Flights from Portland to St. Louis

Cheapest flights from Portland

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.

Tue, Jun 10 - Wed, Jun 11

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$227 Roundtrip, found 1 day ago

$227

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Wed, Jun 11, priced at $227 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$227 Roundtrip, found 1 day ago

$227

Roundtrip

found 1 day ago

Select American Airlines flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $227 found 1 day ago

Mon, Jun 9 - Wed, Jun 11

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$267 Roundtrip, found 1 day ago

$267

Roundtrip

found 1 day ago

Select Delta flight, departing Mon, Jun 9 from Portland Intl. to Lambert-St. Louis Intl., returning Wed, Jun 11, priced at $267 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$272 Roundtrip, found 1 day ago

$272

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $272 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$273 Roundtrip, found 1 day ago

$273

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $273 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$276 Roundtrip, found 1 day ago

$276

Roundtrip

found 1 day ago

Select United flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $276 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$284 Roundtrip, found 1 day ago

$284

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $284 found 1 day ago

Tue, Jun 10 - Thu, Jun 12

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$299 Roundtrip, found 1 day ago

$299

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Thu, Jun 12, priced at $299 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$303 Roundtrip, found 1 day ago

$303

Roundtrip

found 1 day ago

Select American Airlines flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $303 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$305 Roundtrip, found 1 day ago

$305

Roundtrip

found 1 day ago

Select United flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $305 found 1 day ago

Sun, Jun 8 - Sat, Jun 14

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$309 Roundtrip, found 1 day ago

$309

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sun, Jun 8 from Portland Intl. to Lambert-St. Louis Intl., returning Sat, Jun 14, priced at $309 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$312 Roundtrip, found 1 day ago

$312

Roundtrip

found 1 day ago

Select United flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $312 found 1 day ago

Mon, Jun 9 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$313 Roundtrip, found 1 day ago

$313

Roundtrip

found 1 day ago

Select Delta flight, departing Mon, Jun 9 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $313 found 1 day ago

Thu, Jun 12 - Sat, Jun 14

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$317 Roundtrip, found 1 day ago

$317

Roundtrip

found 1 day ago

Select United flight, departing Thu, Jun 12 from Portland Intl. to Lambert-St. Louis Intl., returning Sat, Jun 14, priced at $317 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$318 Roundtrip, found 1 day ago

$318

Roundtrip

found 1 day ago

Select American Airlines flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $318 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$319 Roundtrip, found 1 day ago

$319

Roundtrip

found 1 day ago

Select American Airlines flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $319 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$321 Roundtrip, found 1 day ago

$321

Roundtrip

found 1 day ago

Select American Airlines flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $321 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$321 Roundtrip, found 1 day ago

$321

Roundtrip

found 1 day ago

Select United flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $321 found 1 day ago

Sat, Jun 7 - Thu, Jun 12

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$385 Roundtrip, found 1 day ago

$385

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Sat, Jun 7 from Portland Intl. to Lambert-St. Louis Intl., returning Thu, Jun 12, priced at $385 found 1 day ago

Tue, Jun 10 - Fri, Jun 13

PDX

Portland Intl.

STL

Lambert-St. Louis Intl.

$385 Roundtrip, found 1 day ago

$385

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Tue, Jun 10 from Portland Intl. to Lambert-St. Louis Intl., returning Fri, Jun 13, priced at $385 found 1 day ago