$119 Cheap United flights Philadelphia (PHL) to St. Louis (STL)

$119 Cheap United flights Philadelphia (PHL) to St. Louis (STL)

Prices were available within the past 7 days and start at $119 for one-way flights and $237 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia

STL

St. Louis

$237 Roundtrip, found 21 hours ago

$237

Roundtrip

found 21 hours ago

Select United flight, departing Wed, Sep 24 from Philadelphia to St. Louis, returning Mon, Sep 29, priced at $237 found 21 hours ago

Thu, Sep 25 - Sun, Sep 28

PHL

Philadelphia

STL

St. Louis

$272 Roundtrip, found 19 hours ago

$272

Roundtrip

found 19 hours ago

Select United flight, departing Thu, Sep 25 from Philadelphia to St. Louis, returning Sun, Sep 28, priced at $272 found 19 hours ago

Wed, Sep 24 - Mon, Sep 29

PHL

Philadelphia

STL

St. Louis

$297 Roundtrip, found 21 hours ago

$297

Roundtrip

found 21 hours ago

Select United flight, departing Wed, Sep 24 from Philadelphia to St. Louis, returning Mon, Sep 29, priced at $297 found 21 hours ago

Thu, Sep 25 - Sun, Sep 28

PHL

Philadelphia

STL

St. Louis

$307 Roundtrip, found 19 hours ago

$307

Roundtrip

found 19 hours ago

Select United flight, departing Thu, Sep 25 from Philadelphia to St. Louis, returning Sun, Sep 28, priced at $307 found 19 hours ago

Thu, Sep 25 - Sun, Sep 28

PHL

Philadelphia

STL

St. Louis

$315 Roundtrip, found 19 hours ago

$315

Roundtrip

found 19 hours ago

Select United flight, departing Thu, Sep 25 from Philadelphia to St. Louis, returning Sun, Sep 28, priced at $315 found 19 hours ago