$161 Cheap Frontier Airlines flights St. Louis (STL) to Portland (PDX)

$161 Cheap Frontier Airlines flights St. Louis (STL) to Portland (PDX)

Prices were available within the past 7 days and start at $161 for one-way flights and $250 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Jul 26 - Sun, Aug 2

STL

St. Louis

PDX

Portland

$250 Roundtrip, found 18 hours ago

$250

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Sun, Jul 26 from St. Louis to Portland, returning Sun, Aug 2, priced at $250 found 18 hours ago

Sun, Jul 26 - Tue, Aug 4

STL

St. Louis

PDX

Portland

$275 Roundtrip, found 18 hours ago

$275

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Sun, Jul 26 from St. Louis to Portland, returning Tue, Aug 4, priced at $275 found 18 hours ago

Tue, Jul 28 - Sun, Aug 2

STL

St. Louis

PDX

Portland

$285 Roundtrip, found 18 hours ago

$285

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Tue, Jul 28 from St. Louis to Portland, returning Sun, Aug 2, priced at $285 found 18 hours ago

Mon, Sep 21 - Fri, Sep 25

STL

St. Louis

PDX

Portland

$286 Roundtrip, found 5 days ago

$286

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Sep 21 from St. Louis to Portland, returning Fri, Sep 25, priced at $286 found 5 days ago

Mon, Jul 27 - Sun, Aug 2

STL

St. Louis

PDX

Portland

$289 Roundtrip, found 18 hours ago

$289

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Mon, Jul 27 from St. Louis to Portland, returning Sun, Aug 2, priced at $289 found 18 hours ago

Tue, Jul 28 - Tue, Aug 4

STL

St. Louis

PDX

Portland

$310 Roundtrip, found 18 hours ago

$310

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Tue, Jul 28 from St. Louis to Portland, returning Tue, Aug 4, priced at $310 found 18 hours ago

Mon, Jul 27 - Tue, Aug 4

STL

St. Louis

PDX

Portland

$314 Roundtrip, found 18 hours ago

$314

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Mon, Jul 27 from St. Louis to Portland, returning Tue, Aug 4, priced at $314 found 18 hours ago

Sat, Jul 25 - Sun, Aug 2

STL

St. Louis

PDX

Portland

$315 Roundtrip, found 18 hours ago

$315

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Sat, Jul 25 from St. Louis to Portland, returning Sun, Aug 2, priced at $315 found 18 hours ago

Mon, Sep 21 - Mon, Sep 28

STL

St. Louis

PDX

Portland

$321 Roundtrip, found 5 days ago

$321

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Sep 21 from St. Louis to Portland, returning Mon, Sep 28, priced at $321 found 5 days ago

Sun, Sep 20 - Thu, Oct 1

STL

St. Louis

PDX

Portland

$351 Roundtrip, found 5 days ago

$351

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, Sep 20 from St. Louis to Portland, returning Thu, Oct 1, priced at $351 found 5 days ago