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.

Sat, Sep 20 - Tue, Sep 30

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$251 Roundtrip, found 21 hours ago

$251

Roundtrip

found 21 hours ago

Select Delta flight, departing Sat, Sep 20 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Tue, Sep 30, priced at $251 found 21 hours ago

Fri, Sep 19 - Tue, Sep 30

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$257 Roundtrip, found 21 hours ago

$257

Roundtrip

found 21 hours ago

Select Delta flight, departing Fri, Sep 19 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Tue, Sep 30, priced at $257 found 21 hours ago

Sat, Sep 20 - Fri, Sep 26

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$285 Roundtrip, found 21 hours ago

$285

Roundtrip

found 21 hours ago

Select Delta flight, departing Sat, Sep 20 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Fri, Sep 26, priced at $285 found 21 hours ago

Fri, Sep 19 - Fri, Sep 26

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$291 Roundtrip, found 21 hours ago

$291

Roundtrip

found 21 hours ago

Select Delta flight, departing Fri, Sep 19 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Fri, Sep 26, priced at $291 found 21 hours ago

Sat, Sep 20 - Sun, Sep 28

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$300 Roundtrip, found 21 hours ago

$300

Roundtrip

found 21 hours ago

Select Delta flight, departing Sat, Sep 20 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Sun, Sep 28, priced at $300 found 21 hours ago

Fri, Sep 19 - Sun, Sep 28

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$306 Roundtrip, found 21 hours ago

$306

Roundtrip

found 21 hours ago

Select Delta flight, departing Fri, Sep 19 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Sun, Sep 28, priced at $306 found 21 hours ago

Sat, Sep 20 - Thu, Sep 25

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$319 Roundtrip, found 21 hours ago

$319

Roundtrip

found 21 hours ago

Select Delta flight, departing Sat, Sep 20 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Thu, Sep 25, priced at $319 found 21 hours ago

Mon, Sep 22 - Tue, Sep 30

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$322 Roundtrip, found 21 hours ago

$322

Roundtrip

found 21 hours ago

Select Delta flight, departing Mon, Sep 22 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Tue, Sep 30, priced at $322 found 21 hours ago

Fri, Sep 19 - Thu, Sep 25

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$325 Roundtrip, found 21 hours ago

$325

Roundtrip

found 21 hours ago

Select Delta flight, departing Fri, Sep 19 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Thu, Sep 25, priced at $325 found 21 hours ago

Mon, Sep 22 - Wed, Sep 24

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$327 Roundtrip, found 21 hours ago

$327

Roundtrip

found 21 hours ago

Select Delta flight, departing Mon, Sep 22 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Wed, Sep 24, priced at $327 found 21 hours ago

Mon, Sep 15 - Tue, Sep 23

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$331 Roundtrip, found 21 hours ago

$331

Roundtrip

found 21 hours ago

Select American Airlines flight, departing Mon, Sep 15 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Tue, Sep 23, priced at $331 found 21 hours ago

Mon, Sep 15 - Sat, Sep 27

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$347 Roundtrip, found 21 hours ago

$347

Roundtrip

found 21 hours ago

Select Delta flight, departing Mon, Sep 15 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Sat, Sep 27, priced at $347 found 21 hours ago

Sun, Sep 21 - Tue, Sep 30

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$349 Roundtrip, found 21 hours ago

$349

Roundtrip

found 21 hours ago

Select Delta flight, departing Sun, Sep 21 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Tue, Sep 30, priced at $349 found 21 hours ago

Mon, Sep 22 - Fri, Sep 26

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$361 Roundtrip, found 21 hours ago

$361

Roundtrip

found 21 hours ago

Select Delta flight, departing Mon, Sep 22 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Fri, Sep 26, priced at $361 found 21 hours ago

Mon, Sep 15 - Sun, Sep 21

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$365 Roundtrip, found 21 hours ago

$365

Roundtrip

found 21 hours ago

Select American Airlines flight, departing Mon, Sep 15 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Sun, Sep 21, priced at $365 found 21 hours ago

Mon, Sep 22 - Sun, Sep 28

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$371 Roundtrip, found 21 hours ago

$371

Roundtrip

found 21 hours ago

Select Delta flight, departing Mon, Sep 22 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Sun, Sep 28, priced at $371 found 21 hours ago

Sun, Sep 21 - Fri, Sep 26

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$383 Roundtrip, found 21 hours ago

$383

Roundtrip

found 21 hours ago

Select Delta flight, departing Sun, Sep 21 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Fri, Sep 26, priced at $383 found 21 hours ago

Mon, Sep 22 - Thu, Sep 25

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$395 Roundtrip, found 21 hours ago

$395

Roundtrip

found 21 hours ago

Select Delta flight, departing Mon, Sep 22 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Thu, Sep 25, priced at $395 found 21 hours ago

Sun, Sep 21 - Sun, Sep 28

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$398 Roundtrip, found 21 hours ago

$398

Roundtrip

found 21 hours ago

Select Delta flight, departing Sun, Sep 21 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Sun, Sep 28, priced at $398 found 21 hours ago

Sun, Sep 14 - Tue, Sep 23

PWM

Portland Intl. Jetport

STL

Lambert-St. Louis Intl.

$414 Roundtrip, found 21 hours ago

$414

Roundtrip

found 21 hours ago

Select Delta flight, departing Sun, Sep 14 from Portland Intl. Jetport to Lambert-St. Louis Intl., returning Tue, Sep 23, priced at $414 found 21 hours ago