11/10/26
12:25 am
SDFLouisville Muhammad Ali International Airport
$383
American AirlinesAmerican Airlinesfound Oct 11
11/02/26
7:30 am
SDFLouisville Muhammad Ali International Airport
15h 29mPHLPhiladelphia International Airport
11/02/26
11:59 pm
SJULuis Munoz Marin International Airport
11/09/26
10:32 am
SJULuis Munoz Marin International Airport
14h 53mMIAMiami International Airport
11/10/26
12:25 am
SDFLouisville Muhammad Ali International Airport
$391
American AirlinesAmerican Airlinesfound Oct 11
11/02/26
7:10 am
SDFLouisville Muhammad Ali International Airport
16h 6mDFWDallas Fort Worth International Airport
11/03/26
12:16 am
SJULuis Munoz Marin International Airport
11/09/26
10:32 am
SJULuis Munoz Marin International Airport
14h 53mMIAMiami International Airport
11/10/26
12:25 am
SDFLouisville Muhammad Ali International Airport
$391
American AirlinesAmerican Airlinesfound Oct 14
11/18/26
6:04 am
SDFLouisville Muhammad Ali International Airport
5h 59mCLTCharlotte Douglas International Airport
11/18/26
1:03 pm
SJULuis Munoz Marin International Airport
11/25/26
7:05 am
SJULuis Munoz Marin International Airport
17h 9mCLTCharlotte Douglas International Airport
11/25/26
11:14 pm
SDFLouisville Muhammad Ali International Airport
$396

Top Deals on flights from Louisville to San Juan

Louisville, US (SDF) - San Juan, PR (SJU)

Southwest AirlinesSouthwest Airlines

Nov 1

6:10 pm
SDFLouisville Muhammad Ali International Airport
5h 45m1 stop · MCO

Nov 2

12:55 am
SJULuis Munoz Marin International Airport
Search More

as low as

$190

Louisville, US (SDF) - San Juan, PR (SJU)

Southwest AirlinesSouthwest Airlines

Nov 1

5:10 pm
SDFLouisville Muhammad Ali International Airport
6h 55m1 stop · BWI

Nov 2

1:05 am
SJULuis Munoz Marin International Airport
Search More

as low as

$190

Louisville, US (SDF) - San Juan, PR (SJU)

American AirlinesAmerican Airlines

Nov 1

5:00 am
SDFLouisville Muhammad Ali International Airport
7h 39m1 stop · CLT

Nov 1

1:39 pm
SJULuis Munoz Marin International Airport
Search More

as low as

$193

Louisville, US (SDF) - San Juan, PR (SJU)

American AirlinesAmerican Airlines

Nov 1

5:00 am
SDFLouisville Muhammad Ali International Airport
9h 52m1 stop · CLT

Nov 1

3:52 pm
SJULuis Munoz Marin International Airport
Search More

as low as

$193

Louisville, US (SDF) - San Juan, PR (SJU)

American AirlinesAmerican Airlines

Nov 1

11:08 am
SDFLouisville Muhammad Ali International Airport
11h 51m1 stop · PHL

Nov 1

11:59 pm
SJULuis Munoz Marin International Airport
Search More

as low as

$193

Louisville, US (SDF) - San Juan, PR (SJU)

American AirlinesAmerican Airlines

Nov 1

8:32 am
SDFLouisville Muhammad Ali International Airport
11h 57m1 stop · CLT

Nov 1

9:29 pm
SJULuis Munoz Marin International Airport
Search More

as low as

$193

Louisville, US (SDF) - San Juan, PR (SJU)

American AirlinesAmerican Airlines

Nov 1

8:22 am
SDFLouisville Muhammad Ali International Airport
14h 54m1 stop · DFW

Nov 2

12:16 am
SJULuis Munoz Marin International Airport
Search More

as low as

$193

Louisville, US (SDF) - San Juan, PR (SJU)

American AirlinesAmerican Airlines

Nov 1

7:47 am
SDFLouisville Muhammad Ali International Airport
15h 12m1 stop · PHL

Nov 1

11:59 pm
SJULuis Munoz Marin International Airport
Search More

as low as

$193

Louisville, US (SDF) - San Juan, PR (SJU)

American AirlinesAmerican Airlines

Nov 1

5:00 am
SDFLouisville Muhammad Ali International Airport
15h 29m1 stop · CLT

Nov 1

9:29 pm
SJULuis Munoz Marin International Airport
Search More

as low as

$193

Louisville, US (SDF) - San Juan, PR (SJU)

