Southwest® flights from Boise to Phoenix from $99

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Low fares from Boise to Phoenix

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Boise (BOI)to

Phoenix (PHX)
Depart: 09/19/2026

One-way

Basic

From
$99
Seen: 22 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 09/01/2026

One-way

Basic

From
$99
Seen: 23 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 10/13/2026

One-way

Basic

From
$99
Seen: 13 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 09/05/2026

One-way

Basic

From
$99
Seen: 10 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 10/17/2026

One-way

Basic

From
$99
Seen: 23 hrs ago

Boise (BOI)to

Phoenix (PHX)
Depart: 09/23/2026

One-way

Basic

From
$99
Seen: 6 hrs ago

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Explore flights from Boise to Phoenix

Aug 2026
From$99*
Seen: 7 hrs ago
One Way/Basic
Sep 2026
From$99*
Seen: 6 hrs ago
One Way/Basic
Oct 2026
From$99*
Seen: 3 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $99
cmp-daily-histogram-bars-legend-max-price-aria-label $282
Displaying fares for August-2026
  • BOI–PHX, 08/01/2026: From $214
    01

    Sat

    AUG

  • BOI–PHX, 08/02/2026: From $282
    02

    Sun

  • BOI–PHX, 08/03/2026: From $242
    03

    Mon

  • BOI–PHX, 08/04/2026: From $224
    04

    Tue

  • BOI–PHX, 08/05/2026: From $214
    05

    Wed

  • BOI–PHX, 08/06/2026: From $242
    06

    Thu

  • BOI–PHX, 08/07/2026: From $224
    07

    Fri

  • BOI–PHX: cmp-view-offers-disclaimer. Find Offers
    08

    Sat

  • BOI–PHX, 08/09/2026: From $224
    09

    Sun

  • BOI–PHX, 08/10/2026: From $224
    10

    Mon

  • BOI–PHX, 08/11/2026: From $214
    11

    Tue

  • BOI–PHX, 08/12/2026: From $214
    12

    Wed

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

    Thu

  • BOI–PHX, 08/14/2026: From $184
    14

    Fri

  • BOI–PHX, 08/15/2026: From $184
    15

    Sat

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

    Sun

  • BOI–PHX, 08/17/2026: From $184
    17

    Mon

  • BOI–PHX: cmp-view-offers-disclaimer. Find Offers
    18

    Tue

  • BOI–PHX, 08/19/2026: From $184
    19

    Wed

  • BOI–PHX, 08/20/2026: From $184
    20

    Thu

  • BOI–PHX, 08/21/2026: From $159
    21

    Fri

  • BOI–PHX, 08/22/2026: From $159
    22

    Sat

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

    Sun

  • BOI–PHX, 08/24/2026: From $159
    24

    Mon

  • BOI–PHX, 08/25/2026: From $159
    25

    Tue

  • BOI–PHX: cmp-view-offers-disclaimer. Find Offers
    26

    Wed

  • BOI–PHX, 08/27/2026: From $109
    27

    Thu

  • BOI–PHX, 08/28/2026: From $109
    28

    Fri

  • BOI–PHX, 08/29/2026: From $99
    29

    Sat

  • BOI–PHX, 08/30/2026: From $109
    30

    Sun

  • BOI–PHX: cmp-view-offers-disclaimer. Find Offers
    31

    Mon

    • Range$99-$282

    *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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