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Cheap flights from San Antonio to Caribbean Islands from $94

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 Caribbean Islands departing on 3/21. 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 Caribbean Islands

Cheap round-trip flights

Enter your travel dates to find the best prices.
Spirit Airlines Logo
6:00 am - 2:31 pm
SAT
-
STT
6h 31m
1 stop
Spirit Airlines Logo
3:36 pm - 11:59 pm
STT
-
SAT
10h 23m
1 stop
$165Spirit Airlines
Wed, Feb 25 - Sat, Feb 28
Spirit Airlines Logo
10:22 am - 3:28 pm
SAT
-
STT
28h 06m
1 stop
Spirit Airlines Logo
4:35 pm - 9:27 am
STT
-
SAT
17h 52m
1 stop
$214Spirit Airlines
Tue, Apr 7 - Mon, Apr 13
Spirit Airlines Logo
10:26 am - 4:34 pm
SAT
-
STT
28h 08m
1 stop
Spirit Airlines Logo
5:40 pm - 9:30 am
STT
-
SAT
17h 50m
1 stop
$228Spirit Airlines
Sat, Feb 28 - Tue, Mar 3
Southwest Logo
10:05 am - 11:25 pm
SAT
-
SJU
12h 20m
1 stop
Southwest Logo
8:10 am - 9:05 pm
SJU
-
SAT
13h 55m
1 stop
$289Southwest
Fri, May 1 - Wed, May 6
Delta Logo
5:20 am - 12:00 pm
SAT
-
GCM
6h 40m
1 stop
Delta Logo
1:19 pm - 8:46 pm
GCM
-
SAT
7h 27m
1 stop
$317Delta
Wed, May 6 - Wed, May 13
Delta Logo
5:30 am - 12:45 pm
SAT
-
PLS
6h 15m
1 stop
Delta Logo
2:15 pm - 12:38 am
PLS
-
SAT
11h 23m
1 stop
$325Delta
Tue, Mar 3 - Tue, Mar 10
United Airlines Logo
7:05 am - 4:00 pm
SAT
-
PLS
7h 55m
1 stop
United Airlines Logo
5:06 pm - 8:38 am
PLS
-
SAT
16h 32m
2 stops
$351United Airlines
Tue, Mar 3 - Tue, Mar 10
United Airlines Logo
5:00 am - 4:00 pm
SAT
-
PLS
10h 00m
2 stops
United Airlines Logo
12:35 pm - 8:42 am
PLS
-
SAT
21h 07m
2 stops
$376United Airlines
Wed, Mar 25 - Tue, Mar 31
American Airlines Logo
6:00 am - 2:25 pm
SAT
-
GCM
8h 25m
1 stop
American Airlines Logo
3:30 pm - 11:59 pm
GCM
-
SAT
8h 29m
1 stop
$392American Airlines
Thu, Mar 19 - Thu, Mar 26
American Airlines Logo
5:00 am - 2:25 pm
SAT
-
PLS
8h 25m
1 stop
American Airlines Logo
3:25 pm - 11:59 pm
PLS
-
SAT
9h 34m
1 stop
$396American Airlines
Thu, Mar 19 - Thu, Mar 26

Spirit Airlines flights from San Antonio to Caribbean Islands

Our best Spirit Airlines deals on San Antonio to Caribbean Islands flight tickets
Spirit Airlines
Feb 25
SAT6:00 amSan Antonio
6h 31m
1 stop
STT2:31 pmSaint Thomas Island Cyril E King
Feb 28
STT3:36 pmSaint Thomas Island Cyril E King
10h 23m
1 stop
SAT11:59 pmSan Antonio
$165
Spirit Airlines
Apr 7
SAT10:22 amSan Antonio
28h 06m
1 stop
STT3:28 pmSaint Thomas Island Cyril E King
Apr 13
STT4:35 pmSaint Thomas Island Cyril E King
17h 52m
1 stop
SAT9:27 amSan Antonio
$214
Spirit Airlines
Feb 28
SAT10:26 amSan Antonio
28h 08m
1 stop
STT4:34 pmSaint Thomas Island Cyril E King
Mar 3
STT5:40 pmSaint Thomas Island Cyril E King
17h 50m
1 stop
SAT9:30 amSan Antonio
$228

Frontier flights from San Antonio to Caribbean Islands

Our best Frontier deals on San Antonio to Caribbean Islands flight tickets
Frontier
Feb 21
SAT1:57 pmSan Antonio
10h 56m
1 stop
SJU2:53 amSan Juan Luis Munoz Marin Intl
Feb 22
SJU3:53 amSan Juan Luis Munoz Marin Intl
11h 19m
1 stop
SAT1:12 pmSan Antonio
$285
Frontier
Feb 16
SAT3:33 pmSan Antonio
16h 21m
1 stop
SJU9:54 amSan Juan Luis Munoz Marin Intl
Feb 19
SJU4:25 pmSan Juan Luis Munoz Marin Intl
22h 47m
1 stop
SAT1:12 pmSan Antonio
$288
Frontier
Feb 20
SAT1:57 pmSan Antonio
8h 46m
1 stop
SJU12:43 amSan Juan Luis Munoz Marin Intl
Feb 27
SJU3:53 amSan Juan Luis Munoz Marin Intl
11h 25m
1 stop
SAT1:18 pmSan Antonio
$293

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to Caribbean Islands 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 February 3, 2026.
Use the filters below to find and compare flights from San Antonio to Caribbean Islands that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioSaint Thomas Island