American AirlinesAmerican Airlines

Nov 1

6:01 am
SDFLouisville Muhammad Ali International Airport
17h 15m1 stop · DFW

Nov 2

12:16 am
SJULuis Munoz Marin International Airport
Search More

as low as

$193

Louisville, US (SDF) - San Juan, PR (SJU)

Southwest AirlinesSouthwest Airlines

Nov 1

5:35 pm
SDFLouisville Muhammad Ali International Airport
15h 55m2 stops · BNA, MCO

Nov 2

10:30 am
SJULuis Munoz Marin International Airport
Search More

as low as

$195

Louisville, US (SDF) - San Juan, PR (SJU)

Southwest AirlinesSouthwest Airlines

Nov 1

5:35 pm
SDFLouisville Muhammad Ali International Airport
17h 15m2 stops · BNA, MCO

Nov 2

11:50 am
SJULuis Munoz Marin International Airport
Search More

as low as

$195

Best San Juan Hotel + Flight Packages

Louisville - San Juan packages

Best San Juan Hotel + Flight + Car Packages

Louisville - San Juan packages

When is the cheapest time to fly?

Cheapest in late January at about $406

Fares from Louisville to San Juan are lowest in late January, around $406, and September is the cheapest month overall, averaging $419. They peak in late December at about $536, $130 more than the low. The yearly average is $458.

JanFebMarAprMayJunJulAugSepOctNovDec$0$100$200$300$400$500$600
Show the data
When is the cheapest time to fly?
MonthAverage fareEarly monthLate month
January$422$439$406
February$432$421$444
March$485$477$492
April$462$481$443
May$454$434$472
June$498$493$503
July$496$505$488
August$444$459$429
September$419$418$420
October$435$437$433
November$447$439$455
December$503$469$536

How far in advance should I book?

Cheapest about 8 weeks out at $383

Book about 8 weeks before departure for the best fares from Louisville to San Juan, around $383. Booking in the final days before the flight costs about $505, $122 more. Booking six months ahead runs about $563.

1w2w1mo2mo3mo4mo5mo$0$100$200$300$400$500$600
Show the data
How far in advance should I book? (selected points, lowest and highest included)
Days before departureAverage fare
180 days$563
172 days$565
166 days$567
164 days$567
156 days$561
148 days$546
140 days$532
132 days$518
124 days$505
116 days$486
108 days$469
100 days$453
92 days$441
84 days$426
76 days$410
68 days$394
2mo$384
58 days$383
52 days$383
44 days$387
36 days$388
28 days$389
20 days$404
12 days$436
4 days$482
0 days$505

What's the cheapest day of the week to fly?

Tuesday is the cheapest day of the week to fly from Louisville to San Juan. At $404 it is 12% cheaper than the average day. Thursday is the most expensive day, 6% above average.

$485Sun$446Mon$404Tue$448Wed$488Thu$461Fri$481Sat
Show the data
What's the cheapest day of the week to fly?
DayAverage fare
Sun$485
Mon$446
Tue$404
Wed$448
Thu$488
Fri$461
Sat$481

When is the best time of day to fly?

Morning (5am - 12pm) is the cheapest time of day to fly from Louisville to San Juan. At $449 it is 4% cheaper than the average time. Afternoon (2pm - 5pm) is the most expensive time, 5% above average.

$449Morning$469Midday$491Afternoon$464Evening
Show the data
When is the best time of day to fly?
Time of dayAverage fare
Morning$449
Midday$469
Afternoon$491
Evening$464

What do round-trip flights from Louisville to San Juan cost?

Share of fares in each price range, adjusted to current prices.

20%$200to $40039%$400to $60022%$600to $80011%$800to $1,0004%$1,000to $1,2002%$1,200to $1,4002%$1,400and up
Show the data
What do round-trip flights from Louisville to San Juan cost?
Price rangeShare of fares
$200 to $40020%
$400 to $60039%
$600 to $80022%
$800 to $1,00011%
$1,000 to $1,2004%
$1,200 to $1,4002%
$1,400 and up2%
Methodology: learn how we calculate these charts

The charts “When is the cheapest time to fly?”, “How far in advance should I book?”, “What's the cheapest day of the week to fly?” and “What do round-trip flights from Louisville to San Juan cost?” are built from the prices Priceline customers actually paid for flights on this route over the past 12 months or more.

Where a route has too few bookings to fill every point in a chart, we borrow the shape of the curve from a group of routes with similar price behavior and fit it to the fares booked on this route.

