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San Juan

$123+ Cheap flights from Austin (AUS) to San Juan

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 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SJU
nov. 28 — déc. 51
ven. 11/28
ven. 12/5
1 adult, Economy
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Cheapflights Tip: The best prices from Austin Bergstrom to San Juan 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 San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) to San Juan (PR1). 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 octobre 29, 2025.

Round-trip from

$245
(United Airlines)

One-way from

$123
(Delta)

Popular in

December

Cheapest in

October

Average price

$364
From Austin Bergstrom to San Juan
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One-way flight from Austin Bergstrom to San Juan
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Highest demand for flights based on searches. 10% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Austin to San Juan

Cheapest flights from Austin to San Juan
Explore the most affordable flight options available from Austin to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octobre 29, 2025.

This Southwest deal was found by Cheapflights users on 10/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 12/1011:45 amAUS - SJU
1 stop9h 35mSouthwest
mer. 12/1711:20 amSJU - AUS
1 stop12h 40mSouthwest
Deal found 10/27$245
This Frontier deal was found by Cheapflights users on 10/29. 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.
dim. 11/910:34 amAUS - SJU
1 stop12h 58mFrontier
mer. 11/121:59 amSJU - AUS
1 stop10h 11mFrontier
Deal found 10/29$246
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
lun. 12/1510:18 amAUS - SJU
1 stop7h 32mMultiple Airlines
lun. 12/229:37 pmSJU - AUS
1 stop12h 31mMultiple Airlines
Deal found 10/28$248
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
jeu. 11/278:28 pmAUS - SJU
1 stop14h 04mMultiple Airlines
jeu. 12/410:42 amSJU - AUS
1 stop25h 11mMultiple Airlines
Deal found 10/28$250
This Frontier deal was found by Cheapflights users on 10/28. 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.
jeu. 11/206:45 amAUS - SJU
2 stops18h 09mFrontier
sam. 11/229:30 pmSJU - AUS
1 stop12h 38mFrontier
Deal found 10/28$255
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
lun. 12/1510:18 amAUS - SJU
1 stop7h 32mMultiple Airlines
mer. 12/249:37 pmSJU - AUS
1 stop12h 31mMultiple Airlines
Deal found 10/28$259
This Frontier deal was found by Cheapflights users on 10/28. 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.
lun. 11/177:14 pmAUS - SJU
2 stops20h 40mFrontier
jeu. 11/206:01 amSJU - AUS
1 stop12h 11mFrontier
Deal found 10/28$269
This Frontier deal was found by Cheapflights users on 10/28. 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.
dim. 11/910:34 amAUS - SJU
1 stop12h 58mFrontier
sam. 11/152:11 amSJU - AUS
1 stop9h 59mFrontier
Deal found 10/28$271

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin to San Juan 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 octobre 29, 2025.
Use the filters below to find and compare flights from Austin to San Juan that are best for you.

Fly from

Austin

Fly to

San Juan

Route

Depart

Return

Price

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

lun. 12/8

4:25 pm-12:35 am

1 stop6h 10m

San Juan Luis Munoz Marin Intl

ven. 12/12

7:40 am-3:05 pm

2 stops9h 25m

$285

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

jeu. 11/27

12:15 pm-9:26 pm

1 stop7h 11m

San Juan Luis Munoz Marin Intl

mer. 12/3

2:05 am-10:03 am

1 stop9h 58m

$314

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

mar. 1/20

7:05 am-4:36 pm

1 stop7h 31m

San Juan Luis Munoz Marin Intl

sam. 1/24

2:05 am-1:09 pm

2 stops13h 04m

$322

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

jeu. 12/4

6:20 am-6:13 pm

1 stop9h 53m

San Juan Luis Munoz Marin Intl

mar. 12/16

4:26 pm-10:08 pm

1 stop7h 42m

$368

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

mer. 12/10

12:14 pm-10:22 pm

1 stop8h 08m

San Juan Luis Munoz Marin Intl

mer. 12/17

8:30 am-7:52 pm

2 stops13h 22m

$375

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

jeu. 1/8

5:30 am-4:36 pm

1 stop9h 06m

San Juan Luis Munoz Marin Intl

mer. 1/14

2:05 am-10:13 am

1 stop10h 08m

$376

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

sam. 11/8

12:05 pm-11:15 pm

2 stops9h 10m

San Juan Luis Munoz Marin Intl

sam. 11/15

3:10 pm-6:40 pm

Nonstop5h 30m

$391

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

mer. 11/5

10:43 am-10:59 pm

1 stop10h 16m

San Juan Luis Munoz Marin Intl

mar. 11/11

7:00 am-12:36 pm

1 stop7h 36m

$395

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

sam. 11/8

1:40 pm-10:59 pm

1 stop7h 19m

San Juan Luis Munoz Marin Intl

mar. 11/11

7:00 am-2:16 pm

1 stop9h 16m

$395

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

mar. 11/11

12:15 pm-9:26 pm

1 stop7h 11m

San Juan Luis Munoz Marin Intl

ven. 11/14

8:30 am-7:53 pm

2 stops13h 23m

$395

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 18 results
1
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Best time to book a flight from Austin to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan 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

