$143 Cheap Frontier Airlines flights Boston (BOS) to San Juan (SJU)

$143 Cheap Frontier Airlines flights Boston (BOS) to San Juan (SJU)

Prices were available within the past 7 days and start at $143 for one-way flights and $365 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jul 7 - Thu, Jul 23

BOS

Boston

SJU

San Juan

$365 Roundtrip, found 2 days ago

$365

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Jul 7 from Boston to San Juan, returning Thu, Jul 23, priced at $365 found 2 days ago

Sun, Jul 12 - Thu, Jul 23

BOS

Boston

SJU

San Juan

$376 Roundtrip, found 2 days ago

$376

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sun, Jul 12 from Boston to San Juan, returning Thu, Jul 23, priced at $376 found 2 days ago

Tue, Jul 7 - Wed, Jul 22

BOS

Boston

SJU

San Juan

$386 Roundtrip, found 2 days ago

$386

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Jul 7 from Boston to San Juan, returning Wed, Jul 22, priced at $386 found 2 days ago

Thu, Jul 9 - Thu, Jul 23

BOS

Boston

SJU

San Juan

$394 Roundtrip, found 2 days ago

$394

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Jul 9 from Boston to San Juan, returning Thu, Jul 23, priced at $394 found 2 days ago

Sun, Jul 12 - Wed, Jul 22

BOS

Boston

SJU

San Juan

$397 Roundtrip, found 2 days ago

$397

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sun, Jul 12 from Boston to San Juan, returning Wed, Jul 22, priced at $397 found 2 days ago

Sat, Jul 11 - Mon, Jul 27

BOS

Boston

SJU

San Juan

$410 Roundtrip, found 2 days ago

$410

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Jul 11 from Boston to San Juan, returning Mon, Jul 27, priced at $410 found 2 days ago

Thu, Jul 9 - Mon, Jul 27

BOS

Boston

SJU

San Juan

$415 Roundtrip, found 2 days ago

$415

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Jul 9 from Boston to San Juan, returning Mon, Jul 27, priced at $415 found 2 days ago

Tue, Jul 7 - Sun, Jul 26

BOS

Boston

SJU

San Juan

$436 Roundtrip, found 2 days ago

$436

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Jul 7 from Boston to San Juan, returning Sun, Jul 26, priced at $436 found 2 days ago

Sun, Jul 12 - Sat, Jul 25

BOS

Boston

SJU

San Juan

$442 Roundtrip, found 2 days ago

$442

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sun, Jul 12 from Boston to San Juan, returning Sat, Jul 25, priced at $442 found 2 days ago