Flights from St. Louis to Portland

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.

Tue, Sep 23 - Wed, Sep 24

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$251 Roundtrip, found 1 day ago

$251

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Wed, Sep 24, priced at $251 found 1 day ago

Tue, Sep 23 - Fri, Sep 26

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$267 Roundtrip, found 1 day ago

$267

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Fri, Sep 26, priced at $267 found 1 day ago

Sun, Sep 14 - Wed, Sep 24

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$278 Roundtrip, found 1 day ago

$278

Roundtrip

found 1 day ago

Select Delta flight, departing Sun, Sep 14 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Wed, Sep 24, priced at $278 found 1 day ago

Sun, Sep 21 - Wed, Sep 24

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$285 Roundtrip, found 1 day ago

$285

Roundtrip

found 1 day ago

Select Delta flight, departing Sun, Sep 21 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Wed, Sep 24, priced at $285 found 1 day ago

Sun, Sep 14 - Fri, Sep 26

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$294 Roundtrip, found 1 day ago

$294

Roundtrip

found 1 day ago

Select Delta flight, departing Sun, Sep 14 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Fri, Sep 26, priced at $294 found 1 day ago

Sun, Sep 21 - Fri, Sep 26

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$301 Roundtrip, found 1 day ago

$301

Roundtrip

found 1 day ago

Select Delta flight, departing Sun, Sep 21 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Fri, Sep 26, priced at $301 found 1 day ago

Sun, Oct 5 - Wed, Oct 8

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$312 Roundtrip, found 2 days ago

$312

Roundtrip

found 2 days ago

Select Delta flight, departing Sun, Oct 5 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Wed, Oct 8, priced at $312 found 2 days ago

Fri, Sep 19 - Wed, Sep 24

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$319 Roundtrip, found 1 day ago

$319

Roundtrip

found 1 day ago

Select Delta flight, departing Fri, Sep 19 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Wed, Sep 24, priced at $319 found 1 day ago

Tue, Sep 23 - Mon, Sep 29

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$322 Roundtrip, found 1 day ago

$322

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Sep 23 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Mon, Sep 29, priced at $322 found 1 day ago

Tue, Oct 7 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$327 Roundtrip, found 2 days ago

$327

Roundtrip

found 2 days ago

Select American Airlines flight, departing Tue, Oct 7 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Sat, Oct 11, priced at $327 found 2 days ago

Fri, Sep 19 - Fri, Sep 26

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$335 Roundtrip, found 1 day ago

$335

Roundtrip

found 1 day ago

Select Delta flight, departing Fri, Sep 19 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Fri, Sep 26, priced at $335 found 1 day ago

Sat, Oct 4 - Thu, Oct 9

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$338 Roundtrip, found 2 days ago

$338

Roundtrip

found 2 days ago

Select Delta flight, departing Sat, Oct 4 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Thu, Oct 9, priced at $338 found 2 days ago

Sun, Oct 5 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$340 Roundtrip, found 2 days ago

$340

Roundtrip

found 2 days ago

Select Delta flight, departing Sun, Oct 5 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Sat, Oct 11, priced at $340 found 2 days ago

Sun, Sep 14 - Thu, Sep 25

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$346 Roundtrip, found 1 day ago

$346

Roundtrip

found 1 day ago

Select Delta flight, departing Sun, Sep 14 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Thu, Sep 25, priced at $346 found 1 day ago

Tue, Sep 16 - Sun, Sep 21

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$349 Roundtrip, found 1 day ago

$349

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Sep 16 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Sun, Sep 21, priced at $349 found 1 day ago

Sun, Sep 14 - Mon, Sep 22

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$349 Roundtrip, found 1 day ago

$349

Roundtrip

found 1 day ago

Select Delta flight, departing Sun, Sep 14 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Mon, Sep 22, priced at $349 found 1 day ago

Sun, Sep 21 - Thu, Sep 25

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$353 Roundtrip, found 1 day ago

$353

Roundtrip

found 1 day ago

Select Delta flight, departing Sun, Sep 21 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Thu, Sep 25, priced at $353 found 1 day ago

Tue, Oct 7 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$355 Roundtrip, found 2 days ago

$355

Roundtrip

found 2 days ago

Select American Airlines flight, departing Tue, Oct 7 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Sat, Oct 11, priced at $355 found 2 days ago

Sun, Sep 21 - Mon, Sep 29

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$356 Roundtrip, found 1 day ago

$356

Roundtrip

found 1 day ago

Select Delta flight, departing Sun, Sep 21 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Mon, Sep 29, priced at $356 found 1 day ago

Tue, Oct 7 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

PWM

Portland Intl. Jetport

$356 Roundtrip, found 2 days ago

$356

Roundtrip

found 2 days ago

Select United flight, departing Tue, Oct 7 from Lambert-St. Louis Intl. to Portland Intl. Jetport, returning Sat, Oct 11, priced at $356 found 2 days ago