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Cheap flights from San Antonio to Puerto Rico from $87

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 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.
1 adult
0 bags

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Find the cheapest flights from San Antonio to Puerto Rico

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
1:57 pm - 12:43 am
SAT
-
SJU
8h 46m1 stop
Frontier Logo
3:53 am - 1:12 pm
SJU
-
SAT
11h 19m1 stop
$199Frontier
Mon, Feb 23 - Wed, Mar 4
Multiple Airlines Logo
10:42 am - 5:23 pm
SAT
-
SJU
4h 41mnonstop
Multiple Airlines Logo
9:23 pm - 6:18 pm
SJU
-
SAT
22h 55m1 stop
$201Multiple Airlines
Fri, Jan 2 - Sat, Jan 10
Frontier Logo
1:57 pm - 11:53 pm
SAT
-
SJU
7h 56m1 stop
Frontier Logo
5:25 pm - 1:12 pm
SJU
-
SAT
21h 47m1 stop
$215Frontier
Thu, Feb 12 - Fri, Feb 20
Frontier Logo
7:11 pm - 8:54 am
SAT
-
SJU
11h 43m1 stop
Frontier Logo
9:23 pm - 6:18 pm
SJU
-
SAT
22h 55m1 stop
$217Frontier
Fri, Jan 2 - Sat, Jan 10
Frontier Logo
1:57 pm - 12:43 am
SAT
-
SJU
8h 46m1 stop
Frontier Logo
3:53 am - 1:12 pm
SJU
-
SAT
11h 19m1 stop
$220Frontier
Sat, Feb 21 - Wed, Mar 4
Multiple Airlines Logo
6:00 am - 11:09 pm
SAT
-
SJU
15h 09m1 stop
Multiple Airlines Logo
3:08 am - 1:23 pm
SJU
-
SAT
11h 15m1 stop
$228Multiple Airlines
Mon, Feb 23 - Sun, Mar 8
United Airlines Logo
7:00 am - 11:57 pm
SAT
-
BQN
14h 57m2 stops
United Airlines Logo
1:09 am - 1:08 pm
BQN
-
SAT
13h 59m2 stops
$370United Airlines
Sun, Jan 25 - Wed, Jan 28
United Airlines Logo
9:00 am - 11:57 pm
SAT
-
BQN
12h 57m2 stops
United Airlines Logo
1:09 am - 1:08 pm
BQN
-
SAT
13h 59m2 stops
$408United Airlines
Wed, Jan 7 - Wed, Jan 21
United Airlines Logo
7:00 am - 11:57 pm
SAT
-
BQN
14h 57m2 stops
United Airlines Logo
1:09 am - 1:08 pm
BQN
-
SAT
13h 59m2 stops
$420United Airlines
Sun, Feb 1 - Wed, Feb 4
United Airlines Logo
7:40 am - 11:57 pm
SAT
-
BQN
14h 17m3 stops
United Airlines Logo
1:09 am - 12:24 pm
BQN
-
SAT
13h 15m2 stops
$552United Airlines
Wed, Jan 7 - Wed, Jan 21

Spirit Airlines flights from San Antonio to Puerto Rico

Our best Spirit Airlines deals on San Antonio to Puerto Rico flight tickets
Spirit Airlines
Dec 31
SAT10:42 amSan Antonio
4h 41m
SJU5:23 pmSan Juan Luis Munoz Marin Intl
Jan 7
SJU6:30 amSan Juan Luis Munoz Marin Intl
5h 07m
SAT9:37 amSan Antonio
$246
Find similar
Spirit Airlines
Jan 5
SAT10:42 amSan Antonio
4h 41m
SJU5:23 pmSan Juan Luis Munoz Marin Intl
Apr 17
SJU3:43 pmSan Juan Luis Munoz Marin Intl
7h 46m
1 stop
SAT10:29 pmSan Antonio
$279
Find similar
Spirit Airlines
Jan 2
SAT10:42 amSan Antonio
4h 41m
SJU5:23 pmSan Juan Luis Munoz Marin Intl
Jan 12
SJU8:05 pmSan Juan Luis Munoz Marin Intl
29h 47m
1 stop
SAT11:52 pmSan Antonio
$285
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
Feb 23
SAT7:00 amSan Antonio
13h 22m
2 stops
SJU10:22 pmSan Juan Luis Munoz Marin Intl
Mar 9
SJU6:45 amSan Juan Luis Munoz Marin Intl
7h 29m
1 stop
SAT1:14 pmSan Antonio
$264
Find similar
United Airlines
Jan 25
SAT7:00 amSan Antonio
14h 57m
2 stops
BQN11:57 pmAguadilla Borinquen
Jan 28
BQN1:09 amAguadilla Borinquen
13h 59m
2 stops
SAT1:08 pmSan Antonio
$370
Find similar
United Airlines
Jan 7
SAT9:00 amSan Antonio
12h 57m
2 stops
BQN11:57 pmAguadilla Borinquen
Jan 21
BQN1:09 amAguadilla Borinquen
13h 59m
2 stops
SAT1:08 pmSan Antonio
$408
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 December 18, 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

