Southwest® flights from Boston to Boise from $119

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Low fares from Boston to Boise

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Boston (BOS)to

Boise (BOI)
Depart: 09/02/2026

One-way

Basic

From
$119
Seen: 5 hrs ago

Boston (BOS)to

Boise (BOI)
Depart: 09/02/2026

One-way

Choice

From
$170
Seen: 5 hrs ago

Boston (BOS)to

Boise (BOI)
Depart: 09/19/2026

One-way

Basic

From
$172
Seen: 1 hour ago

Boston (BOS)to

Boise (BOI)
Depart: 08/24/2026

One-way

Basic

From
$205
Seen: 5 hrs ago

Boston (BOS)to

Boise (BOI)
Depart: 08/22/2026

One-way

Basic

From
$210
Seen: 2 hrs ago

Boston (BOS)to

Boise (BOI)
Depart: 08/28/2026

One-way

Basic

From
$210
Seen: 1 hour ago

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Explore flights from Boston to Boise

Aug 2026
From$205*
Seen: 5 hrs ago
One Way/Basic
Sep 2026
From$119*
Seen: 5 hrs ago
One Way/Basic
Oct 2026
From$213*
Seen: 6 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $119
Displaying fares for August-2026
  • BOS–BOI: cmp-view-offers-disclaimer. Find Offers
    13

    Thu

    AUG

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    14

    Fri

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    15

    Sat

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    16

    Sun

  • BOS–BOI, 08/17/2026: From $372
    17

    Mon

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    18

    Tue

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    19

    Wed

  • BOS–BOI, 08/20/2026: From $213
    20

    Thu

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    21

    Fri

  • BOS–BOI, 08/22/2026: From $210
    22

    Sat

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    23

    Sun

  • BOS–BOI, 08/24/2026: From $205
    24

    Mon

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    25

    Tue

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    26

    Wed

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    27

    Thu

  • BOS–BOI, 08/28/2026: From $210
    28

    Fri

  • BOS–BOI: cmp-view-offers-disclaimer. Find Offers
    29

    Sat

  • BOS–BOI, 08/30/2026: From $224
    30

    Sun

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    31

    Mon

  • BOS–BOI: cmp-view-offers-disclaimer. Find Offers
    01

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    SEP

  • BOS–BOI, 09/02/2026: From $119
    02

    Wed

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    03

    Thu

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    04

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    05

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    06

    Sun

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    07

    Mon

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    08

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    09

    Wed

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    10

    Thu

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    11

    Fri

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

    Sat

    • Range$119-$372

    *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:
    Logan International Airport
    Arriving at:
    Boise Airport
    Distance:
    2265 miles

    Route Information

    47† Weekly flights

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    There are 47 weekly flights from Boston to Boise on Southwest Airlines.
    To find the lowest fares by day and time to fly Boston 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 Boston 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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