Southwest® flights from Portland, ME to Seattle/Tacoma from $134

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Low fares from Portland, ME to Seattle/Tacoma

$

Portland, ME (PWM)to

Seattle/Tacoma (SEA)
Depart: 11/17/2026

One-way

Basic

From
$134
Seen: 2 hrs ago

Portland, ME (PWM)to

Seattle/Tacoma (SEA)
Depart: 11/10/2026

One-way

Basic

From
$168
Seen: 23 hrs ago

Portland, ME (PWM)to

Seattle/Tacoma (SEA)
Depart: 11/17/2026

One-way

Choice

From
$187
Seen: 2 hrs ago

Portland, ME (PWM)to

Seattle/Tacoma (SEA)
Depart: 11/18/2026

One-way

Basic

From
$192
Seen: 2 hrs ago

Portland, ME (PWM)to

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

One-way

Basic

From
$192
Seen: 10 minutes ago

Portland, ME (PWM)to

Seattle/Tacoma (SEA)
Depart: 11/10/2026

One-way

Choice

From
$226
Seen: 23 hrs ago

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Explore flights from Portland, ME to Seattle/Tacoma

Oct 2026
From$300*
Seen: 14 hrs ago
One Way/Basic
Nov 2026
From$134*
Seen: 2 hrs ago
One Way/Basic
Dec 2026
No result for this month.
cmp-daily-histogram-bars-legend-min-price-aria-label $134
cmp-daily-histogram-bars-legend-max-price-aria-label $865
Displaying fares for October-2026
  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    23

    Fri

    OCT

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    24

    Sat

  • PWM–SEA, 10/25/2026: From $550
    25

    Sun

  • PWM–SEA, 10/26/2026: From $365
    26

    Mon

  • PWM–SEA, 10/27/2026: From $300
    27

    Tue

  • PWM–SEA, 10/28/2026: From $300
    28

    Wed

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    29

    Thu

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    30

    Fri

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    31

    Sat

  • PWM–SEA, 11/01/2026: From $865
    01

    Sun

    NOV

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    02

    Mon

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    03

    Tue

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    04

    Wed

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    05

    Thu

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    06

    Fri

  • PWM–SEA, 11/07/2026: From $300
    07

    Sat

  • PWM–SEA, 11/08/2026: From $550
    08

    Sun

  • PWM–SEA, 11/09/2026: From $334
    09

    Mon

  • PWM–SEA, 11/10/2026: From $168
    10

    Tue

  • PWM–SEA, 11/11/2026: From $192
    11

    Wed

  • PWM–SEA, 11/12/2026: From $300
    12

    Thu

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    13

    Fri

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    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 $134
    17

    Tue

  • PWM–SEA, 11/18/2026: From $192
    18

    Wed

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    19

    Thu

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    20

    Fri

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    21

    Sat

  • PWM–SEA: cmp-view-offers-disclaimer. Find Offers
    22

    Sun

    • Range$134-$865

    *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.

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