Southwest® flights from Phoenix to Boston from $144

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Low fares from Phoenix to Boston

$

Phoenix (PHX)to

Boston (BOS)
Depart: 10/22/2026

One-way

Basic

From
$144
Seen: 1 hour ago

Phoenix (PHX)to

Boston (BOS)
Depart: 09/11/2026

One-way

Basic

From
$156
Seen: 1 hour ago

Phoenix (PHX)to

Boston (BOS)
Depart: 09/05/2026

One-way

Basic

From
$156
Seen: 12 hrs ago

Phoenix (PHX)to

Boston (BOS)
Depart: 10/07/2026

One-way

Basic

From
$169
Seen: 18 hrs ago

Phoenix (PHX)to

Boston (BOS)
Depart: 10/14/2026

One-way

Basic

From
$169
Seen: 21 hrs ago

Phoenix (PHX)to

Boston (BOS)
Depart: 10/06/2026

One-way

Basic

From
$169
Seen: 14 hrs ago

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Explore flights from Phoenix to Boston

Aug 2026
From$174*
Seen: 13 hrs ago
One Way/Basic
Sep 2026
From$156*
Seen: 1 hour ago
One Way/Basic
Oct 2026
From$144*
Seen: 1 hour ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $174
cmp-daily-histogram-bars-legend-max-price-aria-label $364
Displaying fares for August-2026
  • PHX–BOS: cmp-view-offers-disclaimer. Find Offers
    01

    Sat

    AUG

  • PHX–BOS, 08/02/2026: From $364
    02

    Sun

  • PHX–BOS, 08/03/2026: From $364
    03

    Mon

  • PHX–BOS, 08/04/2026: From $315
    04

    Tue

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

    Wed

  • PHX–BOS, 08/06/2026: From $364
    06

    Thu

  • PHX–BOS, 08/07/2026: From $329
    07

    Fri

  • PHX–BOS, 08/08/2026: From $315
    08

    Sat

  • PHX–BOS, 08/09/2026: From $339
    09

    Sun

  • PHX–BOS, 08/10/2026: From $329
    10

    Mon

  • PHX–BOS: cmp-view-offers-disclaimer. Find Offers
    11

    Tue

  • PHX–BOS, 08/12/2026: From $315
    12

    Wed

  • PHX–BOS, 08/13/2026: From $329
    13

    Thu

  • PHX–BOS, 08/14/2026: From $234
    14

    Fri

  • PHX–BOS, 08/15/2026: From $234
    15

    Sat

  • PHX–BOS, 08/16/2026: From $234
    16

    Sun

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

    Mon

  • PHX–BOS, 08/18/2026: From $234
    18

    Tue

  • PHX–BOS, 08/19/2026: From $234
    19

    Wed

  • PHX–BOS, 08/20/2026: From $234
    20

    Thu

  • PHX–BOS, 08/21/2026: From $214
    21

    Fri

  • PHX–BOS: cmp-view-offers-disclaimer. Find Offers
    22

    Sat

  • PHX–BOS, 08/23/2026: From $214
    23

    Sun

  • PHX–BOS, 08/24/2026: From $174
    24

    Mon

  • PHX–BOS: cmp-view-offers-disclaimer. Find Offers
    25

    Tue

  • PHX–BOS, 08/26/2026: From $174
    26

    Wed

  • PHX–BOS, 08/27/2026: From $174
    27

    Thu

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

    Fri

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

    Sat

  • PHX–BOS, 08/30/2026: From $211
    30

    Sun

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

    Mon

    • Range$174-$364

    *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:
    Sky Harbor International Airport
    Arriving at:
    Logan International Airport
    Distance:
    2300 miles

    Route Information

    152† 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 152 weekly flights from Phoenix to Boston on Southwest Airlines.
    To find the lowest fares by day and time to fly Phoenix to Boston with Southwest, check out our Low Fare Calendar.
    You can rent a car at Logan International Airport book yours with your flight.
    Yes! Flights from Phoenix to Boston—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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