Because past fares don’t reflect today’s market, we then adjust the historical prices for current conditions such as inflation and fuel costs, using the round-trip fares found in recent searches on this route.

The chart “When is the best time of day to fly?” is calculated directly from the fares found in recent searches, not from historical bookings.

Frequently Asked Questions

Everything you need to know about flying from Louisville to San Juan.

What is the typical flight duration from Louisville to San Juan?

The flight from Louisville to San Juan covers about 1,810 miles. There is no scheduled nonstop service on this route, so the trip requires a connection and no typical flight duration can be given.
Methodology
Flight times and distances come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). The typical flight time is the median scheduled block time across all carriers on the route, computed the same way in both directions so the difference reflects prevailing winds rather than any change in method. Distance is the great-circle distance between the two airports, so the actual flown track is typically 2-5% longer.

Are there any direct flights from Louisville to San Juan?

There are no non-stop flights from Louisville to San Juan. The shortest connecting routing is on American Airlines through Charlotte, taking 6 hours 16 minutes total — a 1 hour 31 minute first leg, a 1 hour 1 minute layover, and a 3 hour 44 minute second leg. United via Washington Dulles (6h 34m) and Southwest via Baltimore (6h 40m) are the next-quickest one-stop options.
Methodology
Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours.

What are the ground transportation options in San Juan?

Luis Muñoz Marín International Airport (SJU) sits about three miles from downtown San Juan, with taxis and ride shares providing the fastest direct connection to the city center. Public buses (AMA) stop on the upper-level roadway outside Terminals A and B, and routes D53 and T5 serve Condado and Old San Juan for under a dollar. Uber and Lyft operate from designated pickup areas, while car rentals are available at the airport for exploring beyond the capital. Taxis are the most-used option, with dozens waiting at the arrivals level and fixed rates to tourist zones.
References

When is the cheapest time to fly from Louisville to San Juan?

Fares from Louisville to San Juan are lowest in late January, around $406. September is the cheapest month overall, averaging $419, followed by January ($422) and February ($432). December is the most expensive month at about $503, and fares peak in late December at about $536. The yearly average is $458. Fares are adjusted to current market conditions.
Methodology
Seasonal fares come from Priceline's own air booking-summary archive, analysed in-house and refreshed monthly. For each day of the year we take a representative round-trip fare, a blend of the 25th-percentile and average ticket price over the route's bookings, and smooth the series into a seasonal curve; the half-month low and high and the monthly figures quoted here are averages of that curve. Thin and international routes borrow their seasonal shape from the nearest busy routes, with the price level anchored to the route's own bookings.

How far in advance should I book tickets from Louisville to San Juan?

Book about 8 weeks before departure for the best fares from Louisville to San Juan, around $383. Booking in the final days before the flight costs about $505, $122 more. Booking six months ahead runs about $563. Fares are adjusted to current market conditions.
Methodology
Booking-window guidance comes from the same monthly in-house analysis of Priceline's own air booking-summary archive. We aggregate the route's bookings by how many days before departure they were made, from about 180 days out to the day of travel, smooth the curve, and highlight the stretch of lead times with the lowest average fare. Thin and international routes borrow the curve shape from the nearest busy routes, anchored to the route's own price level. It reflects current fares and is refreshed monthly.

Are overnight (red‑eye) flights available from Louisville to San Juan?

There are no nonstop red-eye flights from Louisville to San Juan, but connecting itineraries whose overnight leg is a red-eye do operate, all on Southwest via Orlando or Baltimore. The overnight leg typically departs between 20:00 and 22:25, arriving at San Juan between 00:10 and 01:25 — just after midnight or in the early hours, not the next morning.
Methodology
Red-eye flights are identified from scheduled local departure and arrival times and block times in our flight-schedule database — built from published airline timetables and official schedule data, including U.S. Department of Transportation records for domestic routes. A flight counts as a red-eye when it departs in the afternoon or evening (3 p.m. or later local time) or in the early hours before 4 a.m., and is in the air at some point between midnight and 4 a.m. local time at both its departure airport and its arrival airport. An evening flight that lands before midnight at its destination is never counted, nor is a morning departure or a daytime long-haul that reaches the next calendar date only because of time zones. Each red-eye is labelled with its timing (for example, overnight and landing the next morning, or late-night and landing after midnight). For connecting itineraries the same rule is applied to the longer leg, from one representative day's flight search.

Which airlines usually operate this route from Louisville to San Juan?

