San Juan

$154+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SJU
Jul 24 — Jul 311
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Cheap 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 June 24, 2026.

This Delta deal was found by Cheapflights users on 6/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:15 am
AUS
-
SJU
1 stop7h 27m
Delta
Sat 8/155:49 pm
SJU
-
AUS
1 stop7h 10m
Delta
Deal found 6/19$366
This United Airlines deal was found by Cheapflights users on 6/19. 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 8/57:44 pm
AUS
-
SJU
1 stop8h 45m
United Airlines
Tue 8/111:00 am
SJU
-
AUS
1 stop9h 26m
United Airlines
Deal found 6/19$368
This United Airlines deal was found by Cheapflights users on 6/21. 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.
Thu 8/139:33 am
AUS
-
SJU
2 stops13h 17m
United Airlines
Sun 8/161:00 am
SJU
-
AUS
1 stop9h 26m
United Airlines
Deal found 6/21$369
This American Airlines deal was found by Cheapflights users on 6/23. 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.
Wed 10/215:30 am
AUS
-
SJU
1 stop11h 35m
American Airlines
Mon 10/263:50 pm
SJU
-
AUS
1 stop9h 31m
American Airlines
Deal found 6/23$371
This American Airlines deal was found by Cheapflights users on 6/23. 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.
Mon 9/285:00 am
AUS
-
SJU
2 stops14h 47m
American Airlines
Wed 10/78:35 am
SJU
-
AUS
1 stop15h 16m
American Airlines
Deal found 6/23$373
This United Airlines deal was found by Cheapflights users on 6/20. 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.
Sat 9/55:30 am
AUS
-
SJU
1 stop9h 12m
United Airlines
Sat 9/121:00 am
SJU
-
AUS
2 stops11h 58m
United Airlines
Deal found 6/20$377
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Wed 8/1210:43 am
AUS
-
SJU
1 stop14h 32m
Frontier
Sun 8/166:26 am
SJU
-
AUS
2 stops31h 12m
Frontier
Deal found 6/20$378
This Kiwi.com deal was found by Cheapflights users on 6/21. 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.
Sat 8/81:33 pm
AUS
-
SJU
2 stops25h 38m
Frontier
Tue 8/116:26 pm
SJU
-
AUS
1 stop16h 06m
Frontier
Deal found 6/21$380
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Sun 7/197:44 pm
AUS
-
SJU
1 stop8h 45m
United Airlines
Tue 7/211:00 am
SJU
-
AUS
1 stop9h 01m
United Airlines
Deal found 6/19$384

Find 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 June 24, 2026.

Round-trip from

$366
(Delta)

One-way from

$154
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$484
From Austin Bergstrom to San Juan
One-way flight from Austin Bergstrom to San Juan
Highest demand for flights based on searches. 5% potential increase in price ($26 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Average for round-trip flights in June 2026

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 June 24, 2026.
Use the filters below to find and compare flights from Austin to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Wed 10/21

10:52 am-9:59 pm

1 stop10h 07m

San Juan Luis Munoz Marin Intl

Mon 10/26

5:43 pm-12:32 am

1 stop7h 49m

$366

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Tue 9/8

10:25 am-10:19 pm

1 stop10h 54m

San Juan Luis Munoz Marin Intl

Fri 9/11

12:56 pm-11:13 pm

1 stop11h 17m

$366

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Tue 8/11

10:42 am-10:29 pm

1 stop10h 47m

San Juan Luis Munoz Marin Intl

Mon 8/24

5:49 pm-12:18 am

1 stop7h 29m

$366

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Mon 9/21

12:25 pm-11:05 pm

2 stops9h 40m

San Juan Luis Munoz Marin Intl

Wed 9/30

6:00 am-4:20 pm

2 stops11h 20m

$386

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Tue 10/20

11:35 am-9:40 pm

2 stops9h 05m

San Juan Luis Munoz Marin Intl

Tue 10/27

2:15 pm-10:10 pm

2 stops8h 55m

$386

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Fri 9/18

6:20 am-4:55 pm

2 stops9h 35m

San Juan Luis Munoz Marin Intl

Mon 9/21

5:30 am-8:00 pm

2 stops15h 30m

$386

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sun 8/9

8:45 am-10:45 pm

1 stop13h 00m

San Juan Luis Munoz Marin Intl

Tue 8/11

6:00 am-4:20 pm

2 stops11h 20m

$386

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sat 10/10

6:30 am-7:00 pm

1 stop11h 30m

San Juan Luis Munoz Marin Intl

Fri 10/16

9:45 pm-8:50 am

1 stop12h 05m

$386

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Fri 9/4

12:25 pm-11:05 pm

2 stops9h 40m

San Juan Luis Munoz Marin Intl

Tue 9/8

6:00 am-4:20 pm

2 stops11h 20m

$401

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Wed 10/14

1:30 pm-11:45 pm

2 stops9h 15m

San Juan Luis Munoz Marin Intl

Thu 10/22

12:00 pm-8:15 pm

2 stops9h 15m

$421

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/21

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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

What is the cheapest month to book a flight from Austin to San Juan?

Currently, February is the cheapest month in which you can book a flight from Austin to San Juan (average of $84). Flying from Austin to San Juan in June is currently the most expensive (average of $178). 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 June 24, 2026.

When flying from Austin to San Juan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Austin to San Juan?

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

Booking 86 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.

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 June 24, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited 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.

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Comfort

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

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. 6 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 9h 40m. 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 $138, 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 Delta and American Airlines - these airlines can fly you to your destination from $200 and $225, respectively. You may be able to fly from Austin to San Juan for 67% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Austin to San Juan one-way?

    The cheapest airlines for a one-way flight from Austin to San Juan are Frontier ($104), Southwest ($122), and United Airlines ($122).

  • Where are the most common layover locations when flying 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 Bayside Marketplace. Kaseya Center, Bayfront Park, and Bayside Marketplace are located about 6.2 mi, 6.4 mi, and 6.4 mi, respectively from Miami. Those landing in Miami looking to spend some time exploring during their layover can rent a car for about $23 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 Universal Orlando Resort, Universal's Islands of Adventure, and Dr. Phillips Center for the Performing Arts. Those on a layover in Orlando interested in visiting Universal Orlando Resort, Universal's Islands of Adventure, or Dr. Phillips Center for the Performing Arts can do so by traveling 10.2 mi, 10.2 mi, and 8.5 mi, respectively from Orlando. Those on a layover in Orlando in need of a rental car can book one at Orlando for about $27.

  • Where are the least popular layover locations 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, February is the cheapest month in which you can book a flight from Austin to San Juan (average of $84). Flying from Austin to San Juan in June is currently the most expensive (average of $178). 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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Top 6 airlines flying from Austin to San Juan

Discover the top 6 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 June 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$138Average$309FlexibilityNo cancel feeOn-time62%
DeltaCheapest$200Average$349FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$225Average$450FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$245Average$412FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$257Average$460FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$311Average$548FlexibilityNo cancel feeOn-time62%

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