HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Juan

$113+ 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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SJU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Austin to San Juan 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 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 September 11, 2025.

Round-trip from

$241
(Southwest)

One-way from

$113
(Mytrip)

Popular in

December

Cheapest in

October

Average price

$359
From Austin Bergstrom to San Juan
Search Deals
One-way flight from Austin Bergstrom to San Juan
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($60 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

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 September 11, 2025.

This Southwest deal was found by Cheapflights users on 9/9. 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.
Thu 10/3011:45 amAUS - SJU
1 stop12h 00mSouthwest
Sat 11/83:10 pmSJU - AUS
Nonstop5h 30mSouthwest
Deal found 9/9$241
This Delta deal was found by Cheapflights users on 9/9. 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.
Thu 12/1110:59 amAUS - SJU
1 stop10h 11mDelta
Mon 12/227:30 amSJU - AUS
1 stop11h 53mDelta
Deal found 9/9$245
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/181:43 pmAUS - SJU
1 stop9h 11mAmerican Airlines
Tue 10/217:00 amSJU - AUS
1 stop11h 34mAmerican Airlines
Deal found 9/10$246
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Fri 10/2410:17 pmAUS - SJU
1 stop21h 23mMultiple Airlines
Sun 10/262:12 amSJU - AUS
1 stop14h 50mMultiple Airlines
Deal found 9/10$258
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 9/256:15 pmAUS - SJU
1 stop7h 19mMultiple Airlines
Wed 10/13:19 pmSJU - AUS
1 stop27h 06mMultiple Airlines
Deal found 9/9$260
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Mon 9/295:45 amAUS - SJU
2 stops31h 26mMultiple Airlines
Wed 10/14:51 pmSJU - AUS
1 stop19h 16mMultiple Airlines
Deal found 9/10$262
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 9/2111:03 amAUS - SJU
1 stop11h 20mMultiple Airlines
Wed 10/13:19 pmSJU - AUS
1 stop27h 06mMultiple Airlines
Deal found 9/9$263
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/87:20 amAUS - SJU
2 stops17h 42mMultiple Airlines
Fri 10/104:51 pmSJU - AUS
1 stop18h 06mMultiple Airlines
Deal found 9/10$264
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 10/15:45 amAUS - SJU
2 stops19h 13mMultiple Airlines
Tue 10/76:22 amSJU - AUS
1 stop29h 55mMultiple Airlines
Deal found 9/8$266
This Frontier deal was found by Cheapflights users on 9/9. 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.
Sat 10/47:50 amAUS - SJU
2 stops25h 06mFrontier
Sun 10/512:28 amSJU - AUS
1 stop10h 05mFrontier
Deal found 9/9$267
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/117:20 amAUS - SJU
2 stops17h 42mMultiple Airlines
Fri 10/171:59 amSJU - AUS
1 stop32h 01mMultiple Airlines
Deal found 9/10$269

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 September 11, 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

