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Cheap flights from Austin to San Juan from $123

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Austin to San Juan departing on 1/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Austin to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
8:50 am - 9:30 pmAUS-SJU
10h 40m1 stop
Southwest Logo
6:40 am - 7:00 pmSJU-AUS
14h 20m2 stops
$245Southwest
Find Deal
Tue, Dec 9 - Wed, Dec 17
Multiple Airlines Logo
10:18 am - 7:50 pmAUS-SJU
7h 32m1 stop
Multiple Airlines Logo
9:37 pm - 8:08 amSJU-AUS
12h 31m1 stop
$248Multiple Airlines
Find Deal
Mon, Dec 15 - Mon, Dec 22
Frontier Logo
10:34 am - 1:32 amAUS-SJU
12h 58m1 stop
Frontier Logo
2:11 am - 10:10 amSJU-AUS
9h 59m1 stop
$249Frontier
Find Deal
Sun, Nov 9 - Sat, Nov 15
Frontier Logo
10:34 am - 1:32 amAUS-SJU
12h 58m1 stop
Frontier Logo
1:59 am - 10:10 amSJU-AUS
10h 11m1 stop
$251Frontier
Find Deal
Sun, Nov 9 - Wed, Nov 12
United Airlines Logo
7:05 am - 4:36 pmAUS-SJU
7h 31m1 stop
United Airlines Logo
2:05 am - 1:09 pmSJU-AUS
13h 04m2 stops
$267United Airlines
Find Deal
Tue, Jan 27 - Sun, Feb 1
Spirit Airlines Logo
5:00 am - 5:19 pmAUS-SJU
10h 19m1 stop
Spirit Airlines Logo
3:37 pm - 10:49 pmSJU-AUS
9h 12m1 stop
$275Spirit Airlines
Find Deal
Sun, Nov 9 - Thu, Nov 13
Spirit Airlines Logo
8:21 pm - 4:23 pmAUS-SJU
18h 02m1 stop
Spirit Airlines Logo
2:21 pm - 11:12 pmSJU-AUS
10h 51m1 stop
$284Spirit Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12
American Airlines Logo
6:09 pm - 10:48 amAUS-SJU
14h 39m1 stop
American Airlines Logo
6:00 am - 3:09 pmSJU-AUS
11h 09m2 stops
$293American Airlines
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Sat, Jan 24 - Sat, Jan 31
American Airlines Logo
5:10 am - 3:59 pmAUS-SJU
8h 49m1 stop
American Airlines Logo
7:00 am - 3:34 pmSJU-AUS
10h 34m2 stops
$303American Airlines
Find Deal
Tue, Jan 13 - Tue, Feb 17
United Airlines Logo
12:15 pm - 9:26 pmAUS-SJU
7h 11m1 stop
United Airlines Logo
2:05 am - 10:03 amSJU-AUS
9h 58m1 stop
$314United Airlines
Find Deal
Thu, Nov 27 - Wed, Dec 3

Spirit Airlines flights from Austin to San Juan

Our best Spirit Airlines deals on Austin to San Juan flight tickets
Spirit Airlines
Nov 9
AUS5:00 amAustin Bergstrom
10h 19m
1 stop
SJU5:19 pmSan Juan Luis Munoz Marin Intl
Nov 13
SJU3:37 pmSan Juan Luis Munoz Marin Intl
9h 12m
1 stop
AUS10:49 pmAustin Bergstrom
$275
Find similar
Spirit Airlines
Jan 8
AUS8:21 pmAustin Bergstrom
18h 02m
1 stop
SJU4:23 pmSan Juan Luis Munoz Marin Intl
Jan 12
SJU2:21 pmSan Juan Luis Munoz Marin Intl
10h 51m
1 stop
AUS11:12 pmAustin Bergstrom
$284
Find similar
Spirit Airlines
Nov 9
AUS5:00 amAustin Bergstrom
10h 19m
1 stop
SJU5:19 pmSan Juan Luis Munoz Marin Intl
Nov 13
SJU3:37 pmSan Juan Luis Munoz Marin Intl
9h 12m
1 stop
AUS10:49 pmAustin Bergstrom
$301
Find similar

Frontier flights from Austin to San Juan

Our best Frontier deals on Austin to San Juan flight tickets
Frontier
Nov 9
AUS10:34 amAustin Bergstrom
12h 58m
1 stop
SJU1:32 amSan Juan Luis Munoz Marin Intl
Nov 15
SJU2:11 amSan Juan Luis Munoz Marin Intl
9h 59m
1 stop
AUS10:10 amAustin Bergstrom
$249
Find similar
Frontier
Nov 9
AUS10:34 amAustin Bergstrom
12h 58m
1 stop
SJU1:32 amSan Juan Luis Munoz Marin Intl
Nov 12
SJU1:59 amSan Juan Luis Munoz Marin Intl
10h 11m
1 stop
AUS10:10 amAustin Bergstrom
$251
Find similar
Frontier
Nov 9
AUS10:34 amAustin Bergstrom
12h 58m
1 stop
SJU1:32 amSan Juan Luis Munoz Marin Intl
Nov 13
SJU4:31 pmSan Juan Luis Munoz Marin Intl
19h 54m
2 stops
AUS10:25 amAustin Bergstrom
$254
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated October 30, 2025.
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

