$246 Cheap Frontier Airlines flights St. Louis (STL) to Portland (PDX)

$246 Cheap Frontier Airlines flights St. Louis (STL) to Portland (PDX)

Prices were available within the past 7 days and start at $246 for one-way flights and $360 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jun 25 - Sun, Jun 29

STL

St. Louis

PDX

Portland

$360 Roundtrip, found 1 day ago

$360

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Jun 25 from St. Louis to Portland, returning Sun, Jun 29, priced at $360 found 1 day ago

Fri, Jun 27 - Sun, Jun 29

STL

St. Louis

PDX

Portland

$442 Roundtrip, found 1 day ago

$442

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Jun 27 from St. Louis to Portland, returning Sun, Jun 29, priced at $442 found 1 day ago