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

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

Prices were available within the past 7 days and start at for one-way flights and $168 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 31 - Fri, Nov 7

STL

St. Louis

PDX

Portland

$168 Roundtrip, found 18 hours ago

$168

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Fri, Oct 31 from St. Louis to Portland, returning Fri, Nov 7, priced at $168 found 18 hours ago

Wed, Nov 5 - Fri, Nov 7

STL

St. Louis

PDX

Portland

$182 Roundtrip, found 18 hours ago

$182

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Wed, Nov 5 from St. Louis to Portland, returning Fri, Nov 7, priced at $182 found 18 hours ago

Wed, Nov 5 - Thu, Nov 13

STL

St. Louis

PDX

Portland

$196 Roundtrip, found 18 hours ago

$196

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Wed, Nov 5 from St. Louis to Portland, returning Thu, Nov 13, priced at $196 found 18 hours ago

Thu, Nov 6 - Fri, Nov 7

STL

St. Louis

PDX

Portland

$233 Roundtrip, found 18 hours ago

$233

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Thu, Nov 6 from St. Louis to Portland, returning Fri, Nov 7, priced at $233 found 18 hours ago

Thu, Nov 6 - Thu, Nov 13

STL

St. Louis

PDX

Portland

$247 Roundtrip, found 18 hours ago

$247

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Thu, Nov 6 from St. Louis to Portland, returning Thu, Nov 13, priced at $247 found 18 hours ago