Flights from Collinsville to Portland

Cheapest flights from Collinsville

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.

Thu, Jul 17 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$297 Roundtrip, found 2 days ago

$297

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $297 found 2 days ago

Thu, Jul 17 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$297 Roundtrip, found 2 days ago

$297

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $297 found 2 days ago

Tue, Jul 15 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$297 Roundtrip, found 2 days ago

$297

Roundtrip

found 2 days ago

Select Delta flight, departing Tue, Jul 15 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $297 found 2 days ago

Thu, Jul 17 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$321 Roundtrip, found 2 days ago

$321

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $321 found 2 days ago

Thu, Jul 17 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$326 Roundtrip, found 2 days ago

$326

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $326 found 2 days ago

Tue, Jul 15 - Mon, Jul 21

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$338 Roundtrip, found 2 days ago

$338

Roundtrip

found 2 days ago

Select Delta flight, departing Tue, Jul 15 from Lambert-St. Louis Intl. to Portland Intl., returning Mon, Jul 21, priced at $338 found 2 days ago

Thu, Jul 17 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$342 Roundtrip, found 2 days ago

$342

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $342 found 2 days ago

Thu, Jul 17 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$357 Roundtrip, found 2 days ago

$357

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $357 found 2 days ago

Thu, Jul 17 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$358 Roundtrip, found 2 days ago

$358

Roundtrip

found 2 days ago

Select American Airlines flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $358 found 2 days ago

Thu, Jul 17 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$366 Roundtrip, found 2 days ago

$366

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $366 found 2 days ago

Sun, Jul 20 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$378 Roundtrip, found 2 days ago

$378

Roundtrip

found 2 days ago

Select Delta flight, departing Sun, Jul 20 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $378 found 2 days ago

Thu, Jul 17 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$378 Roundtrip, found 2 days ago

$378

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $378 found 2 days ago

Thu, Jul 17 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$382 Roundtrip, found 2 days ago

$382

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $382 found 2 days ago

Thu, Jul 17 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$387 Roundtrip, found 2 days ago

$387

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $387 found 2 days ago

Sat, Jul 19 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$390 Roundtrip, found 2 days ago

$390

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Jul 19 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $390 found 2 days ago

Thu, Jul 17 - Sun, Jul 20

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$395 Roundtrip, found 2 days ago

$395

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Sun, Jul 20, priced at $395 found 2 days ago

Sat, Jul 19 - Thu, Jul 24

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$396 Roundtrip, found 2 days ago

$396

Roundtrip

found 2 days ago

Select Hawaiian Airlines flight, departing Sat, Jul 19 from Lambert-St. Louis Intl. to Portland Intl., returning Thu, Jul 24, priced at $396 found 2 days ago

Fri, Jul 18 - Sun, Jul 20

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$400 Roundtrip, found 2 days ago

$400

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Jul 18 from Lambert-St. Louis Intl. to Portland Intl., returning Sun, Jul 20, priced at $400 found 2 days ago

Thu, Jul 17 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$402 Roundtrip, found 2 days ago

$402

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 17 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $402 found 2 days ago

Sat, Jul 19 - Wed, Jul 23

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$422 Roundtrip, found 2 days ago

$422

Roundtrip

found 2 days ago

Select Alaska Airlines flight, departing Sat, Jul 19 from Lambert-St. Louis Intl. to Portland Intl., returning Wed, Jul 23, priced at $422 found 2 days ago