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Cheap flights from Austin to San Juan from $178

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 7/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Austin to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
6:35 am - 4:25 pm
AUS
-
SJU
8h 50m
2 stops
Southwest Logo
6:00 am - 4:20 pm
SJU
-
AUS
11h 20m
2 stops
$366Southwest
Wed, Aug 19 - Tue, Aug 25
Frontier Logo
10:50 am - 11:57 pm
AUS
-
SJU
12h 07m
2 stops
Frontier Logo
4:30 pm - 9:48 am
SJU
-
AUS
18h 18m
1 stop
$368Frontier
Sat, Sep 19 - Mon, Sep 21
Frontier Logo
1:33 pm - 2:16 pm
AUS
-
SJU
23h 43m
1 stop
Frontier Logo
6:26 am - 12:38 pm
SJU
-
AUS
31h 12m
2 stops
$369Frontier
Sat, Aug 1 - Thu, Aug 6
Frontier Logo
10:50 am - 11:57 pm
AUS
-
SJU
12h 07m
2 stops
Frontier Logo
6:42 pm - 10:12 am
SJU
-
AUS
16h 30m
1 stop
$370Frontier
Sat, Sep 19 - Sun, Sep 20
American Airlines Logo
6:21 am - 12:15 am
AUS
-
SJU
16h 54m
1 stop
American Airlines Logo
6:27 am - 7:10 pm
SJU
-
AUS
13h 43m
2 stops
$371American Airlines
Sat, Sep 5 - Wed, Sep 9
United Airlines Logo
7:44 pm - 5:29 am
AUS
-
SJU
8h 45m
1 stop
United Airlines Logo
2:05 am - 8:37 am
SJU
-
AUS
7h 32m
1 stop
$372United Airlines
Sun, Aug 9 - Mon, Aug 10
Southwest Logo
11:40 am - 10:10 pm
AUS
-
SJU
9h 30m
2 stops
Southwest Logo
5:30 am - 8:00 pm
SJU
-
AUS
15h 30m
2 stops
$373Southwest
Thu, Aug 20 - Mon, Aug 24
Frontier Logo
11:00 am - 11:06 am
AUS
-
SJU
23h 06m
1 stop
Frontier Logo
6:35 am - 4:39 pm
SJU
-
AUS
35h 04m
2 stops
$374Frontier
Mon, Aug 17 - Mon, Aug 24
Frontier Logo
5:34 pm - 12:41 am
AUS
-
SJU
30h 07m
2 stops
Frontier Logo
8:37 pm - 9:32 am
SJU
-
AUS
13h 55m
1 stop
$375Frontier
Thu, Aug 6 - Tue, Aug 11
United Airlines Logo
12:15 pm - 8:38 pm
AUS
-
SJU
7h 23m
1 stop
United Airlines Logo
1:00 am - 9:26 am
SJU
-
AUS
9h 26m
1 stop
$376United Airlines
Sat, Aug 8 - Sun, Aug 16

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American Airlines flights from Austin to San Juan

Our best American Airlines deals on Austin to San Juan flight tickets
American Airlines
Sep 5
AUS6:21 amAustin Bergstrom
16h 54m
1 stop
SJU12:15 amSan Juan Luis Munoz Marin Intl
Sep 9
SJU6:27 amSan Juan Luis Munoz Marin Intl
13h 43m
2 stops
AUS7:10 pmAustin Bergstrom
$371
American Airlines
Sep 8
AUS5:00 amAustin Bergstrom
12h 33m
2 stops
SJU6:33 pmSan Juan Luis Munoz Marin Intl
Sep 11
SJU6:27 amSan Juan Luis Munoz Marin Intl
10h 15m
2 stops
AUS3:42 pmAustin Bergstrom
$381
American Airlines
Aug 14
AUS6:21 amAustin Bergstrom
16h 38m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Aug 17
SJU7:30 amSan Juan Luis Munoz Marin Intl
15h 56m
1 stop
AUS10:26 pmAustin Bergstrom
$401

