Southwest® flights from Boise to Phoenix from $129

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Low fares from Boise to Phoenix

$

Boise (BOI)to

Phoenix (PHX)
Depart: 10/13/2026

One-way

Basic

From
$129
Seen: 21 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 11/17/2026

One-way

Basic

From
$129
Seen: 13 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 12/12/2026

One-way

Basic

From
$129
Seen: 7 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 12/09/2026

One-way

Basic

From
$129
Seen: 13 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 12/08/2026

One-way

Basic

From
$129
Seen: 6 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 10/21/2026

One-way

Basic

From
$129
Seen: 5 hrs ago

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Explore flights from Boise to Phoenix

Sep 2026
From$194*
Seen: 22 hrs ago
One Way/Basic
Oct 2026
From$129*
Seen: 5 hrs ago
One Way/Basic
Nov 2026
From$129*
Seen: 13 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $139
cmp-daily-histogram-bars-legend-max-price-aria-label $234
Displaying fares for September-2026
  • BOI–PHX, 09/12/2026: From $234
    12

    Sat

    SEP

  • BOI–PHX, 09/13/2026: From $234
    13

    Sun

  • BOI–PHX, 09/14/2026: From $234
    14

    Mon

  • BOI–PHX, 09/15/2026: From $234
    15

    Tue

  • BOI–PHX, 09/16/2026: From $234
    16

    Wed

  • BOI–PHX, 09/17/2026: From $234
    17

    Thu

  • BOI–PHX, 09/18/2026: From $234
    18

    Fri

  • BOI–PHX, 09/19/2026: From $234
    19

    Sat

  • BOI–PHX, 09/20/2026: From $234
    20

    Sun

  • BOI–PHX, 09/21/2026: From $234
    21

    Mon

  • BOI–PHX, 09/22/2026: From $234
    22

    Tue

  • BOI–PHX, 09/23/2026: From $234
    23

    Wed

  • BOI–PHX, 09/24/2026: From $234
    24

    Thu

  • BOI–PHX, 09/25/2026: From $194
    25

    Fri

  • BOI–PHX, 09/26/2026: From $194
    26

    Sat

  • BOI–PHX, 09/27/2026: From $194
    27

    Sun

  • BOI–PHX, 09/28/2026: From $194
    28

    Mon

  • BOI–PHX, 09/29/2026: From $194
    29

    Tue

  • BOI–PHX: cmp-view-offers-disclaimer. Find Offers
    30

    Wed

  • BOI–PHX, 10/01/2026: From $194
    01

    Thu

    OCT

  • BOI–PHX, 10/02/2026: From $169
    02

    Fri

  • BOI–PHX, 10/03/2026: From $169
    03

    Sat

  • BOI–PHX, 10/04/2026: From $189
    04

    Sun

  • BOI–PHX, 10/05/2026: From $169
    05

    Mon

  • BOI–PHX, 10/06/2026: From $169
    06

    Tue

  • BOI–PHX, 10/07/2026: From $159
    07

    Wed

  • BOI–PHX, 10/08/2026: From $184
    08

    Thu

  • BOI–PHX, 10/09/2026: From $179
    09

    Fri

  • BOI–PHX, 10/10/2026: From $169
    10

    Sat

  • BOI–PHX, 10/11/2026: From $139
    11

    Sun

    • Range$139-$234

    *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:
    Boise Airport
    Arriving at:
    Sky Harbor International Airport
    Average flight time:
    2 hours 3 minutes
    Distance:
    735 miles

    Route Information

    153† Weekly flights
    • 2‡ Nonstop flights per day Monday through Friday
    • 1‡ Nonstop flight on Saturday
    • 2‡ Nonstop flights on Sunday

    † 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

    The average flight time from Boise to Phoenix is 2 hours 3 minutes.
    There are 153 weekly flights from Boise to Phoenix on Southwest Airlines.
    Yes, Southwest flies nonstop from Boise to Phoenix 2 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Boise to Phoenix once per day on Saturdays and 2 times per day on Sundays.
    To find the lowest fares by day and time to fly Boise to Phoenix with Southwest, check out our Low Fare Calendar.
    You can rent a car at Sky Harbor International Airport book yours with your flight.
    Yes! Flights from Boise to Phoenix—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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