Cheap Spirit Airlines flights Philadelphia (PHL) to St. Louis (STL)

Cheap Spirit Airlines flights Philadelphia (PHL) to St. Louis (STL)

Prices were available within the past 7 days and start at for one-way flights and $390 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 1 - Sun, Oct 5

PHL

Philadelphia

STL

St. Louis

$390 Roundtrip, found 1 day ago

$390

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Wed, Oct 1 from Philadelphia to St. Louis, returning Sun, Oct 5, priced at $390 found 1 day ago

Sat, Sep 27 - Thu, Oct 2

PHL

Philadelphia

STL

St. Louis

$395 Roundtrip, found 1 day ago

$395

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sat, Sep 27 from Philadelphia to St. Louis, returning Thu, Oct 2, priced at $395 found 1 day ago