How far ahead should I book a flight from Austin to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Austin to San Juan. Price data was last updated on October 24, 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. 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?

Currently, September is the cheapest month in which you can book a flight from Austin to San Juan (average of $116). Flying from Austin to San Juan in January is currently the most expensive (average of $236). 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 San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octobre 29, 2025.

It’s typically best to fly out from Austin to San Juan in the afternoon. Doing so could potentially save you 37% 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?

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

Travelers seeking maximum savings on their Austin to San Juan flight should consider departing on Thursday mornings 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?

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated octobre 29, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Austin to San Juan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
7.9
Good
7,992 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
8,999 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
11,032 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
3,124 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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 San Juan. 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?

    For a flight from Austin to San Juan, you will be flying from Austin Bergstrom. Austin Bergstrom (AUS) is just 7.5 mi from the center of the city. Austin Bergstrom is the only Austin airport and it handles 0 outbound flights to San Juan per day. 7 airlines have flights to San Juan from Austin Bergstrom on a regular basis.

  • How long is the flight from Austin to San Juan?

    Departing from Austin to San Juan will take you 6h 10m. There are 2142 mi between Austin and San Juan. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Austin to San Juan round-trip?

    Currently priced at $150, Frontier will fly you from Austin to San Juan and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and Delta - these airlines can fly you to your destination from $177 and $233, respectively. You may be able to fly from Austin to San Juan for 66% less than the average price by searching for these airlines.

  • What are the cheapest flights from Austin to San Juan?

    Looking at all options, your cheapest flight can be booked for $158. While the most popular route (Austin Bergstrom - San Juan Luis Munoz Marin Intl) can be booked for $218 on average, our data indicates $383 when flying from Austin to San Juan.

  • Where are the most common layover locations when flying from Austin to San Juan?

    Austin to San Juan flights have a layover in Miami most of the time. Miami is followed by Orlando in terms of the most popular layover location on flights from Austin to San Juan. Atlanta sees the third most layovers on flights from Austin to San Juan.

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

    If you're on a layover in Miami and looking for things to do, consider visiting Kaseya Center, Bayfront Park, or Wynwood Art District. Kaseya Center, Bayfront Park, and Wynwood Art District are located about 6.2 mi, 6.4 mi, and 5.5 mi, respectively from Miami. Those landing in Miami looking to spend some time exploring during their layover can rent a car for about $21 per day.

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

    The majority of Orlando visitors spend their time at Walt Disney World Resort, Universal Orlando Resort, and International Drive. 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 on a layover in Orlando in need of a rental car can book one at Orlando for about $25.

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

    Atlanta travelers tend to visit Georgia Aquarium, Fox Theatre, and Centennial Olympic Park more than any other attractions. Georgia Aquarium, Fox Theatre, and Centennial Olympic Park are located about 8.6 mi, 9.3 mi, and 8.4 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 $59 per day.

  • Where are the least popular layover locations for Austin to San Juan flights?

    Austin to San Juan flights have a layover in Houston least often. Houston is followed by Dallas in terms of the least popular layover location on flights from Austin to San Juan. Dallas is followed by Charlotte in terms of the least popular layover location for Austin to San Juan flights.

  • Can I find deals for flights from Austin to San Juan that include hotel bookings?

    Yes. In addition to deals on Austin to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Austin to San Juan?

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

  • Can I find deals for business class flights from Austin to San Juan?

    Yes. Cheapflights offers flight deals from Austin to San Juan 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?

    Currently, September is the cheapest month in which you can book a flight from Austin to San Juan (average of $116). Flying from Austin to San Juan in January is currently the most expensive (average of $236). 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

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Alternative routes for Austin to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Austin to San Juan

Discover the top 7 airlines that operate flights from Austin to San Juan. 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 octobre 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$150Average$294FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$177Average$338FlexibilityNo cancel feeOn-time65%
DeltaCheapest$233Average$389FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$251Average$446FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$448FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$265Average$532FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$345Average$661FlexibilityNo cancel feeOn-time62%

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