Southwest® flights from Phoenix to Boston from $171

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Low fares from Phoenix to Boston

$

Phoenix (PHX)to

Boston (BOS)
Depart: 10/24/2026

One-way

Basic

From
$171
Seen: 4 hrs ago

Phoenix (PHX)to

Boston (BOS)
Depart: 12/12/2026

One-way

Basic

From
$174
Seen: 19 hrs ago

Phoenix (PHX)to

Boston (BOS)
Depart: 12/10/2026

One-way

Basic

From
$174
Seen: 21 hrs ago

Phoenix (PHX)to

Boston (BOS)
Depart: 12/15/2026

One-way

Basic

From
$174
Seen: 18 hrs ago

Phoenix (PHX)to

Boston (BOS)
Depart: 12/03/2026

One-way

Basic

From
$174
Seen: 18 hrs ago

Phoenix (PHX)to

Boston (BOS)
Depart: 12/07/2026

One-way

Basic

From
$174
Seen: 2 hrs ago

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Explore flights from Phoenix to Boston

Sep 2026
From$254*
Seen: 21 hrs ago
One Way/Basic
Oct 2026
From$171*
Seen: 4 hrs ago
One Way/Basic
Nov 2026
From$184*
Seen: 21 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $208
cmp-daily-histogram-bars-legend-max-price-aria-label $465
Displaying fares for September-2026
  • PHX–BOS: cmp-view-offers-disclaimer. Find Offers
    11

    Fri

    SEP

  • PHX–BOS, 09/12/2026: From $335
    12

    Sat

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

    Sun

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

    Mon

  • PHX–BOS, 09/15/2026: From $335
    15

    Tue

  • PHX–BOS, 09/16/2026: From $335
    16

    Wed

  • PHX–BOS, 09/17/2026: From $364
    17

    Thu

  • PHX–BOS, 09/18/2026: From $364
    18

    Fri

  • PHX–BOS, 09/19/2026: From $335
    19

    Sat

  • PHX–BOS, 09/20/2026: From $364
    20

    Sun

  • PHX–BOS, 09/21/2026: From $374
    21

    Mon

  • PHX–BOS, 09/22/2026: From $335
    22

    Tue

  • PHX–BOS, 09/23/2026: From $335
    23

    Wed

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

    Thu

  • PHX–BOS, 09/25/2026: From $254
    25

    Fri

  • PHX–BOS, 09/26/2026: From $254
    26

    Sat

  • PHX–BOS, 09/27/2026: From $254
    27

    Sun

  • PHX–BOS, 09/28/2026: From $254
    28

    Mon

  • PHX–BOS, 09/29/2026: From $254
    29

    Tue

  • PHX–BOS, 09/30/2026: From $264
    30

    Wed

  • PHX–BOS, 10/01/2026: From $344
    01

    Thu

    OCT

  • PHX–BOS, 10/02/2026: From $243
    02

    Fri

  • PHX–BOS, 10/03/2026: From $243
    03

    Sat

  • PHX–BOS, 10/04/2026: From $254
    04

    Sun

  • PHX–BOS, 10/05/2026: From $208
    05

    Mon

  • PHX–BOS, 10/06/2026: From $238
    06

    Tue

  • PHX–BOS, 10/07/2026: From $248
    07

    Wed

  • PHX–BOS, 10/08/2026: From $465
    08

    Thu

  • PHX–BOS, 10/09/2026: From $379
    09

    Fri

  • PHX–BOS, 10/10/2026: From $248
    10

    Sat

    • Range$208-$465

    *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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