AUS - SJU

$128 Find Cheap Flights from Austin to San Juan - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Austin to San Juan departing on 10/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$309
Typical prices: $257-$466
United Airlines
Thu 10/29Mon 11/2
AUS - SJU • 2 stops
Cheapest non-stop
$480
JetBlue
Sat 12/19Sat 1/2
AUS - SJU • Non-stop
Top airlines
Cheapest • from $309 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Austin and San Juan. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $211 (round-trip)
Shortest trip • 6h 25m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 12% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 17% price drop
Most popular
Good to know
Good to know
+1
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We hope you love your trip to San Juan!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Austin to San Juan that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Austin to San Juan

Thu, Oct 29 - Mon, Nov 2
United Airlines Logo
9:37 am - 11:36 pm-
12h 59m
United Airlines Logo
7:40 am - 1:17 pm-
7h 37m
$309United Airlines
Fri, Sep 18 - Mon, Sep 21
United Airlines Logo
12:12 pm - 8:38 pm-
7h 26m
United Airlines Logo
7:00 am - 1:12 pm-
7h 12m
$309United Airlines
Tue, Sep 8 - Fri, Sep 11
American Airlines Logo
6:00 am - 6:33 pm-
11h 33m
American Airlines Logo
3:35 pm - 10:36 pm-
8h 01m
$311American Airlines
Tue, Sep 8 - Fri, Sep 11
American Airlines Logo
6:00 am - 6:33 pm-
11h 33m
American Airlines Logo
3:41 pm - 11:16 pm-
8h 35m
$311American Airlines
Fri, Sep 25 - Mon, Sep 28
Frontier Logo
10:58 am - 11:13 pm-
11h 15m
Frontier Logo
7:00 am - 5:48 pm-
35h 48m
$311Frontier
Thu, Sep 10 - Mon, Sep 14
Frontier Logo
10:58 am - 9:35 am-
21h 37m
Frontier Logo
11:23 am - 5:48 pm-
31h 25m
$311Frontier
Sat, Nov 7 - Mon, Nov 16
Southwest Logo
6:40 am - 1:10 pm-
4h 30mnonstop
Southwest Logo
6:10 am - 1:40 pm-
9h 30m
$318Southwest
Sat, Nov 7 - Mon, Nov 16
JetBlue Logo
1:00 pm - 11:04 pm-
8h 04m
JetBlue Logo
5:10 pm - 11:07 pm-
7h 57m
$319JetBlue
Sat, Oct 31 - Sat, Nov 7
JetBlue Logo
1:00 pm - 10:09 pm-
8h 09m
JetBlue Logo
6:25 am - 11:48 am-
7h 23m
$319JetBlue
Sun, Jan 24 - Mon, Feb 8
Southwest Logo
9:10 am - 10:00 pm-
10h 50m
Southwest Logo
6:10 am - 4:40 pm-
12h 30m
$322Southwest
Booking Insights

KAYAK's insights & trends for Austin to San Juan flights

Get data-powered insights and trends into flights from Austin to San Juan to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Austin to San Juan Luis Munoz Marin Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Austin to San Juan Luis Munoz Marin Intl Airport departing in September.

Flight prices are below average for this route right now.

Flights to San Juan Luis Munoz Marin Intl Airport from Austin usually cost between $354 and $490 in September.
The lowest price found in the past 5 days was $309 on United Airlines (Sep 18-Sep 21).

What is the cheapest month to fly from Austin to San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Austin to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Austin to San Juan Luis Munoz Marin Intl Airport is January, where tickets cost $365 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $602 and $521 respectively.

How far in advance should I book a flight from Austin to San Juan Luis Munoz Marin Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Austin to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Austin to San Juan Luis Munoz Marin Intl Airport, you should book around 4 weeks before departure, which saves you about 12% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Expert advice

Expert advice for your flight from Austin to San Juan

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on SJU

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Harriet Baskas

Harriet Baskas

Expert on AUS

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low season

October

Cheapest flight

$128
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 37% increase in price.
Flight from Austin to San Juan

When to book flights from Austin to San Juan

Are your dates flexible? Find out the best times to travel from Austin to San Juan based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Austin to San Juan flights

  • What is the cheapest flight from Austin to San Juan Luis Munoz Marin Intl Airport?

    In the last 5 days, the lowest price for a flight from Austin to San Juan Luis Munoz Marin Intl Airport was $128 for a one-way ticket and $309 for a round-trip.

  • Do I need a passport to fly between Austin and San Juan?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Austin and on arrival in San Juan.

  • Which airports will I be using when flying from Austin to San Juan?

    Austin airport is called Austin Bergstrom and the only airport in San Juan is San Juan Luis Munoz Marin Intl.

  • Which aircraft models fly most regularly from Austin to San Juan?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Austin to San Juan flight route.

  • Which airline alliances offer flights from Austin to San Juan?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Austin and San Juan, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to San Juan from Austin?

    Miami is the most popular layover city among KAYAK users traveling from Austin to San Juan.

  • Which is the best airline for flights from Austin to San Juan, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Austin to San Juan are Southwest and Delta. With an average price for the route of $476 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $355 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Austin to San Juan?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Austin to San Juan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Austin to San Juan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from Austin is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Austin to San Juan?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Juan with an airline and back to Austin with another airline. Booking your flights between Austin and SJU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Austin to San Juan?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Juan from Austin up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Austin to San Juan Luis Munoz Marin Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $178 or less one-way.

