$130 Cheap Frontier Airlines flights Phoenix (PHX) to St. Louis (STL)

$130 Cheap Frontier Airlines flights Phoenix (PHX) to St. Louis (STL)

Prices were available within the past 7 days and start at $130 for one-way flights and $240 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jun 30 - Wed, Jul 8

PHX

Phoenix

STL

St. Louis

$240 Roundtrip, found 1 day ago

$240

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jun 30 from Phoenix to St. Louis, returning Wed, Jul 8, priced at $240 found 1 day ago

Tue, Jun 30 - Sat, Jul 4

PHX

Phoenix

STL

St. Louis

$254 Roundtrip, found 1 day ago

$254

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jun 30 from Phoenix to St. Louis, returning Sat, Jul 4, priced at $254 found 1 day ago

Thu, Jul 2 - Wed, Jul 8

PHX

Phoenix

STL

St. Louis

$259 Roundtrip, found 1 day ago

$259

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Jul 2 from Phoenix to St. Louis, returning Wed, Jul 8, priced at $259 found 1 day ago

Fri, Jul 3 - Wed, Jul 8

PHX

Phoenix

STL

St. Louis

$260 Roundtrip, found 1 day ago

$260

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Jul 3 from Phoenix to St. Louis, returning Wed, Jul 8, priced at $260 found 1 day ago

Thu, Jul 2 - Sat, Jul 4

PHX

Phoenix

STL

St. Louis

$273 Roundtrip, found 1 day ago

$273

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Jul 2 from Phoenix to St. Louis, returning Sat, Jul 4, priced at $273 found 1 day ago

Fri, Jul 3 - Sat, Jul 4

PHX

Phoenix

STL

St. Louis

$274 Roundtrip, found 1 day ago

$274

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Jul 3 from Phoenix to St. Louis, returning Sat, Jul 4, priced at $274 found 1 day ago