Southwest® flights from Boston to Phoenix from $159

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Low fares from Boston to Phoenix

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Boston (BOS)to

Phoenix (PHX)
Depart: 12/07/2026

One-way

Basic

From
$159
Seen: 20 hrs ago

Boston (BOS)to

Phoenix (PHX)
Depart: 12/02/2026

One-way

Basic

From
$159
Seen: 17 hrs ago

Boston (BOS)to

Phoenix (PHX)
Depart: 12/08/2026

One-way

Basic

From
$159
Seen: 22 hrs ago

Boston (BOS)to

Phoenix (PHX)
Depart: 12/06/2026

One-way

Basic

From
$159
Seen: 19 hrs ago

Boston (BOS)to

Phoenix (PHX)
Depart: 12/04/2026

One-way

Basic

From
$159
Seen: 15 hrs ago

Boston (BOS)to

Phoenix (PHX)
Depart: 12/14/2026

One-way

Basic

From
$159
Seen: 15 hrs ago

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Explore flights from Boston to Phoenix

Nov 2026
From$205*
Seen: 6 hrs ago
One Way/Basic
Dec 2026
From$159*
Seen: 22 hrs ago
One Way/Basic
Jan 2027
From$174*
Seen: 1 hour ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $159
cmp-daily-histogram-bars-legend-max-price-aria-label $399
Displaying fares for November-2026
  • BOS–PHX: cmp-view-offers-disclaimer. Find Offers
    09

    Mon

    NOV

  • BOS–PHX, 11/10/2026: From $350
    10

    Tue

  • BOS–PHX, 11/11/2026: From $350
    11

    Wed

  • BOS–PHX, 11/12/2026: From $399
    12

    Thu

  • BOS–PHX, 11/13/2026: From $399
    13

    Fri

  • BOS–PHX: cmp-view-offers-disclaimer. Find Offers
    14

    Sat

  • BOS–PHX, 11/15/2026: From $314
    15

    Sun

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

    Mon

  • BOS–PHX: cmp-view-offers-disclaimer. Find Offers
    17

    Tue

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

    Wed

  • BOS–PHX: cmp-view-offers-disclaimer. Find Offers
    19

    Thu

  • BOS–PHX, 11/20/2026: From $276
    20

    Fri

  • BOS–PHX, 11/21/2026: From $276
    21

    Sat

  • BOS–PHX, 11/22/2026: From $205
    22

    Sun

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

    Mon

  • BOS–PHX, 11/24/2026: From $238
    24

    Tue

  • BOS–PHX, 11/25/2026: From $259
    25

    Wed

  • BOS–PHX, 11/26/2026: From $205
    26

    Thu

  • BOS–PHX, 11/27/2026: From $205
    27

    Fri

  • BOS–PHX: cmp-view-offers-disclaimer. Find Offers
    28

    Sat

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

    Sun

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

    Mon

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

    Tue

    DEC

  • BOS–PHX, 12/02/2026: From $159
    02

    Wed

  • BOS–PHX: cmp-view-offers-disclaimer. Find Offers
    03

    Thu

  • BOS–PHX, 12/04/2026: From $159
    04

    Fri

  • BOS–PHX, 12/05/2026: From $159
    05

    Sat

  • BOS–PHX, 12/06/2026: From $159
    06

    Sun

  • BOS–PHX, 12/07/2026: From $159
    07

    Mon

  • BOS–PHX, 12/08/2026: From $159
    08

    Tue

    • Range$159-$399

    *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:
    Sky Harbor International Airport
    Distance:
    2300 miles

    Questions we hear the most

    There are 155 weekly flights from Boston to Phoenix on Southwest Airlines.
    To find the lowest fares by day and time to fly Boston 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 Boston 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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