Southwest® flights from St. Louis to Portland, OR from $133

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Low fares from St. Louis to Portland, OR

$

St. Louis (STL)to

Portland, OR (PDX)
Depart: 01/27/2027

One-way

Basic

From
$133
Seen: 8 hrs ago

St. Louis (STL)to

Portland, OR (PDX)
Depart: 12/02/2026

One-way

Basic

From
$133
Seen: 6 hrs ago

St. Louis (STL)to

Portland, OR (PDX)
Depart: 11/18/2026

One-way

Basic

From
$133
Seen: 3 hrs ago

St. Louis (STL)to

Portland, OR (PDX)
Depart: 11/10/2026

One-way

Basic

From
$133
Seen: 3 hrs ago

St. Louis (STL)to

Portland, OR (PDX)
Depart: 12/03/2026

One-way

Basic

From
$133
Seen: 1 hour ago

St. Louis (STL)to

Portland, OR (PDX)
Depart: 01/05/2027

One-way

Basic

From
$133
Seen: 1 minute ago

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Explore flights from St. Louis to Portland, OR

Oct 2026
From$249*
Seen: 23 hrs ago
One Way/Basic
Nov 2026
From$133*
Seen: 3 hrs ago
One Way/Basic
Dec 2026
From$133*
Seen: 3 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $133
cmp-daily-histogram-bars-legend-max-price-aria-label $390
Displaying fares for October-2026
  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    22

    Thu

    OCT

  • STL–PDX, 10/23/2026: From $390
    23

    Fri

  • STL–PDX, 10/24/2026: From $249
    24

    Sat

  • STL–PDX, 10/25/2026: From $350
    25

    Sun

  • STL–PDX, 10/26/2026: From $345
    26

    Mon

  • STL–PDX, 10/27/2026: From $254
    27

    Tue

  • STL–PDX, 10/28/2026: From $254
    28

    Wed

  • STL–PDX, 10/29/2026: From $332
    29

    Thu

  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    30

    Fri

  • STL–PDX, 10/31/2026: From $254
    31

    Sat

  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    01

    Sun

    NOV

  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    02

    Mon

  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    03

    Tue

  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    04

    Wed

  • STL–PDX, 11/05/2026: From $234
    05

    Thu

  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    06

    Fri

  • STL–PDX, 11/07/2026: From $234
    07

    Sat

  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    08

    Sun

  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    09

    Mon

  • STL–PDX, 11/10/2026: From $133
    10

    Tue

  • STL–PDX, 11/11/2026: From $133
    11

    Wed

  • STL–PDX, 11/12/2026: From $205
    12

    Thu

  • STL–PDX, 11/13/2026: From $169
    13

    Fri

  • STL–PDX, 11/14/2026: From $133
    14

    Sat

  • STL–PDX, 11/15/2026: From $236
    15

    Sun

  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    16

    Mon

  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    17

    Tue

  • STL–PDX, 11/18/2026: From $133
    18

    Wed

  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    19

    Thu

  • STL–PDX: cmp-view-offers-disclaimer. Find Offers
    20

    Fri

  • STL–PDX, 11/21/2026: From $234
    21

    Sat

    • Range$133-$390

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    Lambert-St Louis Int'l Airport
    Arriving at:
    Portland International Airport
    Distance:
    1708 miles

    Questions we hear the most

    There are 154 weekly flights from St. Louis to Portland, OR on Southwest Airlines.
    To find the lowest fares by day and time to fly St. Louis to Portland, OR with Southwest, check out our Low Fare Calendar.
    You can rent a car at Portland International Airport book yours with your flight.
    Yes! Flights from St. Louis to Portland, OR—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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