Flights from St. Louis to Troutdale

Cheapest flights from St. Louis

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jun 14 - Fri, Jun 20

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$315 Roundtrip, found 3 days ago

$315

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sat, Jun 14 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jun 20, priced at $315 found 3 days ago

Thu, Jul 17 - Fri, Jul 18

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$317 Roundtrip, found 4 days ago

$317

Roundtrip

found 4 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jul 18, priced at $317 found 4 days ago

Mon, Jun 16 - Fri, Jun 20

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$324 Roundtrip, found 3 days ago

$324

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Jun 16 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jun 20, priced at $324 found 3 days ago

Thu, Jul 17 - Fri, Jul 18

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$327 Roundtrip, found 4 days ago

$327

Roundtrip

found 4 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jul 18, priced at $327 found 4 days ago

Sat, Jun 14 - Sun, Jun 15

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$330 Roundtrip, found 3 days ago

$330

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sat, Jun 14 from Lambert-St. Louis Intl. to Portland Intl., returning Sun, Jun 15, priced at $330 found 3 days ago

Fri, Jun 13 - Fri, Jun 20

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$333 Roundtrip, found 3 days ago

$333

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Jun 13 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jun 20, priced at $333 found 3 days ago

Wed, Jun 11 - Thu, Jun 12

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$339 Roundtrip, found 3 days ago

$339

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Lambert-St. Louis Intl. to Portland Intl., returning Thu, Jun 12, priced at $339 found 3 days ago

Sat, Jun 14 - Thu, Jun 19

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$345 Roundtrip, found 3 days ago

$345

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sat, Jun 14 from Lambert-St. Louis Intl. to Portland Intl., returning Thu, Jun 19, priced at $345 found 3 days ago

Fri, Jun 13 - Sun, Jun 15

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$348 Roundtrip, found 3 days ago

$348

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Jun 13 from Lambert-St. Louis Intl. to Portland Intl., returning Sun, Jun 15, priced at $348 found 3 days ago

Thu, Jul 17 - Fri, Jul 18

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$349 Roundtrip, found 4 days ago

$349

Roundtrip

found 4 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jul 18, priced at $349 found 4 days ago

Mon, Jun 16 - Thu, Jun 19

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$354 Roundtrip, found 3 days ago

$354

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Jun 16 from Lambert-St. Louis Intl. to Portland Intl., returning Thu, Jun 19, priced at $354 found 3 days ago

Thu, Jul 17 - Fri, Jul 18

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$361 Roundtrip, found 4 days ago

$361

Roundtrip

found 4 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jul 18, priced at $361 found 4 days ago

Fri, Jun 13 - Thu, Jun 19

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$363 Roundtrip, found 3 days ago

$363

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Jun 13 from Lambert-St. Louis Intl. to Portland Intl., returning Thu, Jun 19, priced at $363 found 3 days ago

Thu, Jul 17 - Fri, Jul 18

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$382 Roundtrip, found 4 days ago

$382

Roundtrip

found 4 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jul 18, priced at $382 found 4 days ago

Thu, Jul 17 - Fri, Jul 18

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$388 Roundtrip, found 4 days ago

$388

Roundtrip

found 4 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jul 18, priced at $388 found 4 days ago

Thu, Jul 17 - Fri, Jul 18

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$392 Roundtrip, found 4 days ago

$392

Roundtrip

found 4 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jul 18, priced at $392 found 4 days ago

Thu, Jul 17 - Fri, Jul 18

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$396 Roundtrip, found 4 days ago

$396

Roundtrip

found 4 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jul 18, priced at $396 found 4 days ago

Thu, Jul 17 - Fri, Jul 18

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$402 Roundtrip, found 4 days ago

$402

Roundtrip

found 4 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jul 18, priced at $402 found 4 days ago

Tue, Jun 10 - Fri, Jun 20

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$424 Roundtrip, found 3 days ago

$424

Roundtrip

found 3 days ago

Select Hawaiian Airlines flight, departing Tue, Jun 10 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jun 20, priced at $424 found 3 days ago

Thu, Jul 17 - Fri, Jul 18

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$443 Roundtrip, found 4 days ago

$443

Roundtrip

found 4 days ago

Select Delta flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Fri, Jul 18, priced at $443 found 4 days ago