There is no nonstop service from Louisville to San Juan. American Airlines offers the most one-stop options, typically connecting through Charlotte, Miami, Chicago O'Hare, Dallas/Fort Worth, or Philadelphia, with the quickest routing via Charlotte taking about 6 hours 16 minutes. United Airlines also connects through Washington Dulles, Newark, Chicago O'Hare, or Houston Intercontinental, while Southwest Airlines routes through Baltimore/Washington, Orlando, or Midway. American is a oneworld member, United belongs to Star Alliance, and Southwest is not part of any alliance.
Methodology
Airlines and weekly frequencies come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a typical fare is shown for a carrier, it is the median of the real fares Priceline users found on this route in the last 72 hours.

Which airport should I use in San Juan?

San Juan is served by Luis Muñoz Marín International Airport, the main gateway for Puerto Rico and the only airport in the metro area for commercial flights.

How do I get to Muhammad Ali Intl Airport from the city center?

From downtown Louisville, the TARC local bus system offers an affordable ride to Muhammad Ali International Airport on route 2, which stops right at the terminal. Taxis and ride-share services like Uber and Lyft are the most popular and fastest choices, reaching the airport in about 15 to 20 minutes. Driving yourself is easy too, with a garage, surface lot, and credit card lot for parking near the terminal.
References

Are there hotels or sleeping facilities at San Juan airport?

San Juan Airport has the San Juan Airport Hotel, located in Terminal D on the landside with direct terminal access, so you can walk straight from the gate to your room. There are also several nearby hotels within a 10-minute drive, such as the Courtyard by Marriott Isla Verde Beach about 0.4 miles away and the Embassy Suites by Hilton San Juan about 1 mile away, though these off-airport hotels do not offer airport shuttles. If you are on a layover, you must pass through immigration and security to reach any accommodation, as there is no transit hotel on the airside.
References

What facilities and services are available to travelers at San Juan Luis Munoz Marin International Airport?

San Juan Luis Muñoz Marín International Airport offers a variety of tax-free shops and restaurants, with high-end retail stores concentrated in Terminals B and C. A flight park provides a spot for planespotting and also sells meals. The airport has fast food restaurants along its corridors, and automated baggage scanners are in use. The terminals are all connected post-security, so travelers can move between A, B, C, and D without re-clearing security. Animal relief areas are available, though travelers should see an agent for their location.
References

Are there accessible services or children's facilities at the Louisville and San Juan airports?

Luis Muñoz Marín International Airport offers lifts, ramps, people movers, TDD telephones, disabled toilets, and dedicated parking spaces; travelers requiring wheelchairs or special assistance should contact their airline prior to travel, and the Traveller's Aid desk on the first level of Terminal E can provide assistance.
References

What aircraft are typically used on flights from Louisville to San Juan?

Louisville to San Juan has no nonstop service, so travelers connect through hubs. Southwest operates the most connecting flights with Boeing 737-800s and 737 MAX 8s via Baltimore, Orlando, and other points, while American uses Airbus A321s and A321neos through Charlotte, Dallas, Miami, and Philadelphia. United flies Airbus A321neos and Boeing 737 MAX 9s via Chicago, Houston, Newark, and Washington.
Methodology
Aircraft types come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). For U.S. routes the type is grounded in the tail number that actually operated the flight; elsewhere it comes from the airline's filed equipment code. Where the source does not commit to a specific variant we name the aircraft family (for example Airbus A320 family) rather than guess, and where no reliable type is on file the aircraft is omitted rather than estimated. Types describe typical scheduled equipment and can vary with seasonal or day-of-week assignments and last-minute swaps.

Which airline alliances serve flights from Louisville to San Juan?

Flights from Louisville to San Juan are connecting-only, with American Airlines (oneworld) and United Airlines (Star Alliance) as the major carriers operating the route, while Southwest Airlines also flies it but belongs to no alliance. American and United are the alliances represented here, and other alliances may serve the route via connections without these carriers.
Methodology
Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours.

What are the best airport lounge options when departing from Louisville?

Altitude: A Travelers' Club is the lounge option at Louisville International Airport, offering a welcoming bar with a selection of beverages in a relaxed, upscale setting. It is open Monday through Friday from 9:00 AM to 6:00 PM and is suitable for solo travelers or small groups looking to unwind before a flight. The lounge is located within the airport terminal and can be reached at 502-361-5665. It provides a refined atmosphere ideal for a pre-flight drink, with typical spending around $30–50 per person.
References

Are same‑day changes or standby possible on this route?

Same‑day changes and standby depend on the airline and fare purchased; flexible and premium tickets generally allow them, while Basic Economy does not.