Cheap Frontier Airlines flights Boston (BOS) to San José (SJO)

Cheap Frontier Airlines flights Boston (BOS) to San José (SJO)

Prices were available within the past 7 days and start at for one-way flights and $428 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Feb 28 - Sat, Mar 14

BOS

Boston

SJO

San José

$428 Roundtrip, found 1 day ago

$428

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Feb 28 from Boston to San José, returning Sat, Mar 14, priced at $428 found 1 day ago