$118 Cheap Flights from Austin (AUS) to San Juan (SJU)

View $118 flight on Sat, Apr 25, 2026Opens in a new window

Popular airlines from Austin-Bergstrom Intl. Airport (AUS) to Luis Munoz Marin Intl. Airport (SJU)

Cheap Flights from Austin to San Juan (AUS-SJU)

Prices were available within the past 7 days and start at $118 for one-way flights and $229 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Nov 13 - Thu, Nov 20
AUS
Austin
SJU
San Juan
$229 Roundtrip, found 15 hours ago
$229
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Austin to San Juan, returning Thu, Nov 20, priced at $229 found 15 hours ago
Southwest Airlines
Fri, Nov 7 - Sat, Nov 8
AUS
Austin
SJU
San Juan
$235 Roundtrip, found 5 hours ago
$235
Roundtrip
found 5 hours ago
Select Southwest Airlines flight, departing Fri, Nov 7 from Austin to San Juan, returning Sat, Nov 8, priced at $235 found 5 hours ago
Southwest Airlines
Sat, Apr 25 - Sat, May 2
AUS
Austin
SJU
San Juan
$236 Roundtrip, found 2 hours ago
$236
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Sat, Apr 25 from Austin to San Juan, returning Sat, May 2, priced at $236 found 2 hours ago
United
Tue, Dec 9 - Wed, Dec 10
AUS
Austin
SJU
San Juan
$240 Roundtrip, found 5 hours ago
$240
Roundtrip
found 5 hours ago
Select United flight, departing Tue, Dec 9 from Austin to San Juan, returning Wed, Dec 10, priced at $240 found 5 hours ago
United
Wed, Dec 10 - Sat, Dec 13
AUS
Austin
SJU
San Juan
$241 Roundtrip, just found
$241
Roundtrip
just found
Select United flight, departing Wed, Dec 10 from Austin to San Juan, returning Sat, Dec 13, priced at $241 just found
Frontier Airlines
Thu, Nov 6 - Fri, Nov 7
AUS
Austin
SJU
San Juan
$242 Roundtrip, found 5 hours ago
$242
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Nov 6 from Austin to San Juan, returning Fri, Nov 7, priced at $242 found 5 hours ago
United
Wed, Oct 29 - Sat, Nov 8
AUS
Austin
SJU
San Juan
$244 Roundtrip, found 9 hours ago
$244
Roundtrip
found 9 hours ago
Select United flight, departing Wed, Oct 29 from Austin to San Juan, returning Sat, Nov 8, priced at $244 found 9 hours ago
Delta
Tue, Oct 28 - Tue, Nov 4
AUS
Austin
SJU
San Juan
$245 Roundtrip, just found
$245
Roundtrip
just found
Select Delta flight, departing Tue, Oct 28 from Austin to San Juan, returning Tue, Nov 4, priced at $245 just found
American Airlines
Tue, Oct 28 - Tue, Nov 4
AUS
Austin
SJU
San Juan
$245 Roundtrip, just found
$245
Roundtrip
just found
Select American Airlines flight, departing Tue, Oct 28 from Austin to San Juan, returning Tue, Nov 4, priced at $245 just found
American Airlines
Tue, Feb 3 - Fri, Feb 6
AUS
Austin
SJU
San Juan
$247 Roundtrip, just found
$247
Roundtrip
just found
Select American Airlines flight, departing Tue, Feb 3 from Austin to San Juan, returning Fri, Feb 6, priced at $247 just found

Find the cheapest month to fly from Austin (AUS) to San Juan (SJU)

September is typically the cheapest month to fly

From $175 - $265 per traveler.

Alternative airports near San Juan

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Luis Munoz Marin Intl. SJU. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $320
SJU
Luis Munoz Marin Intl.
Cheapest
Average driving time to city center16 min
Flights from $320
Flights from Austin (AUS) to San Juan (SJU)
Origin airport
Austin-Bergstrom Intl.
Destination airport
Luis Munoz Marin Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$229
Distance
2143 mi

Austin to San Juan Flights

The cheapest times to fly from Austin to San Juan

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Austin to San Juan are during the month of November. You can find some of the cheapest flights from Austin to San Juan with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Austin to San Juan

Sunday is one of the best days to book for cheap flights from Austin to San Juan: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Austin to San Juan

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Austin to San Juan in 2025. You can also book with separate airlines for your outbound and return journeys, from $118 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Austin to San Juan flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Austin to San Juan airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Austin-Bergstrom Intl. Airport (AUS) to Luis Munoz Marin Intl. Airport (SJU) cost?
Secure a cheap one-way flight from $118 or cheap return flight from $229 from Austin-Bergstrom Intl. Airport (AUS) to Luis Munoz Marin Intl. Airport (SJU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Austin-Bergstrom Intl. Airport (AUS) to Luis Munoz Marin Intl. Airport (SJU)?
November is the least expensive month to fly from AUS to SJU. Timing your trip outside of the busy season is often the key to finding better deals on flights.
What is the cheapest airline that flies from Austin-Bergstrom Intl. Airport (AUS) to Luis Munoz Marin Intl. Airport (SJU)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest AUS to SJU flight.
How many flights per day from Austin-Bergstrom Intl. Airport (AUS) to Luis Munoz Marin Intl. Airport (SJU)?
Direct flights from Austin-Bergstrom Intl. Airport (AUS) to Luis Munoz Marin Intl. Airport (SJU) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from AUS to SJU?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from AUS to SJU?
Consider traveling with Southwest Airlines if you'd like to fly straight from Austin-Bergstrom Intl. Airport (AUS) to Luis Munoz Marin Intl. Airport (SJU) without any holdups. This airline has the strongest track record for punctuality, with an on-time score of 100%. Want real-time updates? You can check your flight status using the Expedia App.
What is the best time to fly from Austin-Bergstrom Intl. Airport (AUS) to Luis Munoz Marin Intl. Airport (SJU)?
To arrive at Luis Munoz Marin Intl. Airport (SJU) on time, select a flight that leaves from Austin-Bergstrom Intl. Airport (AUS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Austin-Bergstrom Intl. Airport (AUS) to Luis Munoz Marin Intl. Airport (SJU) last-minute?
Last-minute bookings from AUS to SJU are generally more expensive. For the best rates, start looking for flights well in advance. That said, if you're flexible with your travel dates, it's possible to score a cheap ticket right before your trip.
Can I cancel or change the date of my flight from Austin-Bergstrom Intl. Airport (AUS) to Luis Munoz Marin Intl. Airport (SJU)?
If you reserved your AUS to SJU flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you'd like more information.

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*Available to One Key members.