Mon 2/23

1:57 pm-12:43 am

1 stop8h 46m

San Juan Luis Munoz Marin Intl

Wed 3/4

3:53 am-1:12 pm

1 stop11h 19m

$199

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Fri 1/2

10:42 am-5:23 pm

Nonstop4h 41m

San Juan Luis Munoz Marin Intl

Sat 1/10

9:23 pm-6:18 pm

1 stop22h 55m

$201

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Thu 2/12

1:57 pm-11:53 pm

1 stop7h 56m

San Juan Luis Munoz Marin Intl

Fri 2/20

5:25 pm-1:12 pm

1 stop21h 47m

$215

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Fri 1/2

7:11 pm-8:54 am

1 stop11h 43m

San Juan Luis Munoz Marin Intl

Sat 1/10

9:23 pm-6:18 pm

1 stop22h 55m

$217

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Sat 2/21

1:57 pm-12:43 am

1 stop8h 46m

San Juan Luis Munoz Marin Intl

Wed 3/4

3:53 am-1:12 pm

1 stop11h 19m

$220

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Mon 2/23

6:00 am-11:09 pm

1 stop15h 09m

San Juan Luis Munoz Marin Intl

Sun 3/8

3:08 am-1:23 pm

1 stop11h 15m

$228

San AntonioAguadilla

SAT - BQN

SATBQN

San Antonio

Sun 1/25

7:00 am-11:57 pm

2 stops14h 57m

Aguadilla Borinquen

Wed 1/28

1:09 am-1:08 pm

2 stops13h 59m

$370

San AntonioAguadilla

SAT - BQN

SATBQN

San Antonio

Wed 1/7

9:00 am-11:57 pm

2 stops12h 57m

Aguadilla Borinquen

Wed 1/21

1:09 am-1:08 pm

2 stops13h 59m

$408

San AntonioAguadilla

SAT - BQN

SATBQN

San Antonio

Sun 2/1

7:00 am-11:57 pm

2 stops14h 57m

Aguadilla Borinquen

Wed 2/4

1:09 am-1:08 pm

2 stops13h 59m

$420

San AntonioAguadilla

SAT - BQN

SATBQN

San Antonio

Wed 1/7

7:40 am-11:57 pm

3 stops14h 17m

Aguadilla Borinquen

Wed 1/21

1:09 am-12:24 pm

2 stops13h 15m

$552

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 October, then you should wait until September to fly from San Antonio, when ticket prices are also cheap, with an average price of $311.

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 $382.

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 $212. 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 $391 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 $306 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?

You could potentially save up to 1% on your flight if you consider stops on a San Antonio to Puerto Rico flight.

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

$97

Fastest flight time

4h 41m

Direct flights

Tue, Thu and Sat

Airports in Puerto Rico

20 airports
The best one-way flight to Puerto Rico from San Antonio in the past 72 hours is $97. The best round-trip flight deal from San Antonio to Puerto Rico found on momondo in the last 72 hours is $313.
The fastest flight from San Antonio to Puerto Rico takes 4h 41m
Direct flights go from San Antonio to Puerto Rico on Tuesday, Thursday and Saturday. The only airline offering direct flights is Spirit Airlines.
There are 20 airports in Puerto Rico. From San Antonio there are direct flights to 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 $133Free CancellationRating
5.8
3,081 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $164Free CancellationRating
6.3
8,190 reviews
Search Spirit Airlines flights
DeltaPriceFrom $224Free CancellationRating
7.9
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $245Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
SouthwestPriceFrom $265Free CancellationRating
7.9
4,250 reviews
Search Southwest flights
American AirlinesPriceFrom $306Free CancellationRating
7.2
11,055 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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Find better results for your trip to Puerto Rico

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Popular flights according to clicks in the last 7 days on momondo
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