Southwest® flights from Portland, ME to Seattle/Tacoma from $233

Promo Code

Low fares from Portland, ME to Seattle/Tacoma

$

Portland, ME (PWM)to

Seattle/Tacoma (SEA)
Depart: 12/07/2026

One-way

Basic

From
$233
Seen: 23 hrs ago

Portland, ME (PWM)to

Seattle/Tacoma (SEA)
Depart: 12/03/2026

One-way

Basic

From
$233
Seen: 21 hrs ago

Portland, ME (PWM)to

Seattle/Tacoma (SEA)
Depart: 01/10/2027

One-way

Basic

From
$252
Seen: 48 minutes ago

Portland, ME (PWM)to

Seattle/Tacoma (SEA)
Depart: 12/07/2026

One-way

Choice

From
$288
Seen: 23 hrs ago

Portland, ME (PWM)to

Seattle/Tacoma (SEA)
Depart: 12/03/2026

One-way

Choice

From
$288
Seen: 21 hrs ago

Portland, ME (PWM)to

Seattle/Tacoma (SEA)
Depart: 11/25/2026

One-way

Basic

From
$305
Seen: 16 hrs ago

Looking for more low-fare flights?

Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.

Find low fares

Explore flights from Portland, ME to Seattle/Tacoma

Nov 2026
From$305*
Seen: 16 hrs ago
One Way/Basic
Dec 2026
From$233*
Seen: 23 hrs ago
One Way/Basic
Jan 2027
From$252*
Seen: 48 minutes ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $233
cmp-daily-histogram-bars-legend-max-price-aria-label $950
Displaying fares for November-2026
  • PWM–SEA, 11/13/2026: From $370
    13

    Fri

    NOV

  • PWM–SEA, 11/14/2026: From $305
    14

    Sat

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    15

    Sun

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    16

    Mon

  • PWM–SEA, 11/17/2026: From $305
    17

    Tue

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    18

    Wed

  • PWM–SEA, 11/19/2026: From $370
    19

    Thu

  • PWM–SEA, 11/20/2026: From $370
    20

    Fri

  • PWM–SEA, 11/21/2026: From $305
    21

    Sat

  • PWM–SEA, 11/22/2026: From $370
    22

    Sun

  • PWM–SEA, 11/23/2026: From $370
    23

    Mon

  • PWM–SEA, 11/24/2026: From $305
    24

    Tue

  • PWM–SEA, 11/25/2026: From $305
    25

    Wed

  • PWM–SEA, 11/26/2026: From $339
    26

    Thu

  • PWM–SEA, 11/27/2026: From $339
    27

    Fri

  • PWM–SEA, 11/28/2026: From $950
    28

    Sat

  • PWM–SEA, 11/29/2026: From $950
    29

    Sun

  • PWM–SEA, 11/30/2026: From $560
    30

    Mon

  • PWM–SEA, 12/01/2026: From $310
    01

    Tue

    DEC

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    02

    Wed

  • PWM–SEA, 12/03/2026: From $233
    03

    Thu

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    04

    Fri

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    05

    Sat

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • PWM–SEA, 12/07/2026: From $233
    07

    Mon

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    09

    Wed

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    10

    Thu

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    11

    Fri

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    12

    Sat

    • Range$233-$950

    *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:
    Portland International Jetport
    Arriving at:
    Seattle/Tacoma International Airport
    Distance:
    2490 miles

    Questions we hear the most

    There are 31 weekly flights from Portland, ME to Seattle/Tacoma on Southwest Airlines.
    To find the lowest fares by day and time to fly Portland, ME to Seattle/Tacoma with Southwest, check out our Low Fare Calendar.
    You can rent a car at Seattle/Tacoma International Airport book yours with your flight.
    Yes! Flights from Portland, ME to Seattle/Tacoma—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.

    Explore Flights from Other Popular Origins

    Popular Flights from Portland, ME