Southwest® flights from Seattle/Tacoma to Boise from $124

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Low fares from Seattle/Tacoma to Boise

$

Seattle/Tacoma (SEA)to

Boise (BOI)
Depart: 12/25/2026

One-way

Basic

From
$124
Seen: 21 hrs ago

Seattle/Tacoma (SEA)to

Boise (BOI)
Depart: 12/25/2026

One-way

Choice

From
$159
Seen: 21 hrs ago

Seattle/Tacoma (SEA)to

Boise (BOI)
Depart: 11/04/2026

One-way

Basic

From
$159
Seen: 20 hrs ago

Seattle/Tacoma (SEA)to

Boise (BOI)
Depart: 11/26/2026

One-way

Basic

From
$174
Seen: 15 hrs ago

Seattle/Tacoma (SEA)to

Boise (BOI)
Depart: 12/20/2026

One-way

Basic

From
$188
Seen: 15 hrs ago

Seattle/Tacoma (SEA)to

Boise (BOI)
Depart: 11/20/2026

One-way

Basic

From
$194
Seen: 16 hrs ago

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Explore flights from Seattle/Tacoma to Boise

Oct 2026
From$289*
Seen: 6 hrs ago
One Way/Basic
Nov 2026
From$159*
Seen: 20 hrs ago
One Way/Basic
Dec 2026
From$124*
Seen: 21 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $159
Displaying fares for October-2026
  • SEA–BOI, 10/14/2026: From $384
    14

    Wed

    OCT

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

    Thu

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    16

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    17

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    18

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    19

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    20

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    21

    Wed

  • SEA–BOI, 10/22/2026: From $289
    22

    Thu

  • SEA–BOI, 10/23/2026: From $289
    23

    Fri

  • SEA–BOI, 10/24/2026: From $289
    24

    Sat

  • SEA–BOI, 10/25/2026: From $299
    25

    Sun

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    26

    Mon

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    27

    Tue

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    28

    Wed

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    29

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    30

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    31

    Sat

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    01

    Sun

    NOV

  • SEA–BOI, 11/02/2026: From $239
    02

    Mon

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    03

    Tue

  • SEA–BOI, 11/04/2026: From $159
    04

    Wed

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    05

    Thu

  • SEA–BOI, 11/06/2026: From $204
    06

    Fri

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    07

    Sat

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    08

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    09

    Mon

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    10

    Tue

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

    Wed

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

    Thu

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

    Fri

    • Range$159-$384

    *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:
    Seattle/Tacoma International Airport
    Arriving at:
    Boise Airport
    Distance:
    399 miles

    Questions we hear the most

    There are 98 weekly flights from Seattle/Tacoma to Boise on Southwest Airlines.
    To find the lowest fares by day and time to fly Seattle/Tacoma to Boise with Southwest, check out our Low Fare Calendar.
    You can rent a car at Boise Airport book yours with your flight.
    Yes! Flights from Seattle/Tacoma to Boise—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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