HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Luis Munoz Marin Intl

$116+ Cheap flights from Austin (AUS) to Luis Munoz Marin Intl (SJU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SJU
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Austin to Luis Munoz Marin Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Austin Bergstrom to San Juan Luis Munoz Marin Intl are usually found in October or September, booked 87 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Austin to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) to Luis Munoz Marin Intl (SJU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$238
(Kiwi.com)

One-way from

$116
(Cheapflightsfares)

Popular in

December

Cheapest in

October

Average price

$375

Good round-trip deal

$776 or less
From Austin Bergstrom to San Juan Luis Munoz Marin Intl
Search Deals
One-way flight from Austin Bergstrom to San Juan Luis Munoz Marin Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a round-trip flight from Austin Bergstrom to San Juan Luis Munoz Marin Intl.
Search Deals

Find flight deals from Austin to Luis Munoz Marin Intl

Cheapest flights from Austin to Luis Munoz Marin Intl
Explore the most affordable flight options available from Austin to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/71:41 pmAUS - SJU
1 stop20h 48mMultiple Airlines
Fri 12/126:00 amSJU - AUS
1 stop16h 41mMultiple Airlines
Deal found 9/14$238
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/71:41 pmAUS - SJU
1 stop20h 48mMultiple Airlines
Mon 12/156:00 amSJU - AUS
1 stop16h 41mMultiple Airlines
Deal found 9/14$239
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2712:15 pmAUS - SJU
1 stop7h 11mUnited Airlines
Wed 10/296:45 amSJU - AUS
1 stop7h 29mUnited Airlines
Deal found 9/15$245
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/71:41 pmAUS - SJU
1 stop20h 48mMultiple Airlines
Sat 12/131:59 amSJU - AUS
1 stop9h 46mMultiple Airlines
Deal found 9/14$250
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:29 pmAUS - SJU
1 stop17h 10mAmerican Airlines
Mon 11/32:47 pmSJU - AUS
1 stop9h 20mAmerican Airlines
Deal found 9/14$251
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/164:30 pmAUS - SJU
1 stop21h 46mMultiple Airlines
Mon 10/209:00 amSJU - AUS
1 stop8h 59mMultiple Airlines
Deal found 9/14$253
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1311:05 amAUS - SJU
1 stop11h 36mFrontier
Sun 11/162:11 amSJU - AUS
1 stop15h 51mFrontier
Deal found 9/13$259
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/234:30 pmAUS - SJU
1 stop21h 46mMultiple Airlines
Mon 10/279:00 amSJU - AUS
1 stop8h 59mMultiple Airlines
Deal found 9/16$263
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/910:34 amAUS - SJU
1 stop12h 58mFrontier
Thu 11/137:30 amSJU - AUS
2 stops19h 13mFrontier
Deal found 9/14$264
This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/182:14 pmAUS - SJU
1 stop9h 40mSpirit Airlines
Sun 10/262:49 amSJU - AUS
1 stop7h 02mSpirit Airlines
Deal found 9/14$265
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/159:44 amAUS - SJU
2 stops13h 13mUnited Airlines
Wed 10/297:30 amSJU - AUS
1 stop9h 21mUnited Airlines
Deal found 9/16$267

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin to Luis Munoz Marin Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Austin to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Austin

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Wed 11/12

11:45 am-11:20 pm

1 stop9h 35m

San Juan Luis Munoz Marin Intl

Tue 11/18

6:40 am-3:25 pm

1 stop10h 45m

$245

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Wed 10/15

9:44 am-11:57 pm

2 stops13h 13m

San Juan Luis Munoz Marin Intl

Wed 10/29

7:30 am-3:51 pm

1 stop9h 21m

$267

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Mon 12/8

6:40 am-5:23 pm

1 stop8h 43m

San Juan Luis Munoz Marin Intl

Mon 12/22

7:30 am-5:23 pm

1 stop11h 53m

$306

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Mon 12/8

5:40 am-5:23 pm

1 stop9h 43m

San Juan Luis Munoz Marin Intl

Wed 12/24

3:30 pm-8:44 pm

1 stop7h 14m

$306

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Tue 10/14

12:17 pm-8:38 pm

1 stop7h 21m

San Juan Luis Munoz Marin Intl

Mon 10/20

1:05 am-1:08 pm

2 stops13h 03m

$327

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Wed 12/10

6:20 am-6:13 pm

1 stop9h 53m

San Juan Luis Munoz Marin Intl

Mon 12/15

6:01 am-2:25 pm

1 stop10h 24m

$333

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sat 11/8

2:20 pm-12:15 am

1 stop7h 55m

San Juan Luis Munoz Marin Intl

Wed 11/12

6:40 am-7:00 pm

2 stops14h 20m

$333

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sat 11/15

7:00 am-12:36 am

2 stops15h 36m

San Juan Luis Munoz Marin Intl

Tue 11/18

2:05 am-1:14 pm

2 stops13h 09m

$335

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Wed 12/10

6:20 am-6:13 pm

1 stop9h 53m

San Juan Luis Munoz Marin Intl

Sun 12/14

6:01 am-2:25 pm

1 stop10h 24m

$363

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Fri 11/14

12:10 pm-12:35 am

2 stops10h 25m

San Juan Luis Munoz Marin Intl

Tue 11/18

6:40 am-7:00 pm

2 stops14h 20m

$365

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 18 results
1
2

Best time to book a flight from Austin to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Austin with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Austin to San Juan Luis Munoz Marin Intl Airport

How far ahead should I book a flight from Austin to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Austin to Luis Munoz Marin Intl. Price data was last updated on September 12, 2025.

Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Austin to San Juan Luis Munoz Marin Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Austin to San Juan Luis Munoz Marin Intl Airport?

Currently, September is the cheapest month in which you can book a flight from Austin to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Austin to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from AUS to SJU?

Find hourly flight availability from Austin to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

It’s typically best to fly out from Austin to San Juan Luis Munoz Marin Intl Airport in the afternoon. Doing so could potentially save you 35% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Austin to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Austin to Luis Munoz Marin Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Austin to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Austin to San Juan Luis Munoz Marin Intl Airport?

Reviews of airlines servicing Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Luis Munoz Marin Intl. Reviews last updated September 16, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Austin to San Juan Luis Munoz Marin Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,957 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,924 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,174 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Austin to Luis Munoz Marin Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Austin to San Juan Luis Munoz Marin Intl?

    Located just 7.5 mi from the city center, Austin Bergstrom is the airport most travelers will use when flying to San Juan Luis Munoz Marin Intl from Austin. Booking flights from Austin Bergstrom (AUS) to San Juan Luis Munoz Marin Intl should be relatively easy as there are 0 daily outbound flights to San Juan Luis Munoz Marin Intl from 7 different airlines.

  • How long is the flight from Austin to San Juan Luis Munoz Marin Intl Airport?

    For as low as $306, Southwest can have you in San Juan Luis Munoz Marin Intl Airport from Austin in 8h 43m. The distance from Austin to San Juan Luis Munoz Marin Intl Airport is about 2142 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Austin to San Juan Luis Munoz Marin Intl Airport round-trip?

    Frontier, at $145, was found to be the cheapest airline from Austin to San Juan Luis Munoz Marin Intl Airport.Alternate airlines to your destination round-trip include Spirit Airlines and Delta. Frontier is currently priced 67% below the average price you’ll pay for this route.

  • What are the cheapest flights from Austin to San Juan Luis Munoz Marin Intl Airport?

    The cheapest flight price from Austin to San Juan Luis Munoz Marin Intl Airport is $397. On average you can expect to pay $1,395. The most popular route, (Austin Bergstrom - San Juan Luis Munoz Marin Intl), can usually be booked for $245.

  • Where are the most common layover locations when flying from Austin to San Juan Luis Munoz Marin Intl Airport?

    Austin to San Juan Luis Munoz Marin Intl Airport flights have a layover in Miami most of the time. Orlando sees the second most layovers for non-direct flights flying from Austin to San Juan Luis Munoz Marin Intl Airport. Atlanta comes in third as the most popular layover location on Austin to San Juan Luis Munoz Marin Intl Airport flights.

  • What are some popular things to do or see while on a layover in Miami?

    Wynwood Art District, Bayfront Park, and Kaseya Center are currently the most popular points of interest in Miami at the moment. Wynwood Art District, Bayfront Park, and Kaseya Center can be visited by traveling about 5.5 mi, 6.4 mi, and 6.2 mi respectively from Miami. Travelers can rent a car at Miami for an average daily rate of $24 to make sightseeing during their layover a little easier.

  • What are some popular points of interest to see during a layover in Orlando?

    Walt Disney World Resort, Universal Orlando Resort, and International Drive are currently the most popular points of interest in Orlando at the moment. Those on a layover in Orlando interested in visiting Walt Disney World Resort, Universal Orlando Resort, or International Drive can do so by traveling 16.2 mi, 10.2 mi, and 9.9 mi, respectively from Orlando. Those landing in Orlando looking to spend some time exploring during their layover can rent a car for about $27 per day.

  • What are points of interest worth seeing during a layover in Atlanta?

    Georgia Aquarium, Tabernacle, and Fox Theatre are currently the most popular points of interest in Atlanta. Georgia Aquarium, Tabernacle, and Fox Theatre can be visited by traveling about 8.6 mi, 8.3 mi, and 9.3 mi respectively from Atlanta Hartsfield-Jackson. Those landing in Atlanta looking to spend some time exploring during their layover can rent a car for about $53 per day.

  • Where are the least popular layover locations for Austin to San Juan Luis Munoz Marin Intl Airport flights?

    Austin to San Juan Luis Munoz Marin Intl Airport flights have a layover in Houston least often. Dallas sees the next fewest layovers on Austin to San Juan Luis Munoz Marin Intl Airport flights. Charlotte comes in third to last in terms of the least popular layover locations on Austin to San Juan Luis Munoz Marin Intl Airport flights.

  • Can I find deals for flights from Austin to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Austin to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Austin to Luis Munoz Marin Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Austin to Luis Munoz Marin Intl.

  • Can I find deals for business class flights from Austin to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Austin to Luis Munoz Marin Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Austin to San Juan Luis Munoz Marin Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Austin to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Austin to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Dorado
Fajardo
Rio Grande
Luquillo
Humacao

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from Austin to Luis Munoz Marin Intl

Discover the top 7 airlines that operate flights from Austin to Luis Munoz Marin Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$145Average$284FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$177Average$337FlexibilityNo cancel feeOn-time65%
DeltaCheapest$248Average$393FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$251Average$449FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$270Average$465FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$275Average$545FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$345Average$696FlexibilityNo cancel feeOn-time62%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.