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Cheap flights from San Antonio to San Juan from $90

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 San Juan departing on 2/4. 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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Cheap round-trip flights

Spirit Airlines Logo
4:09 pm - 9:35 pmSAT-SJU
4h 26mnonstop
Spirit Airlines Logo
10:42 am - 3:14 pmSJU-SAT
5h 32mnonstop
$172Spirit Airlines
Find Deal
Mon, Sep 29 - Fri, Oct 3
Spirit Airlines Logo
6:20 am - 1:00 pmSAT-SJU
4h 40mnonstop
Spirit Airlines Logo
1:55 pm - 4:43 pmSJU-SAT
4h 48mnonstop
$177Spirit Airlines
Find Deal
Fri, Nov 7 - Mon, Nov 10
Spirit Airlines Logo
1:01 pm - 6:48 pmSAT-SJU
4h 47mnonstop
Spirit Airlines Logo
9:00 am - 12:03 pmSJU-SAT
5h 03mnonstop
$178Spirit Airlines
Find Deal
Fri, Oct 31 - Mon, Nov 3
Spirit Airlines Logo
6:20 am - 1:00 pmSAT-SJU
4h 40mnonstop
Spirit Airlines Logo
1:55 pm - 4:43 pmSJU-SAT
4h 48mnonstop
$180Spirit Airlines
Find Deal
Sat, Feb 21 - Sat, Feb 28
Spirit Airlines Logo
4:09 pm - 9:35 pmSAT-SJU
4h 26mnonstop
Spirit Airlines Logo
10:42 am - 3:14 pmSJU-SAT
5h 32mnonstop
$183Spirit Airlines
Find Deal
Fri, Sep 26 - Mon, Sep 29
Spirit Airlines Logo
6:20 am - 1:00 pmSAT-SJU
4h 40mnonstop
Spirit Airlines Logo
1:55 pm - 4:43 pmSJU-SAT
4h 48mnonstop
$184Spirit Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
Spirit Airlines Logo
1:01 pm - 6:48 pmSAT-SJU
4h 47mnonstop
Spirit Airlines Logo
8:00 am - 12:06 pmSJU-SAT
5h 06mnonstop
$190Spirit Airlines
Find Deal
Mon, Oct 13 - Fri, Oct 17
Spirit Airlines Logo
6:20 am - 1:00 pmSAT-SJU
4h 40mnonstop
Spirit Airlines Logo
1:55 pm - 4:43 pmSJU-SAT
4h 48mnonstop
$191Spirit Airlines
Find Deal
Wed, Jan 14 - Sat, Jan 24
Logo
6:05 pm - 2:54 amSAT-SJU
6h 49m1 stop
Logo
1:55 pm - 4:43 pmSJU-SAT
4h 48mnonstop
$219
Find Deal
Sat, Nov 8 - Mon, Nov 10
Southwest Logo
4:20 pm - 11:50 pmSAT-SJU
6h 30m1 stop
Southwest Logo
3:35 pm - 9:25 pmSJU-SAT
6h 50m1 stop
$245Southwest
Find Deal
Tue, Oct 21 - Tue, Oct 28

Spirit Airlines flights from San Antonio to San Juan Luis Munoz Marin Intl Airport

Our best Spirit Airlines deals on San Antonio to San Juan Luis Munoz Marin Intl Airport flight tickets
Spirit Airlines
Sep 29
SAT4:09 pmSan Antonio
4h 26m
SJU9:35 pmSan Juan Luis Munoz Marin Intl
Oct 3
SJU10:42 amSan Juan Luis Munoz Marin Intl
5h 32m
SAT3:14 pmSan Antonio
$172
Find similar
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
$177
Find similar
Spirit Airlines
Oct 31
SAT1:01 pmSan Antonio
4h 47m
SJU6:48 pmSan Juan Luis Munoz Marin Intl
Nov 3
SJU9:00 amSan Juan Luis Munoz Marin Intl
5h 03m
SAT12:03 pmSan Antonio
$178
Find similar

Frontier flights from San Antonio to San Juan Luis Munoz Marin Intl Airport

Our best Frontier deals on San Antonio to San Juan Luis Munoz Marin Intl Airport flight tickets
Frontier
Sep 22
SAT5:40 pmSan Antonio
15h 16m
2 stops
SJU9:56 amSan Juan Luis Munoz Marin Intl
Sep 26
SJU7:15 amSan Juan Luis Munoz Marin Intl
10h 15m
1 stop
SAT4:30 pmSan Antonio
$297
Find similar
Frontier
Sep 22
SAT5:40 pmSan Antonio
15h 16m
2 stops
SJU9:56 amSan Juan Luis Munoz Marin Intl
Sep 27
SJU4:42 pmSan Juan Luis Munoz Marin Intl
17h 28m
2 stops
SAT9:10 amSan Antonio
$317
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to San Juan Luis Munoz Marin Intl Airport 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 September 11, 2025.
Use the filters below to find and compare flights from San Antonio to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Mon 9/29

