$279 Cheap Frontier Airlines flights Phoenix (PHX) to St. Louis (STL)

$279 Cheap Frontier Airlines flights Phoenix (PHX) to St. Louis (STL)

Prices were available within the past 7 days and start at $279 for one-way flights and $208 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Nov 7 - Mon, Nov 10

PHX

Phoenix

STL

St. Louis

$208 Roundtrip, found 2 days ago

$208

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Nov 7 from Phoenix to St. Louis, returning Mon, Nov 10, priced at $208 found 2 days ago

Fri, Nov 7 - Tue, Nov 11

PHX

Phoenix

STL

St. Louis

$275 Roundtrip, found 2 days ago

$275

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Nov 7 from Phoenix to St. Louis, returning Tue, Nov 11, priced at $275 found 2 days ago

Tue, Nov 11 - Wed, Nov 12

PHX

Phoenix

STL

St. Louis

$304 Roundtrip, found 2 days ago

$304

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Nov 11 from Phoenix to St. Louis, returning Wed, Nov 12, priced at $304 found 2 days ago

Wed, Nov 5 - Fri, Nov 7

PHX

Phoenix

STL

St. Louis

$321 Roundtrip, found 2 days ago

$321

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Nov 5 from Phoenix to St. Louis, returning Fri, Nov 7, priced at $321 found 2 days ago

Thu, Nov 6 - Sun, Nov 9

PHX

Phoenix

STL

St. Louis

$326 Roundtrip, found 2 days ago

$326

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Nov 6 from Phoenix to St. Louis, returning Sun, Nov 9, priced at $326 found 2 days ago