$144 Cheap Spirit Airlines flights Philadelphia (PHL) to St. Louis (STL)

$144 Cheap Spirit Airlines flights Philadelphia (PHL) to St. Louis (STL)

Prices were available within the past 7 days and start at $144 for one-way flights and $311 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jun 19 - Fri, Jun 20

PHL

Philadelphia

STL

St. Louis

$311 Roundtrip, found 11 hours ago

$311

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Thu, Jun 19 from Philadelphia to St. Louis, returning Fri, Jun 20, priced at $311 found 11 hours ago

Sun, Jun 29 - Fri, Jul 11

PHL

Philadelphia

STL

St. Louis

$327 Roundtrip, found 17 hours ago

$327

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Sun, Jun 29 from Philadelphia to St. Louis, returning Fri, Jul 11, priced at $327 found 17 hours ago

Sun, Jun 22 - Mon, Jun 23

PHL

Philadelphia

STL

St. Louis

$346 Roundtrip, found 11 hours ago

$346

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Sun, Jun 22 from Philadelphia to St. Louis, returning Mon, Jun 23, priced at $346 found 11 hours ago

Fri, Jul 4 - Fri, Jul 11

PHL

Philadelphia

STL

St. Louis

$347 Roundtrip, found 17 hours ago

$347

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Fri, Jul 4 from Philadelphia to St. Louis, returning Fri, Jul 11, priced at $347 found 17 hours ago

Fri, Jun 20 - Sun, Jun 22

PHL

Philadelphia

STL

St. Louis

$352 Roundtrip, found 11 hours ago

$352

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Fri, Jun 20 from Philadelphia to St. Louis, returning Sun, Jun 22, priced at $352 found 11 hours ago

Thu, Jun 19 - Mon, Jun 23

PHL

Philadelphia

STL

St. Louis

$366 Roundtrip, found 11 hours ago

$366

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Thu, Jun 19 from Philadelphia to St. Louis, returning Mon, Jun 23, priced at $366 found 11 hours ago

Sun, Jun 29 - Thu, Jul 10

PHL

Philadelphia

STL

St. Louis

$392 Roundtrip, found 17 hours ago

$392

Roundtrip

found 17 hours ago

Select Spirit Airlines flight, departing Sun, Jun 29 from Philadelphia to St. Louis, returning Thu, Jul 10, priced at $392 found 17 hours ago

Fri, Jun 20 - Sun, Jun 22

PHL

Philadelphia

STL

St. Louis

$407 Roundtrip, found 11 hours ago

$407

Roundtrip

found 11 hours ago

Select Spirit Airlines flight, departing Fri, Jun 20 from Philadelphia to St. Louis, returning Sun, Jun 22, priced at $407 found 11 hours ago