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Cheap flights from San Antonio to Puerto Rico from $91

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Puerto Rico departing on 9/26. 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 San Antonio to Puerto Rico

Cheap round-trip flights

Spirit Airlines Logo
6:20 am - 1:00 pmSAT-SJU
4h 40mnonstop
Spirit Airlines Logo
1:55 pm - 4:43 pmSJU-SAT
4h 48mnonstop
$173Spirit Airlines
Find Deal
Fri, Nov 7 - Mon, Nov 10
Spirit Airlines Logo
1:01 pm - 6:48 pmSAT-SJU
4h 47mnonstop
Spirit Airlines Logo
8:00 am - 12:06 pmSJU-SAT
5h 06mnonstop
$174Spirit Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20
Spirit Airlines Logo
1:01 pm - 6:48 pmSAT-SJU
4h 47mnonstop
Spirit Airlines Logo
8:00 am - 12:06 pmSJU-SAT
5h 06mnonstop
$176Spirit Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
Spirit Airlines Logo
6:20 am - 1:00 pmSAT-SJU
4h 40mnonstop
Spirit Airlines Logo
1:55 pm - 4:43 pmSJU-SAT
4h 48mnonstop
$178Spirit Airlines
Find Deal
Sat, Feb 21 - Sat, Feb 28
Spirit Airlines Logo
1:01 pm - 6:48 pmSAT-SJU
4h 47mnonstop
Spirit Airlines Logo
8:00 am - 12:06 pmSJU-SAT
5h 06mnonstop
$179Spirit Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20
Logo
4:09 pm - 9:35 pmSAT-SJU
4h 26mnonstop
Logo
7:15 am - 4:30 pmSJU-SAT
10h 15m1 stop
$180
Find Deal
Fri, Sep 12 - Fri, Sep 19
United Airlines Logo
7:10 am - 3:42 pmSAT-SJU
7h 32m1 stop
United Airlines Logo
7:00 am - 3:25 pmSJU-SAT
9h 25m1 stop
$225United Airlines
Find Deal
Mon, Sep 22 - Sat, Sep 27
Logo
6:20 am - 1:00 pmSAT-SJU
4h 40mnonstop
Logo
3:55 am - 5:57 pmSJU-SAT
16h 02m1 stop
$234
Find Deal
Mon, Nov 17 - Wed, Nov 19
Delta Logo
2:46 pm - 11:13 pmSAT-SJU
6h 27m1 stop
Delta Logo
1:57 pm - 12:33 amSJU-SAT
12h 36m1 stop
$235Delta
Find Deal
Mon, Nov 10 - Fri, Nov 21
United Airlines Logo
9:50 am - 11:09 pmSAT-BQN
12h 19m2 stops
United Airlines Logo
12:15 am - 4:06 pmBQN-SAT
16h 51m2 stops
$252United Airlines
Find Deal
Sat, Sep 20 - Fri, Sep 26

Spirit Airlines flights from San Antonio to Puerto Rico

Our best Spirit Airlines deals on San Antonio to Puerto Rico flight tickets
Spirit Airlines
Nov 7
SAT6:20 amSan Antonio
4h 40m
SJU1:00 pmSan Juan Luis Munoz Marin Intl
Nov 10
SJU1:55 pmSan Juan Luis Munoz Marin Intl
4h 48m
SAT4:43 pmSan Antonio
$173
Find similar
Spirit Airlines
Oct 13
SAT1:01 pmSan Antonio
4h 47m
SJU6:48 pmSan Juan Luis Munoz Marin Intl
Oct 20
SJU8:00 amSan Juan Luis Munoz Marin Intl
5h 06m
SAT12:06 pmSan Antonio
$174
Find similar
Spirit Airlines
Oct 24
SAT1:01 pmSan Antonio
4h 47m
SJU6:48 pmSan Juan Luis Munoz Marin Intl
Oct 27
SJU8:00 amSan Juan Luis Munoz Marin Intl
5h 06m
SAT12:06 pmSan Antonio
$176
Find similar

United Airlines flights from San Antonio to Puerto Rico

Our best United Airlines deals on San Antonio to Puerto Rico flight tickets
United Airlines
Sep 22
SAT7:10 amSan Antonio
7h 32m
1 stop
SJU3:42 pmSan Juan Luis Munoz Marin Intl
Sep 27
SJU7:00 amSan Juan Luis Munoz Marin Intl
9h 25m
1 stop
SAT3:25 pmSan Antonio
$225
Find similar
United Airlines
Sep 20
SAT9:50 amSan Antonio
12h 19m
2 stops
BQN11:09 pmAguadilla Borinquen
Sep 26
BQN12:15 amAguadilla Borinquen
16h 51m
2 stops
SAT4:06 pmSan Antonio
$252
Find similar
United Airlines
Nov 17
SAT7:05 amSan Antonio
13h 17m
2 stops
SJU10:22 pmSan Juan Luis Munoz Marin Intl
Nov 20
SJU7:45 amSan Juan Luis Munoz Marin Intl
7h 19m
1 stop
SAT1:04 pmSan Antonio
$258
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to Puerto Rico 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 August 28, 2025.
Use the filters below to find and compare flights from San Antonio to Puerto Rico that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Fri 11/7