Thu 10/30

11:45 am-12:45 am

1 stop12h 00m

San Juan Luis Munoz Marin Intl

Sat 11/8

3:10 pm-6:40 pm

Nonstop5h 30m

$241

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sun 10/5

6:30 am-3:50 pm

1 stop8h 20m

San Juan Luis Munoz Marin Intl

Sat 10/11

5:45 am-4:15 pm

1 stop11h 30m

$245

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Thu 11/13

4:25 pm-12:35 am

1 stop6h 10m

San Juan Luis Munoz Marin Intl

Sat 11/22

7:15 pm-12:15 am

1 stop7h 00m

$245

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Fri 11/14

6:12 pm-11:19 am

1 stop15h 07m

San Juan Luis Munoz Marin Intl

Sun 11/16

3:59 am-5:17 pm

1 stop15h 18m

$280

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Wed 11/5

11:45 am-11:20 pm

1 stop9h 35m

San Juan Luis Munoz Marin Intl

Wed 11/12

8:55 am-1:50 pm

1 stop6h 55m

$295

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sun 10/19

1:40 pm-9:59 pm

1 stop7h 19m

San Juan Luis Munoz Marin Intl

Thu 10/23

2:31 pm-12:22 am

1 stop10h 51m

$304

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Tue 9/30

9:44 am-11:57 pm

2 stops13h 13m

San Juan Luis Munoz Marin Intl

Tue 10/7

1:05 am-9:59 am

1 stop9h 54m

$320

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sat 9/27

1:28 pm-10:00 pm

1 stop7h 32m

San Juan Luis Munoz Marin Intl

Fri 10/3

5:41 pm-12:13 am

1 stop7h 32m

$320

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Wed 12/10

12:21 pm-9:26 pm

1 stop7h 05m

San Juan Luis Munoz Marin Intl

Tue 12/16

2:05 am-2:11 pm

2 stops14h 06m

$329

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Wed 10/8

2:05 pm-11:57 pm

1 stop8h 52m

San Juan Luis Munoz Marin Intl

Tue 10/14

1:05 am-1:08 pm

2 stops13h 03m

$332

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 18 results
1
2

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 August 29, 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 $254). Flying from Austin to San Juan 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 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 September 11, 2025.

It’s typically best to fly out from Austin to San Juan 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?

Use this chart to determine the cheapest time to fly round-trip from Austin to San Juan. Price data was last updated on October 13, 2024.

Travelers seeking maximum savings on their Austin to San Juan 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?

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 September 11, 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
4,248 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

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
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

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
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

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
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

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
4,248 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

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
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

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 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 12h. 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 $144, 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 $183 and $249, respectively. You may be able to fly from Austin to San Juan for 67% less than the average price by searching for these airlines.

  • 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 Wynwood Art District, Bayfront Park, or Kaseya Center. Wynwood Art District, Bayfront Park, and Kaseya Center are located about 5.5 mi, 6.4 mi, and 6.2 mi, respectively from Miami. Those landing in Miami looking to spend some time exploring during their layover can rent a car for about $26 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 $28.

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

    Atlanta travelers tend to visit Georgia Aquarium, Tabernacle, and Fox Theatre more than any other attractions. Georgia Aquarium, Tabernacle, and Fox Theatre are located 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 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 $254). Flying from Austin to San Juan 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

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.

Alternative routes for Austin to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Luis Munoz Marin Intl flights
Hobby to Luis Munoz Marin Intl flights
George Bush Intcntl to Luis Munoz Marin Intl flights
Austin to Luis Munoz Marin Intl flights
Love Field to Luis Munoz Marin Intl flights
San Antonio to Luis Munoz Marin Intl flights
El Paso to Luis Munoz Marin Intl flights
McAllen to Luis Munoz Marin Intl flights
Midland to Luis Munoz Marin Intl flights
Lubbock to Luis Munoz Marin Intl flights
Harlingen to Luis Munoz Marin Intl flights
Brownsville to Luis Munoz Marin Intl flights
Corpus Christi to Luis Munoz Marin Intl flights
Killeen to Luis Munoz Marin Intl flights
Hobby to Aguadilla flights
Austin to Aguadilla flights
Dallas/Fort Worth to Aguadilla flights
George Bush Intcntl to Culebra flights
Austin to Culebra flights
Dallas/Fort Worth to Vieques flights
Austin to Ponce flights
Austin to Vieques flights
Dallas/Fort Worth to Mayagüez flights
Dallas/Fort Worth to Culebra flights
Austin to Mayagüez flights
San Antonio to Aguadilla flights
Waco to Luis Munoz Marin Intl flights
El Paso to Aguadilla flights
San Antonio to Culebra flights

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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$144Average$282FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$183Average$337FlexibilityNo cancel feeOn-time65%
DeltaCheapest$249Average$393FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$255Average$449FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$278Average$546FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$282Average$468FlexibilityNo cancel feeOn-time69%
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.