4:09 pm-9:35 pm

Nonstop4h 26m

San Juan Luis Munoz Marin Intl

Fri 10/3

10:42 am-3:14 pm

Nonstop5h 32m

$172

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

$177

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Fri 10/31

1:01 pm-6:48 pm

Nonstop4h 47m

San Juan Luis Munoz Marin Intl

Mon 11/3

9:00 am-12:03 pm

Nonstop5h 03m

$178

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

$180

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Fri 9/26

4:09 pm-9:35 pm

Nonstop4h 26m

San Juan Luis Munoz Marin Intl

Mon 9/29

10:42 am-3:14 pm

Nonstop5h 32m

$183

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Fri 12/5

6:20 am-1:00 pm

Nonstop4h 40m

San Juan Luis Munoz Marin Intl

Mon 12/8

1:55 pm-4:43 pm

Nonstop4h 48m

$184

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

Fri 10/17

8:00 am-12:06 pm

Nonstop5h 06m

$190

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Wed 1/14

6:20 am-1:00 pm

Nonstop4h 40m

San Juan Luis Munoz Marin Intl

Sat 1/24

1:55 pm-4:43 pm

Nonstop4h 48m

$191

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Sat 11/8

6:05 pm-2:54 am

1 stop6h 49m

San Juan Luis Munoz Marin Intl

Mon 11/10

1:55 pm-4:43 pm

Nonstop4h 48m

$219

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Tue 10/21

4:20 pm-11:50 pm

1 stop6h 30m

San Juan Luis Munoz Marin Intl

Tue 10/28

3:35 pm-9:25 pm

1 stop6h 50m

$245

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from San Antonio to San Juan Luis Munoz Marin Intl Airport

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 Luis Munoz Marin Intl Airport?

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of September, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $344.

What is the cheapest day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

On average, the least expensive day to fly to San Juan Luis Munoz Marin Intl Airport 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. On the other hand, Saturday is the most expensive day to depart from San Antonio because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $304.

What is the cheapest time of day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

The cheapest time of day to fly to San Juan Luis Munoz Marin Intl Airport is at noon when flights can be purchased for as low as $240. Flights in the evening are often more expensive with an average ticket price of $438.

What is the cheapest San Antonio to San Juan Luis Munoz Marin Intl flight route?

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

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

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around $414 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan Luis Munoz Marin Intl Airport from San Antonio for as low as $339 on momondo.

What cabin class options are available on San Antonio to San Juan Luis Munoz Marin Intl flights?

There are 2 cabin classes available to choose from on San Antonio to San Juan Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport flights?

No. A direct flight is the cheapest option for a flight between San Antonio to San Juan Luis Munoz Marin Intl Airport.

How have San Antonio to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

As of September 2025, prices for San Antonio to San Juan Luis Munoz Marin Intl Airport flights are approximately 36% more expensive when compared to flights at the same time last year.

When to book flights from San Antonio to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to San Juan Luis Munoz Marin Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Antonio to San Juan Luis Munoz Marin Intl Airport (SAT to SJU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to San Juan Luis Munoz Marin Intl Airport

Best Price Found

$155

Fastest flight time

4h 26m

Direct flights

Tue, Thu, Sat and Sun
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from San Antonio in the past 72 hours is $155. The best round-trip flight deal from San Antonio to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is $166.
The fastest flight from San Antonio to San Juan Luis Munoz Marin Intl Airport takes 4h 26m
Direct flights go from San Antonio to San Juan Luis Munoz Marin Intl Airport on Tuesday, Thursday, Saturday and Sunday. The only airline offering direct flights is Spirit Airlines.
Search flight deals

  • How far is San Antonio to San Juan Luis Munoz Marin Intl by plane?

    San Juan Luis Munoz Marin Intl is 2177.2 mi away from San Antonio. In terms of flight time, this usually takes a little over 4h 26m.

  • When did momondo last update prices for flights from San Antonio Airport to San Juan Luis Munoz Marin Intl Airport?

    Prices for flights from San Antonio Airport to San Juan Luis Munoz Marin Intl Airport were last updated today.

  • How many operators does momondo search for flights from San Antonio Airport to San Juan Luis Munoz Marin Intl Airport?

  • How old do you have to be to fly from San Antonio Airport to San Juan Luis Munoz Marin Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to San Juan Luis Munoz Marin Intl Airport.

  • What documentation or ID do you need to fly to San Juan Luis Munoz Marin Intl Airport?

    The required travel and health documents for your San Juan Luis Munoz Marin Intl Airport 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 Luis Munoz Marin Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from San Antonio to San Juan Luis Munoz Marin Intl Airport?

  • What is the most popular airline from San Antonio to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from San Antonio to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from San Antonio to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $130Free CancellationRating
5.8
3,177 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $156Free CancellationRating
6.3
8,023 reviews
Search Spirit Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
7,960 reviews
Search Delta flights
United AirlinesPriceFrom $260Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
SouthwestPriceFrom $271Free CancellationRating
8.0
4,248 reviews
Search Southwest flights
American AirlinesPriceFrom $322Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Carolina
Fajardo
Dorado
Luquillo
Caguas
Humacao
Rio Grande
Bayamón

Why use momondo?

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

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 San Juan for you.

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

Yes. momondo enables you to select and highlight flights to San Juan from San Antonio with this policy.

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

Once all potential San Antonio to San Juan flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of San Antonio to San Juan flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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