Southwest® flights from San Antonio to Boston from $115

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Low fares from San Antonio to Boston

$

San Antonio (SAT)to

Boston (BOS)
Depart: 12/02/2026

One-way

Basic

From
$115
Seen: 12 hrs ago

San Antonio (SAT)to

Boston (BOS)
Depart: 12/01/2026

One-way

Basic

From
$115
Seen: 5 hrs ago

San Antonio (SAT)to

Boston (BOS)
Depart: 12/05/2026

One-way

Basic

From
$115
Seen: 33 minutes ago

San Antonio (SAT)to

Boston (BOS)
Depart: 12/03/2026

One-way

Basic

From
$115
Seen: 17 hrs ago

San Antonio (SAT)to

Boston (BOS)
Depart: 01/14/2027

One-way

Basic

From
$133
Seen: 10 hrs ago

San Antonio (SAT)to

Boston (BOS)
Depart: 11/17/2026

One-way

Basic

From
$133
Seen: 3 hrs ago

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Explore flights from San Antonio to Boston

Oct 2026
From$305*
Seen: 9 hrs ago
One Way/Basic
Nov 2026
From$133*
Seen: 3 hrs ago
One Way/Basic
Dec 2026
From$115*
Seen: 17 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $133
cmp-daily-histogram-bars-legend-max-price-aria-label $405
Displaying fares for October-2026
  • SAT–BOS, 10/23/2026: From $405
    23

    Fri

    OCT

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

    Sat

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

    Sun

  • SAT–BOS, 10/26/2026: From $405
    26

    Mon

  • SAT–BOS: cmp-view-offers-disclaimer. Find Offers
    27

    Tue

  • SAT–BOS, 10/28/2026: From $405
    28

    Wed

  • SAT–BOS, 10/29/2026: From $305
    29

    Thu

  • SAT–BOS, 10/30/2026: From $305
    30

    Fri

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

    Sat

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

    Sun

    NOV

  • SAT–BOS: cmp-view-offers-disclaimer. Find Offers
    02

    Mon

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    03

    Tue

  • SAT–BOS, 11/04/2026: From $305
    04

    Wed

  • SAT–BOS, 11/05/2026: From $300
    05

    Thu

  • SAT–BOS, 11/06/2026: From $300
    06

    Fri

  • SAT–BOS, 11/07/2026: From $255
    07

    Sat

  • SAT–BOS, 11/08/2026: From $255
    08

    Sun

  • SAT–BOS, 11/09/2026: From $143
    09

    Mon

  • SAT–BOS, 11/10/2026: From $143
    10

    Tue

  • SAT–BOS, 11/11/2026: From $143
    11

    Wed

  • SAT–BOS: cmp-view-offers-disclaimer. Find Offers
    12

    Thu

  • SAT–BOS, 11/13/2026: From $143
    13

    Fri

  • SAT–BOS, 11/14/2026: From $240
    14

    Sat

  • SAT–BOS: cmp-view-offers-disclaimer. Find Offers
    15

    Sun

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

    Mon

  • SAT–BOS, 11/17/2026: From $133
    17

    Tue

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

    Wed

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

    Thu

  • SAT–BOS, 11/20/2026: From $300
    20

    Fri

  • SAT–BOS: cmp-view-offers-disclaimer. Find Offers
    21

    Sat

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

    Sun

    • Range$133-$405

    *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:
    San Antonio International Airport
    Arriving at:
    Logan International Airport
    Distance:
    1764 miles

    Questions we hear the most

    There are 145 weekly flights from San Antonio to Boston on Southwest Airlines.
    To find the lowest fares by day and time to fly San Antonio 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 San Antonio 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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