Reviews of the top 5 airlines serving from Austin to San Juan

 
See real verified KAYAK customer reviews for airlines flying from Austin to San Juan. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Austin to San Juan? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4222 reviews
8.0Comfort
8.6Crew
7.5Entertainment
7.0Food
8.1Boarding
Airline reviews

Great job! My family doesnt fly often but we felt safe 100%

10.0 ExcellentK, Jun 2026
Read more Southwest reviews

Great job! My family doesnt fly often but we felt safe 100%

The new seat assignment thing is wierd. If you don’t pay for a seat they always assign you a middle seat regardless of how many people are on the flight. Idk… the new company that bought Southwest is trying to make it more profitable, but I’m just not seeing it. The flight attendants aren’t having as much fun anymore. It just feels like the airline is slowly dying. IMO. We shall see if Southwest is the next Toy’s R Us.

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

Fine, but how to board on SW versus othrr airlines, is just lame. Goood staff though and all was solid otherwise.

it was great. the crew is exceptional. the flight was on time.

delta wifi wouldn’t work boarding was not in sequence flight crew spent most of their time on the phone with the lights off pretending no one wanted or needed anything

flight was delayed 4+ hours. there was really no understanding of why? weather? the last hour of delay was post boarding. pilot seat was broken. was that the real reason? nonetheless, long day of inconveniences.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

It was good. The leg room was not great in Row 1.

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

Delay getting into gate in ATL caused delay in bags when getting to BWI, disrupting evening plans with family.

When we checked in my friend and I were sitting seperate. By the time we got to boarding, they automatically switched our seats. I really liked that.

I trust Delta. I travel comfortable. The snacks could improve or could go to something as a little sandwich.

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

The wheelchair service is useless. They live you in different spots, not tell you anything just wait. I waited 30 minutes in Frankfurt when decided to walk the 25 minutes distance. In Budapest nobody came.

Food choices were very limited. Taste of the dishes was average.

My flight was completely full. Making me very stressful with people walking around all the time. I believe airlines can do better for entertain people during the flight.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

The lady who gave me my boarding pass for check in was extremely rude.

Small plane (and thus a bumpy ride), small seats (and a large man next to me), absolutely terrible wifi, and no food options to speak of.

Plane was older and terribly uncomfortable but the leg room was good!

The United website was easy to use and had all the information I needed. I needed to change my flight and it was accomplished easily on line. I was also easily able to upgrade and for a reasonable price. Boarding went smoothly and the flight was in time. The service was good in board but the crew did not seem happy at all. Limited availability of meals - not much choice for purchase and in business class they ran out of one of the meal choices by row 4. .

Flight was well orchestrated, made up time despite circling a bit all good on United. Travelers can just be so into themselves that common courtesy has gone out window for some, but that’s not on United.

Flight was delayed many times. The crew was friendly but you eleven had to buy headphones to access the movies in the plane. $8 is not a lot for one person but it is when you travel with all your family.

Jet blue just had great service overall! Only a little turbulence heading out of Austin, otherwise the jet stream helped the speed of the trip!

JetBlue is always consistent and great, the food is limited in selection, but at least you can grab as much as you want on snacks and drinks at the Blue Locker.

Very well organized both boarding and deplaning. Very satisfied with the service I received.

Flight was on time arrived at the destination 10min early they kept in touch via email

at the time for boarding the lady just call Group A and no other goups and everybody from A to F go inside without the right turn,and when we get in theres no more spsce for carry on , the ones that get in at not correct group from the back occupy our space !!!!! a mess !!!!

The boarding and flight were ok, but there were several painful issues. The flight was 3:20 in the air and almost four hours door to door, but they only had snack packs on the plane. They really need to have food on longer flights or make it clear to everyone that they won’t have food. They also advertise free WiFi, but it did not work for 90% of this flight. Again, almost four hours door to door. If I had known I was flying spirit for JetBlue prices then I would have planned differently.

I think the food / snack service was very poor. tehy could have done better. Evrything else was great

No wifi, not even while close to the continental US or Puerto Rico, no entertainment whatsoever (TVs not working). Totally disappointing.

Wifi screens were great. Both flights were delayed, spending all day flying home and then getting home at 3am ruins the next day also.

It was good overall but when I book my flight and seat through Kayak, AA will at times change those seats during check-in time which I don’t understand why. I always book aisle seats and had to sit at window for my flight to Austin this trip.

Nothing, I wont be flying American Airlines again and will not be recommending anyone to fly American Airlines. It was the worst experience flying I've ever had.

Short hop but nice crew, efficient processes and all very timely

Delayed delayed. Poor professionalism. Our seats changed and we pay for them

The TSA check in took 1.5 hours to get through in Austin and I missed my flights back to DC

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

The plane was broken so we had to change planes.

Uncomfortable seats and flight attendant was rude as she insisted on waking up my husband to ask him if he wanted a drink. When he said that he was sleeping, she replied “without an attitude “. He was seated at 8c

Airlines must do something with overweight people... Maybe reserve a business class seat for them, or you could pay the consequences if someone overweight seat side by side to you in economy.

Everything you need to know for your flight from Austin to San Juan

Other airlines flying to Austin

Flight deals from the most popular airlines with KAYAK users flying the route