$137 Cheap Frontier Airlines flights Boston (BOS) to San Juan (SJU)

$137 Cheap Frontier Airlines flights Boston (BOS) to San Juan (SJU)

Prices were available within the past 7 days and start at $137 for one-way flights and $243 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 18 - Fri, Aug 22

BOS

Boston

SJU

San Juan

$243 Roundtrip, found 23 hours ago

$243

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Mon, Aug 18 from Boston to San Juan, returning Fri, Aug 22, priced at $243 found 23 hours ago

Sun, Aug 17 - Thu, Aug 21

BOS

Boston

SJU

San Juan

$274 Roundtrip, found 23 hours ago

$274

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Sun, Aug 17 from Boston to San Juan, returning Thu, Aug 21, priced at $274 found 23 hours ago

Sun, Aug 17 - Fri, Aug 22

BOS

Boston

SJU

San Juan

$283 Roundtrip, found 6 days ago

$283

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sun, Aug 17 from Boston to San Juan, returning Fri, Aug 22, priced at $283 found 6 days ago

Fri, Aug 15 - Thu, Aug 21

BOS

Boston

SJU

San Juan

$284 Roundtrip, found 23 hours ago

$284

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Fri, Aug 15 from Boston to San Juan, returning Thu, Aug 21, priced at $284 found 23 hours ago

Thu, Aug 14 - Fri, Aug 22

BOS

Boston

SJU

San Juan

$290 Roundtrip, found 6 days ago

$290

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Aug 14 from Boston to San Juan, returning Fri, Aug 22, priced at $290 found 6 days ago