$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 $235 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Feb 7 - Tue, Feb 10

BOS

Boston

SJU

San Juan

$235 Roundtrip, found 4 days ago

$235

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Sat, Feb 7 from Boston to San Juan, returning Tue, Feb 10, priced at $235 found 4 days ago

Fri, Nov 14 - Tue, Nov 18

BOS

Boston

SJU

San Juan

$256 Roundtrip, found 4 days ago

$256

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Fri, Nov 14 from Boston to San Juan, returning Tue, Nov 18, priced at $256 found 4 days ago

Sat, Nov 15 - Thu, Nov 20

BOS

Boston

SJU

San Juan

$274 Roundtrip, found 4 days ago

$274

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Sat, Nov 15 from Boston to San Juan, returning Thu, Nov 20, priced at $274 found 4 days ago