Flights from San Antonio to Isabela

Cheapest flights from San Antonio

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jul 7 - Fri, Jul 11

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$221 Roundtrip, found 17 hours ago

$221

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Mon, Jul 7 from San Antonio Intl. to Luis Munoz Marin Intl., returning Fri, Jul 11, priced at $221 found 17 hours ago

Fri, Jul 4 - Fri, Jul 11

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$230 Roundtrip, found 17 hours ago

$230

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Fri, Jul 4 from San Antonio Intl. to Luis Munoz Marin Intl., returning Fri, Jul 11, priced at $230 found 17 hours ago

Tue, Jul 8 - Fri, Jul 11

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$242 Roundtrip, found 17 hours ago

$242

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Tue, Jul 8 from San Antonio Intl. to Luis Munoz Marin Intl., returning Fri, Jul 11, priced at $242 found 17 hours ago

Mon, Jul 7 - Fri, Jul 11

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$264 Roundtrip, found 17 hours ago

$264

Roundtrip

found 17 hours ago

Select United flight, departing Mon, Jul 7 from San Antonio Intl. to Luis Munoz Marin Intl., returning Fri, Jul 11, priced at $264 found 17 hours ago

Mon, Jul 7 - Fri, Jul 11

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$265 Roundtrip, found 17 hours ago

$265

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Mon, Jul 7 from San Antonio Intl. to Luis Munoz Marin Intl., returning Fri, Jul 11, priced at $265 found 17 hours ago

Mon, Jun 23 - Mon, Jun 30

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$270 Roundtrip, found 6 days ago

$270

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Mon, Jun 23 from San Antonio Intl. to Luis Munoz Marin Intl., returning Mon, Jun 30, priced at $270 found 6 days ago

Mon, Jul 7 - Fri, Jul 11

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$278 Roundtrip, found 17 hours ago

$278

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Mon, Jul 7 from San Antonio Intl. to Luis Munoz Marin Intl., returning Fri, Jul 11, priced at $278 found 17 hours ago

Mon, Jul 7 - Fri, Jul 11

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$279 Roundtrip, found 17 hours ago

$279

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Mon, Jul 7 from San Antonio Intl. to Luis Munoz Marin Intl., returning Fri, Jul 11, priced at $279 found 17 hours ago

Sat, Jul 5 - Fri, Jul 11

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$280 Roundtrip, found 17 hours ago

$280

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Sat, Jul 5 from San Antonio Intl. to Luis Munoz Marin Intl., returning Fri, Jul 11, priced at $280 found 17 hours ago

Mon, Jun 23 - Wed, Jun 25

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$283 Roundtrip, found 6 days ago

$283

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Mon, Jun 23 from San Antonio Intl. to Luis Munoz Marin Intl., returning Wed, Jun 25, priced at $283 found 6 days ago

Fri, Jul 4 - Mon, Jul 14

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$286 Roundtrip, found 17 hours ago

$286

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Fri, Jul 4 from San Antonio Intl. to Luis Munoz Marin Intl., returning Mon, Jul 14, priced at $286 found 17 hours ago

Tue, Jun 24 - Mon, Jun 30

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$290 Roundtrip, found 6 days ago

$290

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Tue, Jun 24 from San Antonio Intl. to Luis Munoz Marin Intl., returning Mon, Jun 30, priced at $290 found 6 days ago

Fri, Jul 4 - Wed, Jul 9

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$293 Roundtrip, found 17 hours ago

$293

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Fri, Jul 4 from San Antonio Intl. to Luis Munoz Marin Intl., returning Wed, Jul 9, priced at $293 found 17 hours ago

Tue, Jul 8 - Mon, Jul 14

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$298 Roundtrip, found 17 hours ago

$298

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Tue, Jul 8 from San Antonio Intl. to Luis Munoz Marin Intl., returning Mon, Jul 14, priced at $298 found 17 hours ago

Sun, Jun 22 - Mon, Jun 30

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$300 Roundtrip, found 6 days ago

$300

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Sun, Jun 22 from San Antonio Intl. to Luis Munoz Marin Intl., returning Mon, Jun 30, priced at $300 found 6 days ago

Fri, Jun 20 - Mon, Jun 30

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$301 Roundtrip, found 6 days ago

$301

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Fri, Jun 20 from San Antonio Intl. to Luis Munoz Marin Intl., returning Mon, Jun 30, priced at $301 found 6 days ago

Tue, Jul 8 - Thu, Jul 10

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$325 Roundtrip, found 17 hours ago

$325

Roundtrip

found 17 hours ago

Select American Airlines flight, departing Tue, Jul 8 from San Antonio Intl. to Luis Munoz Marin Intl., returning Thu, Jul 10, priced at $325 found 17 hours ago

Mon, Jul 7 - Fri, Jul 11

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$338 Roundtrip, found 17 hours ago

$338

Roundtrip

found 17 hours ago

Select United flight, departing Mon, Jul 7 from San Antonio Intl. to Luis Munoz Marin Intl., returning Fri, Jul 11, priced at $338 found 17 hours ago

Fri, Jun 20 - Thu, Jun 26

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$348 Roundtrip, found 6 days ago

$348

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Jun 20 from San Antonio Intl. to Luis Munoz Marin Intl., returning Thu, Jun 26, priced at $348 found 6 days ago

Mon, Jun 23 - Fri, Jun 27

SAT

San Antonio Intl.

SJU

Luis Munoz Marin Intl.

$551 Roundtrip, found 6 days ago

$551

Roundtrip

found 6 days ago

Select Delta flight, departing Mon, Jun 23 from San Antonio Intl. to Luis Munoz Marin Intl., returning Fri, Jun 27, priced at $551 found 6 days ago