$315 Cheap United flights Philadelphia (PHL) to St. Louis (STL)

$315 Cheap United flights Philadelphia (PHL) to St. Louis (STL)

Prices were available within the past 7 days and start at $315 for one-way flights and $613 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

$613 Roundtrip, found 2 days ago

$613

Roundtrip

found 2 days ago

Select United flight, departing Wed, Oct 1 from Philadelphia to St. Louis, returning Sun, Oct 5, priced at $613 found 2 days ago

Wed, Oct 1 - Sun, Oct 5

PHL

Philadelphia

STL

St. Louis

$668 Roundtrip, found 2 days ago

$668

Roundtrip

found 2 days ago

Select United flight, departing Wed, Oct 1 from Philadelphia to St. Louis, returning Sun, Oct 5, priced at $668 found 2 days ago