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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 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 San Antonio to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
1:57 pm - 1:27 pm
SAT
-
SJU
21h 30m1 stop
Frontier Logo
3:53 am - 1:12 pm
SJU
-
SAT
11h 19m1 stop
$220Frontier
sáb., feb. 21 - mié., mar. 4
Multiple Airlines Logo
12:45 pm - 2:12 am
SAT
-
SJU
11h 27m1 stop
Multiple Airlines Logo
3:55 am - 7:03 pm
SJU
-
SAT
17h 08m1 stop
$223Multiple Airlines
mar., ene. 6 - dom., ene. 11
Multiple Airlines Logo
6:30 am - 11:33 pm
SAT
-
SJU
15h 03m1 stop
Multiple Airlines Logo
5:25 pm - 1:12 pm
SJU
-
SAT
21h 47m1 stop
$225Multiple Airlines
mié., feb. 11 - mié., feb. 18
Multiple Airlines Logo
12:45 pm - 2:12 am
SAT
-
SJU
11h 27m1 stop
Multiple Airlines Logo
9:23 pm - 6:18 pm
SJU
-
SAT
22h 55m1 stop
$229Multiple Airlines
mar., ene. 6 - sáb., ene. 10
Multiple Airlines Logo
6:30 am - 11:33 pm
SAT
-
SJU
15h 03m1 stop
Multiple Airlines Logo
6:48 pm - 9:40 am
SJU
-
SAT
16h 52m1 stop
$230Multiple Airlines
sáb., ene. 10 - vie., ene. 16
Frontier Logo
1:57 pm - 2:53 am
SAT
-
SJU
10h 56m1 stop
Frontier Logo
3:53 am - 1:12 pm
SJU
-
SAT
11h 19m1 stop
$231Frontier
lun., feb. 23 - mié., feb. 25
Frontier Logo
7:14 pm - 9:08 am
SAT
-
SJU
11h 54m1 stop
Frontier Logo
7:34 pm - 8:14 am
SJU
-
SAT
14h 40m1 stop
$234Frontier
dom., ene. 11 - sáb., ene. 17
Frontier Logo
1:57 pm - 2:53 am
SAT
-
SJU
10h 56m1 stop
Frontier Logo
3:53 am - 1:12 pm
SJU
-
SAT
11h 19m1 stop
$235Frontier
jue., feb. 19 - jue., feb. 26
Multiple Airlines Logo
6:00 am - 11:09 pm
SAT
-
SJU
15h 09m1 stop
Multiple Airlines Logo
10:04 am - 8:08 pm
SJU
-
SAT
11h 04m1 stop
$242Multiple Airlines
mié., mar. 4 - lun., mar. 9
Delta Logo
10:57 am - 11:58 pm
SAT
-
SJU
11h 01m1 stop
Delta Logo
6:37 pm - 12:35 am
SJU
-
SAT
7h 58m1 stop
$245Delta
mar., feb. 24 - mié., mar. 4

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
Feb 21
SAT1:57 pmSan Antonio
21h 30m
1 stop
SJU1:27 pmSan Juan Luis Munoz Marin Intl
Mar 4
SJU3:53 amSan Juan Luis Munoz Marin Intl
11h 19m
1 stop
SAT1:12 pmSan Antonio
$220
Find similar
Frontier
Feb 23
SAT1:57 pmSan Antonio
10h 56m
1 stop
SJU2:53 amSan Juan Luis Munoz Marin Intl
Feb 25
SJU3:53 amSan Juan Luis Munoz Marin Intl
11h 19m
1 stop
SAT1:12 pmSan Antonio
$231
Find similar
Frontier
Jan 11
SAT7:14 pmSan Antonio
11h 54m
1 stop
SJU9:08 amSan Juan Luis Munoz Marin Intl
Jan 17
SJU7:34 pmSan Juan Luis Munoz Marin Intl
14h 40m
1 stop
SAT8:14 amSan Antonio
$234
Find similar

