$200 Cheap Frontier Airlines flights Portland (PDX) to St. Louis (STL)

$200 Cheap Frontier Airlines flights Portland (PDX) to St. Louis (STL)

Prices were available within the past 7 days and start at $200 for one-way flights and $379 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jun 1 - Mon, Jun 22

PDX

Portland

STL

St. Louis

$379 Roundtrip, found 1 day ago

$379

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Jun 1 from Portland to St. Louis, returning Mon, Jun 22, priced at $379 found 1 day ago

Sun, Jun 7 - Fri, Jun 26

PDX

Portland

STL

St. Louis

$380 Roundtrip, found 1 day ago

$380

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Jun 7 from Portland to St. Louis, returning Fri, Jun 26, priced at $380 found 1 day ago

Mon, Jun 1 - Thu, Jun 25

PDX

Portland

STL

St. Louis

$400 Roundtrip, found 1 day ago

$400

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Jun 1 from Portland to St. Louis, returning Thu, Jun 25, priced at $400 found 1 day ago

Thu, Jun 4 - Wed, Jun 24

PDX

Portland

STL

St. Louis

$453 Roundtrip, found 1 day ago

$453

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Jun 4 from Portland to St. Louis, returning Wed, Jun 24, priced at $453 found 1 day ago

Sun, Jun 7 - Sat, Jun 27

PDX

Portland

STL

St. Louis

$465 Roundtrip, found 1 day ago

$465

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Jun 7 from Portland to St. Louis, returning Sat, Jun 27, priced at $465 found 1 day ago

Mon, Jun 1 - Sun, Jun 21

PDX

Portland

STL

St. Louis

$470 Roundtrip, found 1 day ago

$470

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Jun 1 from Portland to St. Louis, returning Sun, Jun 21, priced at $470 found 1 day ago