Southwest® flights from Boise to Phoenix from $99

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Low fares from Boise to Phoenix

$

Boise (BOI)to

Phoenix (PHX)
Depart: 11/11/2026

One-way

Basic

From
$99
Seen: 12 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 09/19/2026

One-way

Basic

From
$99
Seen: 20 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 10/14/2026

One-way

Basic

From
$99
Seen: 19 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 10/13/2026

One-way

Basic

From
$99
Seen: 2 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 09/12/2026

One-way

Basic

From
$99
Seen: 23 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 10/10/2026

One-way

Basic

From
$99
Seen: 16 hrs ago

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Explore flights from Boise to Phoenix

Aug 2026
From$214*
Seen: 19 hrs ago
One Way/Basic
Sep 2026
From$99*
Seen: 23 hrs ago
One Way/Basic
Oct 2026
From$99*
Seen: 17 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $99
cmp-daily-histogram-bars-legend-max-price-aria-label $224
Displaying fares for August-2026
  • BOI–PHX, 08/21/2026: From $224
    21

    Fri

    AUG

  • BOI–PHX, 08/22/2026: From $214
    22

    Sat

  • BOI–PHX: cmp-view-offers-disclaimer. Find Offers
    23

    Sun

  • BOI–PHX: cmp-view-offers-disclaimer. Find Offers
    24

    Mon

  • BOI–PHX, 08/25/2026: From $214
    25

    Tue

  • BOI–PHX, 08/26/2026: From $214
    26

    Wed

  • BOI–PHX, 08/27/2026: From $224
    27

    Thu

  • BOI–PHX, 08/28/2026: From $224
    28

    Fri

  • BOI–PHX, 08/29/2026: From $214
    29

    Sat

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

    Sun

  • BOI–PHX, 08/31/2026: From $224
    31

    Mon

  • BOI–PHX, 09/01/2026: From $214
    01

    Tue

    SEP

  • BOI–PHX, 09/02/2026: From $214
    02

    Wed

  • BOI–PHX, 09/03/2026: From $184
    03

    Thu

  • BOI–PHX, 09/04/2026: From $184
    04

    Fri

  • BOI–PHX: cmp-view-offers-disclaimer. Find Offers
    05

    Sat

  • BOI–PHX: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • BOI–PHX, 09/07/2026: From $224
    07

    Mon

  • BOI–PHX, 09/08/2026: From $184
    08

    Tue

  • BOI–PHX, 09/09/2026: From $184
    09

    Wed

  • BOI–PHX, 09/10/2026: From $109
    10

    Thu

  • BOI–PHX, 09/11/2026: From $109
    11

    Fri

  • BOI–PHX, 09/12/2026: From $99
    12

    Sat

  • BOI–PHX, 09/13/2026: From $109
    13

    Sun

  • BOI–PHX, 09/14/2026: From $119
    14

    Mon

  • BOI–PHX, 09/15/2026: From $99
    15

    Tue

  • BOI–PHX: cmp-view-offers-disclaimer. Find Offers
    16

    Wed

  • BOI–PHX, 09/17/2026: From $109
    17

    Thu

  • BOI–PHX, 09/18/2026: From $119
    18

    Fri

  • BOI–PHX, 09/19/2026: From $99
    19

    Sat

  • BOI–PHX, 09/20/2026: From $139
    20

    Sun

    • Range$99-$224

    *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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