SAT - STT

SATSTT

San Antonio

Wed 2/25

6:00 am-2:31 pm

1 stop6h 31m

Saint Thomas Island Cyril E King

Sat 2/28

3:36 pm-11:59 pm

1 stop10h 23m

$165

San AntonioSaint Thomas Island

SAT - STT

SATSTT

San Antonio

Tue 4/7

10:22 am-3:28 pm

1 stop28h 06m

Saint Thomas Island Cyril E King

Mon 4/13

4:35 pm-9:27 am

1 stop17h 52m

$214

San AntonioSaint Thomas Island

SAT - STT

SATSTT

San Antonio

Sat 2/28

10:26 am-4:34 pm

1 stop28h 08m

Saint Thomas Island Cyril E King

Tue 3/3

5:40 pm-9:30 am

1 stop17h 50m

$228

San AntonioSan Juan

SAT - SJU

SATSJU

San Antonio

Fri 5/1

10:05 am-11:25 pm

1 stop12h 20m

San Juan Luis Munoz Marin Intl

Wed 5/6

8:10 am-9:05 pm

1 stop13h 55m

$289

San AntonioGeorge Town

SAT - GCM

SATGCM

San Antonio

Wed 5/6

5:20 am-12:00 pm

1 stop6h 40m

George Town Owen Roberts Intl

Wed 5/13

1:19 pm-8:46 pm

1 stop7h 27m

$317

San AntonioProvidenciales

SAT - PLS

SATPLS

San Antonio

Tue 3/3

5:30 am-12:45 pm

1 stop6h 15m

Providenciales

Tue 3/10

2:15 pm-12:38 am

1 stop11h 23m

$325

San AntonioProvidenciales

SAT - PLS

SATPLS

San Antonio

Tue 3/3

7:05 am-4:00 pm

1 stop7h 55m

Providenciales

Tue 3/10

5:06 pm-8:38 am

2 stops16h 32m

$351

San AntonioProvidenciales

SAT - PLS

SATPLS

San Antonio

Wed 3/25

5:00 am-4:00 pm

2 stops10h 00m

Providenciales

Tue 3/31

12:35 pm-8:42 am

2 stops21h 07m

$376

San AntonioGeorge Town

SAT - GCM

SATGCM

San Antonio

Thu 3/19

6:00 am-2:25 pm

1 stop8h 25m

George Town Owen Roberts Intl

Thu 3/26

3:30 pm-11:59 pm

1 stop8h 29m

$392

San AntonioProvidenciales

SAT - PLS

SATPLS

San Antonio

Thu 3/19

5:00 am-2:25 pm

1 stop8h 25m

Providenciales

Thu 3/26

3:25 pm-11:59 pm

1 stop9h 34m

$396

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 Caribbean Islands from

How to get the cheapest flight ticket from San Antonio to Caribbean Islands

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 Caribbean Islands?

The month of October is, on average, the cheapest month to fly to Caribbean Islands from San Antonio, with most prices found around $305. The month of September is another great option to travel to Caribbean Islands, with average flight prices from San Antonio averaging around $314.

What is the cheapest day to depart on your flight to Caribbean Islands?

The cheapest day to depart from San Antonio to Caribbean Islands is on a Tuesday. Travelers who choose to depart for Caribbean Islands on a Tuesday will often find tickets for as low as $236. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $382. These prices are subject to change though, so be sure to set up a Price Alert for flights to Caribbean Islands.

What is the cheapest time of day to depart on your flight to Caribbean Islands?

According to our data, the cheapest time of day to fly to Caribbean Islands is at noon. momondo users have found flights departing from San Antonio to Caribbean Islands at noon for as low as $212. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the morning because they tend to be around $372. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest San Antonio to Caribbean Islands flight route?

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

How far in advance should I book a flight to Caribbean Islands?

You are more likely to see cheaper flights to Caribbean Islands from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Caribbean Islands for around $385 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Caribbean Islands from San Antonio for as low as $308 on momondo.

What cabin class options are available on San Antonio to Caribbean Islands flights?

There are 2 cabin classes available to choose from on San Antonio to Caribbean Islands 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 Caribbean Islands flights?

No. A direct flight is the cheapest option for a flight between San Antonio to Caribbean Islands.

Cheap San Antonio to Caribbean Islands flight deals and tips

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

Fastest flight time

5h 50m

Direct flights

None
The fastest flight from San Antonio to Caribbean Islands takes 5h 50m
There are no direct flights from San Antonio to Caribbean Islands. There are no popular flight routes from San Antonio to Caribbean Islands.
Search flight deals

  • When did momondo last update prices for flights from San Antonio Airport to Caribbean Islands?

    Prices for flights from San Antonio Airport to Caribbean Islands are updated daily.

  • How many operators does momondo search for flights from San Antonio Airport to Caribbean Islands?

  • How old do you have to be to fly from San Antonio Airport to Caribbean Islands?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Caribbean Islands.

  • What documentation or ID do you need to fly to Caribbean Islands?

    The travel and health documents required for your trip to Caribbean Islands can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Caribbean Islands. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from San Antonio to Caribbean Islands?

Best airlines flying from San Antonio to Caribbean Islands

Compare and see reviews for airlines that fly from San Antonio to Caribbean Islands with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $130Free CancellationRating
5.7
3,051 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $132Free CancellationRating
6.3
8,404 reviews
Search Spirit Airlines flights
DeltaPriceFrom $163Free CancellationRating
7.9
8,138 reviews
Search Delta flights
United AirlinesPriceFrom $225Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
American AirlinesPriceFrom $260Free CancellationRating
7.2
11,216 reviews
Search American Airlines flights
SouthwestPriceFrom $265Free CancellationRating
8.0
4,272 reviews
Search Southwest flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Caribbean Islands from San Antonio.

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

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

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

Once all potential San Antonio to Caribbean Islands 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 Caribbean Islands right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Caribbean Islands from San Antonio. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Caribbean Islands trip

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