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10/31/2026 Find Cheap Flights from Austin to San Juan (AUS to SJU)
AUS - Austin SJU - San Juan 
Find Cheap Flights from Austin to San Juan (AUS to SJU)
Fares Starting from $124
AUS - Austin SJU - San Juan Great deal! This is the lowest price we've seen for this one way route in the last 12 hours. Prices may change and aren't guaranteed for all flights or dates. Click on the price to continue your search and check the latest available fare. Ref. id 202609~Ref:BXOmJFjHMUWCi0pVyLAxKw
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Cheap Flights from Austin to San Juan - Compare & Book Our Best Deals
This route offers great flexibility for different travel plans. Browse one-way fares from $123.98, round-trip fares from $237.65, and other affordable options across different budgets. Compare flight choices, explore schedules, and book the best Austin to San Juan deals that fit your budget and travel preferences.
Top Airlines that fly from Austin to San Juan
AUS Austin Sat, Oct 31
SJU San Juan
from $124
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AUS Austin Thu, Oct 29
SJU San Juan
from $129
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AUS Austin Fri, Oct 30
SJU San Juan
from $129
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AUS Austin Tue, Nov 3
SJU San Juan
from $129
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AUS Austin Sat, Dec 12
SJU San Juan
from $129
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AUS Austin Thu, Dec 3
SJU San Juan
from $129
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AUS Austin Wed, Oct 28
SJU San Juan
from $129
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AUS Austin Mon, Nov 2
SJU San Juan
from $130
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AUS Austin Mon, Nov 30
SJU San Juan
from $192
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AUS Austin Tue, Dec 1
SJU San Juan
from $195
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*All fares above were last found on: Fares are one way/round trip. Fares incl. all fuel surcharges, taxes & fees and our service fees. Displayed fares are subject to change and cannot be guaranteed at the time of booking. See all booking terms and conditions. 202609~Ref:BXOmJFjHMUWCi0pVyLAxKw
When is the Cheapest Time to Book Flights from AUS to SJU?
Explore data-powered insights and trends for flights from Austin to San Juan. Discover average fares, cheap months to fly, when to book, and plan smarter.
What’s the cheapest day of the week to fly from Austin to San Juan?‡
What is the cheapest month to fly from Austin to San Juan?‡
‡This information is based on historical data from the last 365 days.
Finding Affordable Flights from Austin to San Juan
- Plan Ahead - One of the keys to securing cheap flights from Austin to San Juan is to plan your trip well in advance. Airlines often offer lower prices for those who book tickets months ahead. Keep an eye on special promotions and sales events, which can yield significant savings.
- Flexibility is Key - Being flexible with your travel dates can also lead to substantial cost savings. Consider flying during off-peak seasons or on weekdays when prices tend to be lower.
- Set Price Alerts - To keep tabs on flight prices, consider setting up fare alerts. These alerts will notify you when fares from Austin to San Juan drop, giving you the opportunity to grab cheap deals.
- Consider Nearby Airports - If San Juan has multiple airports, check the prices at each one. Sometimes, flying into a nearby airport and then taking a short train or bus ride to your destination can be a much cheaper option.
- Bundle and Save - Booking your flight and accommodation together as a package can often result in significant savings. CheapOair offers these bundled deals, so make sure to explore this option.
When should I book flights from AUS to SJU? ‡
‡Got flexible travel dates? Use our flight data from the past year to discover ideal time to fly from Austin to San Juan. Find out which months and days typically offer lower fares and let CheapOair search for the best options.
CheapOair provides the predicted prices for one-way trips or round-trips with a duration of 7 days for domestic and 14 days for international trips based on historical data and available flight information. Graphs are estimates only. Prices are subject to change and can't be guaranteed until ticketed.
Estimated price for
Round-trip
‡Graphs are estimates only. Based on historical data and available flight information. Prices are subject to change and cannot be guaranteed until ticketed.
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Cheap Flights from Austin to San Juan
Looking for flights from Austin to San Juan? Look no more, for you�re at the right place. Book cheap flights from Austin to San Juan on CheapOair and enjoy great discounts. Whether its leisure or a business trip, we offer the most competitive rates on flight tickets to destinations around the world. Grab AUS to SJU flight deals on CheapOair and save big! Hurry, our cheap rates are not going to last forever, so make your bookings right away!
Airports in Austin
Austin is served by Austin-Bergstrom International Airport. The airport is located about 8 kilometers southeast of Downtown Austin. Austin-Bergstrom International Airport offers flights to several destinations such as Mexico City, Charlotte, Indianapolis, Baltimore, Guadalajara, and more. The Capital Metropolitan Transportation Authority offers Airport Flyer bus services, stopping in Downtown Austin. Other ground transportation options include shuttle, taxi, and car rentals.
Explore San Juan
San Juan is the capital and most populous municipality in the Commonwealth of Puerto Rico. It is the most important seaport in the largest insular territory of the United States. A beautiful city with gorgeous beaches and all classes of cultural attractions, San Juan is replete with beachfront luxury hotels while the downtown San Juan features historic forts, fine dining options, colonial architecture, and much more.
Things to do in San Juan
Old San Juan
Windows to city's rich past, the streets of Old San Juan reflect about 500 years of history. Listed in UNESCO World Heritage Sites, Old San Juan is home to more than 400 beautifully restored colonial buildings now containing restaurants, shops, hotels, museums, and other public buildings.
San Juan Bay
Commonly denoted to as El Morro, San Juan Bay is a designated National Historic Site and a UNESCO World Heritage Site. El Morro Fort, situated on San Juan Bay, is one of the largest Spanish forts in the Caribbean. The imposing fort is a web of outposts, ramps, dungeons, barracks, and tunnels. The way to reach the fort is a sweeping lawn offering incredible views of the sea.
Fort San Cristobal
Fort San Cristobal is the largest fort the Spanish ever built in the New World. It is a captivating fort spread in an area over 27 acres. Fort San Cristobal has five independent units linked by tunnel and moat. Erected between 1634 and 1790, this fort was designed to shield against a land attack.
Best Time to Fly to San Juan
Weather-wise, the best time to visit the city of San Juan is from mid-April to June. During these months, the weather of the city remains soothing and pleasant enough for sightseeing.
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