Flights from St. Louis to Salem

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.

Sun, Jul 20 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$290 Roundtrip, found 6 days ago

$290

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sun, Jul 20 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $290 found 6 days ago

Wed, Jul 16 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$294 Roundtrip, found 6 days ago

$294

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Jul 16 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $294 found 6 days ago

Fri, Jul 18 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$300 Roundtrip, found 6 days ago

$300

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Jul 18 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $300 found 6 days ago

Sat, Jul 19 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$315 Roundtrip, found 22 hours ago

$315

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Sat, Jul 19 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $315 found 22 hours ago

Sat, Jul 19 - Thu, Jul 24

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$326 Roundtrip, found 22 hours ago

$326

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Sat, Jul 19 from Lambert-St. Louis Intl. to Portland Intl., returning Thu, Jul 24, priced at $326 found 22 hours ago

Tue, Jul 22 - Mon, Jul 28

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$335 Roundtrip, found 6 days ago

$335

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Tue, Jul 22 from Lambert-St. Louis Intl. to Portland Intl., returning Mon, Jul 28, priced at $335 found 6 days ago

Tue, Jul 22 - Mon, Jul 28

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$335 Roundtrip, found 6 days ago

$335

Roundtrip

found 6 days ago

Select United flight, departing Tue, Jul 22 from Lambert-St. Louis Intl. to Portland Intl., returning Mon, Jul 28, priced at $335 found 6 days ago

Tue, Jul 22 - Mon, Jul 28

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$335 Roundtrip, found 6 days ago

$335

Roundtrip

found 6 days ago

Select American Airlines flight, departing Tue, Jul 22 from Lambert-St. Louis Intl. to Portland Intl., returning Mon, Jul 28, priced at $335 found 6 days ago

Wed, Jul 16 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$350 Roundtrip, found 22 hours ago

$350

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Wed, Jul 16 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $350 found 22 hours ago

Wed, Jul 16 - Wed, Jul 23

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$352 Roundtrip, found 22 hours ago

$352

Roundtrip

found 22 hours ago

Select Alaska Airlines flight, departing Wed, Jul 16 from Lambert-St. Louis Intl. to Portland Intl., returning Wed, Jul 23, priced at $352 found 22 hours ago

Wed, Jul 16 - Wed, Jul 23

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$352 Roundtrip, found 22 hours ago

$352

Roundtrip

found 22 hours ago

Select Delta flight, departing Wed, Jul 16 from Lambert-St. Louis Intl. to Portland Intl., returning Wed, Jul 23, priced at $352 found 22 hours ago

Mon, Jul 14 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$354 Roundtrip, found 6 days ago

$354

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Mon, Jul 14 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $354 found 6 days ago

Mon, Jul 14 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$355 Roundtrip, found 22 hours ago

$355

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Mon, Jul 14 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $355 found 22 hours ago

Tue, Jul 22 - Mon, Jul 28

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$357 Roundtrip, found 6 days ago

$357

Roundtrip

found 6 days ago

Select United flight, departing Tue, Jul 22 from Lambert-St. Louis Intl. to Portland Intl., returning Mon, Jul 28, priced at $357 found 6 days ago

Fri, Jul 18 - Tue, Jul 22

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$359 Roundtrip, found 22 hours ago

$359

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Fri, Jul 18 from Lambert-St. Louis Intl. to Portland Intl., returning Tue, Jul 22, priced at $359 found 22 hours ago

Wed, Jul 16 - Thu, Jul 24

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$361 Roundtrip, found 22 hours ago

$361

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Wed, Jul 16 from Lambert-St. Louis Intl. to Portland Intl., returning Thu, Jul 24, priced at $361 found 22 hours ago

Mon, Jul 14 - Thu, Jul 24

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$366 Roundtrip, found 22 hours ago

$366

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Mon, Jul 14 from Lambert-St. Louis Intl. to Portland Intl., returning Thu, Jul 24, priced at $366 found 22 hours ago

Wed, Jul 16 - Wed, Jul 23

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$375 Roundtrip, found 22 hours ago

$375

Roundtrip

found 22 hours ago

Select Delta flight, departing Wed, Jul 16 from Lambert-St. Louis Intl. to Portland Intl., returning Wed, Jul 23, priced at $375 found 22 hours ago

Tue, Jul 22 - Mon, Jul 28

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$387 Roundtrip, found 6 days ago

$387

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Tue, Jul 22 from Lambert-St. Louis Intl. to Portland Intl., returning Mon, Jul 28, priced at $387 found 6 days ago

Sat, Jul 19 - Wed, Jul 23

STL

Lambert-St. Louis Intl.

PDX

Portland Intl.

$453 Roundtrip, found 22 hours ago

$453

Roundtrip

found 22 hours ago

Select Hawaiian Airlines flight, departing Sat, Jul 19 from Lambert-St. Louis Intl. to Portland Intl., returning Wed, Jul 23, priced at $453 found 22 hours ago