Frontier flights from Austin to San Juan

Our best Frontier deals on Austin to San Juan flight tickets
Frontier
Sep 19
AUS10:50 amAustin Bergstrom
12h 07m
2 stops
SJU11:57 pmSan Juan Luis Munoz Marin Intl
Sep 21
SJU4:30 pmSan Juan Luis Munoz Marin Intl
18h 18m
1 stop
AUS9:48 amAustin Bergstrom
$368
Frontier
Aug 1
AUS1:33 pmAustin Bergstrom
23h 43m
1 stop
SJU2:16 pmSan Juan Luis Munoz Marin Intl
Aug 6
SJU6:26 amSan Juan Luis Munoz Marin Intl
31h 12m
2 stops
AUS12:38 pmAustin Bergstrom
$369
Frontier
Sep 19
AUS10:50 amAustin Bergstrom
12h 07m
2 stops
SJU11:57 pmSan Juan Luis Munoz Marin Intl
Sep 20
SJU6:42 pmSan Juan Luis Munoz Marin Intl
16h 30m
1 stop
AUS10:12 amAustin Bergstrom
$370

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 July 2, 2026.
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

Cheapest round-trip

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Wed 8/19

6:35 am-4:25 pm

2 stops8h 50m

San Juan Luis Munoz Marin Intl

Tue 8/25

6:00 am-4:20 pm

2 stops11h 20m

$366

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sat 9/19

10:50 am-11:57 pm

2 stops12h 07m

San Juan Luis Munoz Marin Intl

Mon 9/21

4:30 pm-9:48 am

1 stop18h 18m

$368

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sat 8/1

1:33 pm-2:16 pm

1 stop23h 43m

San Juan Luis Munoz Marin Intl

Thu 8/6

6:26 am-12:38 pm

2 stops31h 12m

$369

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sat 9/19

10:50 am-11:57 pm

2 stops12h 07m

San Juan Luis Munoz Marin Intl

Sun 9/20

6:42 pm-10:12 am

1 stop16h 30m

$370

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sat 9/5

6:21 am-12:15 am

1 stop16h 54m

San Juan Luis Munoz Marin Intl

Wed 9/9

6:27 am-7:10 pm

2 stops13h 43m

$371
Quickest round-trip

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sun 8/9

7:44 pm-5:29 am

1 stop8h 45m

San Juan Luis Munoz Marin Intl

Mon 8/10

2:05 am-8:37 am

1 stop7h 32m

$372

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Thu 8/20

11:40 am-10:10 pm

2 stops9h 30m

San Juan Luis Munoz Marin Intl

Mon 8/24

5:30 am-8:00 pm

2 stops15h 30m

$373

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Mon 8/17

11:00 am-11:06 am

1 stop23h 06m

San Juan Luis Munoz Marin Intl

Mon 8/24

6:35 am-4:39 pm

2 stops35h 04m

$374

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Thu 8/6

5:34 pm-12:41 am

2 stops30h 07m

San Juan Luis Munoz Marin Intl

Tue 8/11

8:37 pm-9:32 am

1 stop13h 55m

$375

AustinSan Juan

AUS - SJU

AUSSJU

Austin Bergstrom

Sat 8/8

12:15 pm-8:38 pm

1 stop7h 23m

San Juan Luis Munoz Marin Intl

Sun 8/16

1:00 am-9:26 am

1 stop9h 26m

$376

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 typical price of a round-trip flight between Austin and San Juan?

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in February, then December is your next best option. Flight prices from Austin to San Juan during December average around $87.

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 from Austin 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 $432 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 $341 on momondo.

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

There is only 1 cabin class available to choose from on Austin 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

2 airports
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 are 2 airports in San Juan. From Austin there are direct flights to San Juan Luis Munoz Marin Intl (SJU).
Search flight deals

Frequently asked questions about flying from Austin to San Juan

  • 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 4h 25m 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 $138Free CancellationRating
5.6
2,848 reviews
Search Frontier flights
DeltaPriceFrom $200Free CancellationRating
7.8
8,453 reviews
Search Delta flights
American AirlinesPriceFrom $225Free CancellationRating
7.1
11,766 reviews
Search American Airlines flights
United AirlinesPriceFrom $245Free CancellationRating
7.4
9,927 reviews
Search United Airlines flights
SouthwestPriceFrom $256Free CancellationRating
7.9
4,250 reviews
Search Southwest flights
JetBluePriceFrom $313Free CancellationRating
7.1
3,009 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