Cheap Spirit Airlines flights Boston (BOS) to St. Louis (STL)

Cheap Spirit Airlines flights Boston (BOS) to St. Louis (STL)

Prices were available within the past 7 days and start at for one-way flights and $245 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Sep 17 - Thu, Sep 25

BOS

Boston

STL

St. Louis

$245 Roundtrip, found 14 hours ago

$245

Roundtrip

found 14 hours ago

Select Spirit Airlines flight, departing Wed, Sep 17 from Boston to St. Louis, returning Thu, Sep 25, priced at $245 found 14 hours ago

Sat, Sep 20 - Thu, Sep 25

BOS

Boston

STL

St. Louis

$255 Roundtrip, found 14 hours ago

$255

Roundtrip

found 14 hours ago

Select Spirit Airlines flight, departing Sat, Sep 20 from Boston to St. Louis, returning Thu, Sep 25, priced at $255 found 14 hours ago