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

Our best Delta deals on San Antonio to San Juan Luis Munoz Marin Intl Airport flight tickets
Delta
Feb 24
SAT10:57 amSan Antonio
11h 01m
1 stop
SJU11:58 pmSan Juan Luis Munoz Marin Intl
Mar 4
SJU6:37 pmSan Juan Luis Munoz Marin Intl
7h 58m
1 stop
SAT12:35 amSan Antonio
$245
Find similar
Delta
Jan 5
SAT5:20 amSan Antonio
9h 57m
1 stop
SJU5:17 pmSan Juan Luis Munoz Marin Intl
Jan 9
SJU3:55 pmSan Juan Luis Munoz Marin Intl
9h 28m
1 stop
SAT11:23 pmSan Antonio
$430
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 diciembre 26, 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

sáb. 2/21

1:57 pm-1:27 pm

1 stop21h 30m

San Juan Luis Munoz Marin Intl

mié. 3/4

3:53 am-1:12 pm

1 stop11h 19m

$220

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

mar. 1/6

12:45 pm-2:12 am

1 stop11h 27m

San Juan Luis Munoz Marin Intl

dom. 1/11

3:55 am-7:03 pm

1 stop17h 08m

$223

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

mié. 2/11

6:30 am-11:33 pm

1 stop15h 03m

San Juan Luis Munoz Marin Intl

mié. 2/18

5:25 pm-1:12 pm

1 stop21h 47m

$225

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

mar. 1/6

12:45 pm-2:12 am

1 stop11h 27m

San Juan Luis Munoz Marin Intl

sáb. 1/10

9:23 pm-6:18 pm

1 stop22h 55m

$229

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

sáb. 1/10

6:30 am-11:33 pm

1 stop15h 03m

San Juan Luis Munoz Marin Intl

vie. 1/16

6:48 pm-9:40 am

1 stop16h 52m

$230

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

lun. 2/23

1:57 pm-2:53 am

1 stop10h 56m

San Juan Luis Munoz Marin Intl

mié. 2/25

3:53 am-1:12 pm

1 stop11h 19m

$231

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

dom. 1/11

7:14 pm-9:08 am

1 stop11h 54m

San Juan Luis Munoz Marin Intl

sáb. 1/17

7:34 pm-8:14 am

1 stop14h 40m

$234

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

jue. 2/19

1:57 pm-2:53 am

1 stop10h 56m

San Juan Luis Munoz Marin Intl

jue. 2/26

3:53 am-1:12 pm

1 stop11h 19m

$235

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

mié. 3/4

6:00 am-11:09 pm

1 stop15h 09m

San Juan Luis Munoz Marin Intl

lun. 3/9

10:04 am-8:08 pm

1 stop11h 04m

$242

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

mar. 2/24

10:57 am-11:58 pm

1 stop11h 01m

San Juan Luis Munoz Marin Intl

mié. 3/4

6:37 pm-12:35 am

1 stop7h 58m

$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 October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $311.

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 $382.

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 $212. 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 $391 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 $306 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?

You could potentially save up to 6% on your flight if you consider stops on a San Antonio to San Juan Luis Munoz Marin Intl Airport flight.

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

As of December 2025, prices for San Antonio to San Juan Luis Munoz Marin Intl Airport flights are approximately 2% cheaper 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

$98

Fastest flight time

4h 41m

Direct flights

Tue, Thu and Sat
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from San Antonio in the past 72 hours is $98. 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 $313.
The fastest flight from San Antonio to San Juan Luis Munoz Marin Intl Airport takes 4h 41m
Direct flights go from San Antonio to San Juan Luis Munoz Marin Intl Airport on Tuesday, Thursday and Saturday. 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 41m.

  • 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
3,070 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $164Free CancellationRating
6.3
8,207 reviews
Search Spirit Airlines flights
DeltaPriceFrom $190Free CancellationRating
7.9
8,014 reviews
Search Delta flights
United AirlinesPriceFrom $245Free CancellationRating
7.4
9,115 reviews
Search United Airlines flights
SouthwestPriceFrom $265Free CancellationRating
8.0
4,258 reviews
Search Southwest flights
American AirlinesPriceFrom $293Free CancellationRating
7.2
11,064 reviews
Search American Airlines flights

  • Spirit Airlines Flights From San Antonio to San Juan Luis Munoz Marin Intl Airport

    Spirit Airlines is one of the most popular airlines flying from San Antonio to San Juan Luis Munoz Marin Intl Airport, operating 3 flights/week on average for this route. A good Spirit Airlines flight deal for San Antonio to San Juan Luis Munoz Marin Intl Airport starts from $164 round-trip, up to an average price of $291. Our users have rated Spirit Airlines at 6.3/10.

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
Humacao
Caguas
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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