$103 Cheap Frontier Airlines flights St. Louis (STL) to Phoenix (PHX)

$103 Cheap Frontier Airlines flights St. Louis (STL) to Phoenix (PHX)

Prices were available within the past 7 days and start at $103 for one-way flights and $270 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jun 11 - Tue, Jun 17

STL

St. Louis

PHX

Phoenix

$270 Roundtrip, found 18 hours ago

$270

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Wed, Jun 11 from St. Louis to Phoenix, returning Tue, Jun 17, priced at $270 found 18 hours ago

Fri, Jun 13 - Mon, Jun 16

STL

St. Louis

PHX

Phoenix

$368 Roundtrip, found 16 hours ago

$368

Roundtrip

found 16 hours ago

Select Frontier Airlines flight, departing Fri, Jun 13 from St. Louis to Phoenix, returning Mon, Jun 16, priced at $368 found 16 hours ago