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Tue 12/9

8:50 am-9:30 pm

1 stop10h 40m

San Juan Luis Munoz Marin Intl

Wed 12/17

6:40 am-7:00 pm

2 stops14h 20m

$245

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Mon 12/15

10:18 am-7:50 pm

1 stop7h 32m

San Juan Luis Munoz Marin Intl

Mon 12/22

9:37 pm-8:08 am

1 stop12h 31m

$248

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sun 11/9

10:34 am-1:32 am

1 stop12h 58m

San Juan Luis Munoz Marin Intl

Sat 11/15

2:11 am-10:10 am

1 stop9h 59m

$249

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sun 11/9

10:34 am-1:32 am

1 stop12h 58m

San Juan Luis Munoz Marin Intl

Wed 11/12

1:59 am-10:10 am

1 stop10h 11m

$251

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Tue 1/27

7:05 am-4:36 pm

1 stop7h 31m

San Juan Luis Munoz Marin Intl

Sun 2/1

2:05 am-1:09 pm

2 stops13h 04m

$267

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sun 11/9

5:00 am-5:19 pm

1 stop10h 19m

San Juan Luis Munoz Marin Intl

Thu 11/13

3:37 pm-10:49 pm

1 stop9h 12m

$275

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Thu 1/8

8:21 pm-4:23 pm

1 stop18h 02m

San Juan Luis Munoz Marin Intl

Mon 1/12

2:21 pm-11:12 pm

1 stop10h 51m

$284

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sat 1/24

6:09 pm-10:48 am

1 stop14h 39m

San Juan Luis Munoz Marin Intl

Sat 1/31

6:00 am-3:09 pm

2 stops11h 09m

$293

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Tue 1/13

5:10 am-3:59 pm

1 stop8h 49m

San Juan Luis Munoz Marin Intl

Tue 2/17

7:00 am-3:34 pm

2 stops10h 34m

$303

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Thu 11/27

12:15 pm-9:26 pm

1 stop7h 11m

San Juan Luis Munoz Marin Intl

Wed 12/3

2:05 am-10:03 am

1 stop9h 58m

$314

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Juan from

How to get the cheapest flight ticket from Austin to San Juan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in October, then September is your next best option. Flight prices from Austin to San Juan during September average around $374.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart from Austin to San Juan is on a Wednesday when prices can be found for as low as $412. The most expensive day to fly to San Juan is Saturday, with ticket prices averaging around $588.

What is the cheapest time of day to depart on your flight to San Juan?

The cheapest time of day to fly to San Juan is in the afternoon when flights can be purchased for as low as $396. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $588 on average. Flights to San Juan from Austin in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Austin Bergstrom to San Juan flight route?

Fly from Austin Bergstrom to San Juan Luis Munoz Marin Intl for the best Austin Bergstrom - San Juan flight prices

How far in advance should I book a flight to San Juan?

You are more likely to see cheaper flights to San Juan from Austin when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $446 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Austin for as low as $397 on momondo.

What cabin class options are available on Austin Bergstrom to San Juan flights?

There is only 1 cabin class available to choose from on Austin Bergstrom to San Juan flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Austin to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Austin to San Juan

Fastest flight time

4h 25m

Direct flights

Sun

Airports in San Juan

1 airport
The fastest flight from Austin to San Juan takes 4h 25m
Direct flights go from Austin to San Juan on Sunday. There are no airlines offering direct flights.
There is 1 airport near San Juan: San Juan Luis Munoz Marin Intl (SJU)
Search flight deals

  • How far is Austin Bergstrom to San Juan by plane?

    The straight-line distance from Austin Bergstrom to San Juan is 2141.1 mi. Typically, this will take 6h 47m by plane in normal conditions.

  • When did momondo last update prices for flights from Austin Bergstrom Airport to San Juan?

    Prices for flights from Austin Bergstrom Airport to San Juan refresh daily.

  • How many operators does momondo search for flights from Austin Bergstrom Airport to San Juan?

  • How old do you have to be to fly from Austin Bergstrom Airport to San Juan?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Austin Bergstrom Airport to San Juan.

  • What documentation or ID do you need to fly to San Juan?

    The required travel and health documents for your San Juan trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Juan. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Austin to San Juan

Compare and see reviews for airlines that fly from Austin to San Juan with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $150Free CancellationRating
5.8
3,123 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $177Free CancellationRating
6.3
8,115 reviews
Search Spirit Airlines flights
DeltaPriceFrom $233Free CancellationRating
7.9
7,999 reviews
Search Delta flights
American AirlinesPriceFrom $251Free CancellationRating
7.2
11,034 reviews
Search American Airlines flights
United AirlinesPriceFrom $258Free CancellationRating
7.4
8,996 reviews
Search United Airlines flights
SouthwestPriceFrom $265Free CancellationRating
8.0
4,243 reviews
Search Southwest flights
JetBluePriceFrom $345Free CancellationRating
7.2
2,906 reviews
Search JetBlue flights

Why use momondo?

Why should I use momondo to find a flight deal from Austin to San Juan?

Finding the right flight to San Juan from Austin is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Juan quick and easy, saving you time and money.

Can I find flights from Austin to San Juan with flexible booking policies on momondo?

momondo does allow users to show only those flights to San Juan from Austin which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Austin to San Juan?

momondo provides multiple filters to help you find the best flight to San Juan from Austin. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Austin to San Juan right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Austin to San Juan flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan
San Juan Isla Grande Airport
San Juan Luis Munoz Marin Intl Airport