6:20 am-1:00 pm

Nonstop4h 40m

San Juan Luis Munoz Marin Intl

Mon 11/10

1:55 pm-4:43 pm

Nonstop4h 48m

$173

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Mon 10/13

1:01 pm-6:48 pm

Nonstop4h 47m

San Juan Luis Munoz Marin Intl

Mon 10/20

8:00 am-12:06 pm

Nonstop5h 06m

$174

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Fri 10/24

1:01 pm-6:48 pm

Nonstop4h 47m

San Juan Luis Munoz Marin Intl

Mon 10/27

8:00 am-12:06 pm

Nonstop5h 06m

$176

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Sat 2/21

6:20 am-1:00 pm

Nonstop4h 40m

San Juan Luis Munoz Marin Intl

Sat 2/28

1:55 pm-4:43 pm

Nonstop4h 48m

$178

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Mon 10/13

1:01 pm-6:48 pm

Nonstop4h 47m

San Juan Luis Munoz Marin Intl

Mon 10/20

8:00 am-12:06 pm

Nonstop5h 06m

$179

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Fri 9/12

4:09 pm-9:35 pm

Nonstop4h 26m

San Juan Luis Munoz Marin Intl

Fri 9/19

7:15 am-4:30 pm

1 stop10h 15m

$180

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Mon 9/22

7:10 am-3:42 pm

1 stop7h 32m

San Juan Luis Munoz Marin Intl

Sat 9/27

7:00 am-3:25 pm

1 stop9h 25m

$225

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Mon 11/17

6:20 am-1:00 pm

Nonstop4h 40m

San Juan Luis Munoz Marin Intl

Wed 11/19

3:55 am-5:57 pm

1 stop16h 02m

$234

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Mon 11/10

2:46 pm-11:13 pm

1 stop6h 27m

San Juan Luis Munoz Marin Intl

Fri 11/21

1:57 pm-12:33 am

1 stop12h 36m

$235

San AntonioAguadilla

SAT - BQN

SATBQN

San Antonio

Sat 9/20

9:50 am-11:09 pm

2 stops12h 19m

Aguadilla Borinquen

Fri 9/26

12:15 am-4:06 pm

2 stops16h 51m

$252

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 Puerto Rico from

How to get the cheapest flight ticket from San Antonio to Puerto Rico

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 Puerto Rico?

If you don’t want to visit Puerto Rico in September, then you should wait until April to fly from San Antonio, when ticket prices are also cheap, with an average price of $344.

What is the cheapest day to depart on your flight to Puerto Rico?

On average, the least expensive day to fly to Puerto Rico from San Antonio is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $236. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Puerto Rico is Saturday, with ticket prices averaging around $304.

What is the cheapest time of day to depart on your flight to Puerto Rico?

Our most recent data shows that the best time of day to fly to Puerto Rico is at noon. Flights from San Antonio to Puerto Rico during this time can be as low as $248. In contrast, the most expensive time of day to depart to Puerto Rico is in the evening when prices are around $438.

What is the cheapest San Antonio to Puerto Rico flight route?

Fly from San Antonio to San Juan Luis Munoz Marin Intl for the best San Antonio - Puerto Rico flight prices

How far in advance should I book a flight to Puerto Rico?

You are more likely to see cheaper flights to Puerto Rico from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Puerto Rico for around $413 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Puerto Rico from San Antonio for as low as $339 on momondo.

What cabin class options are available on San Antonio to Puerto Rico flights?

There are 2 cabin classes available to choose from on San Antonio to Puerto Rico flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Antonio to Puerto Rico flights?

No. A direct flight is the cheapest option for a flight between San Antonio to Puerto Rico.

Cheap San Antonio to Puerto Rico flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Puerto Rico

Best Price Found

$100

Fastest flight time

4h 26m

Direct flights

Tue, Thu, Sat and Sun

Airports in Puerto Rico

1 airport
The best one-way flight to Puerto Rico from San Antonio in the past 72 hours is $100. The best round-trip flight deal from San Antonio to Puerto Rico found on momondo in the last 72 hours is $198.
The fastest flight from San Antonio to Puerto Rico takes 4h 26m
Direct flights go from San Antonio to Puerto Rico on Tuesday, Thursday, Saturday and Sunday. The only airline offering direct flights is Spirit Airlines.
There is 1 airport near Puerto Rico: San Juan Luis Munoz Marin Intl (SJU)
Search flight deals

  • When did momondo last update prices for flights from San Antonio Airport to Puerto Rico?

    Prices for flights from San Antonio Airport to Puerto Rico refresh daily.

  • How many operators does momondo search for flights from San Antonio Airport to Puerto Rico?

  • How old do you have to be to fly from San Antonio Airport to Puerto Rico?

    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 San Antonio Airport to Puerto Rico.

  • What documentation or ID do you need to fly to Puerto Rico?

    The travel and health documents you'll need for your trip to Puerto Rico may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Puerto Rico. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from San Antonio to Puerto Rico?

Best airlines flying from San Antonio to Puerto Rico

Compare and see reviews for airlines that fly from San Antonio to Puerto Rico with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $130Free CancellationRating
5.8
3,204 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $164Free CancellationRating
6.3
8,028 reviews
Search Spirit Airlines flights
DeltaPriceFrom $247Free CancellationRating
7.9
7,977 reviews
Search Delta flights
United AirlinesPriceFrom $274Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights
SouthwestPriceFrom $275Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
American AirlinesPriceFrom $323Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Puerto Rico?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Antonio to Puerto Rico for you.

Can I find flights from San Antonio to Puerto Rico with flexible booking policies on momondo?

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

How can momondo help me find flights from San Antonio to Puerto Rico?

momondo helps you find the best flight between San Antonio and Puerto Rico by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Puerto Rico from San Antonio are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Puerto Rico trip

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