Southwest® flights from San Antonio to Boston from $155

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Low fares from San Antonio to Boston

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San Antonio (SAT)to

Boston (BOS)
Depart: 12/16/2026

One-way

Basic

From
$155
Seen: 10 hrs ago

San Antonio (SAT)to

Boston (BOS)
Depart: 10/27/2026

One-way

Basic

From
$155
Seen: 4 hrs ago

San Antonio (SAT)to

Boston (BOS)
Depart: 11/16/2026

One-way

Basic

From
$155
Seen: 22 hrs ago

San Antonio (SAT)to

Boston (BOS)
Depart: 10/24/2026

One-way

Basic

From
$155
Seen: 13 hrs ago

San Antonio (SAT)to

Boston (BOS)
Depart: 12/17/2026

One-way

Basic

From
$155
Seen: 10 hrs ago

San Antonio (SAT)to

Boston (BOS)
Depart: 11/02/2026

One-way

Basic

From
$155
Seen: 1 hour ago

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Explore flights from San Antonio to Boston

Oct 2026
From$155*
Seen: 4 hrs ago
One Way/Basic
Nov 2026
From$155*
Seen: 22 hrs ago
One Way/Basic
Dec 2026
From$155*
Seen: 18 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $155
cmp-daily-histogram-bars-legend-max-price-aria-label $395
Displaying fares for October-2026
  • SAT–BOS, 10/02/2026: From $395
    02

    Fri

    OCT

  • SAT–BOS, 10/03/2026: From $395
    03

    Sat

  • SAT–BOS: cmp-view-offers-disclaimer. Find Offers
    04

    Sun

  • SAT–BOS, 10/05/2026: From $395
    05

    Mon

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    06

    Tue

  • SAT–BOS, 10/07/2026: From $395
    07

    Wed

  • SAT–BOS: cmp-view-offers-disclaimer. Find Offers
    08

    Thu

  • SAT–BOS: cmp-view-offers-disclaimer. Find Offers
    09

    Fri

  • SAT–BOS, 10/10/2026: From $295
    10

    Sat

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

    Sun

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

    Mon

  • SAT–BOS, 10/13/2026: From $295
    13

    Tue

  • SAT–BOS, 10/14/2026: From $295
    14

    Wed

  • SAT–BOS, 10/15/2026: From $245
    15

    Thu

  • SAT–BOS, 10/16/2026: From $245
    16

    Fri

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

    Sat

  • SAT–BOS, 10/18/2026: From $300
    18

    Sun

  • SAT–BOS, 10/19/2026: From $201
    19

    Mon

  • SAT–BOS, 10/20/2026: From $245
    20

    Tue

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

    Wed

  • SAT–BOS, 10/22/2026: From $280
    22

    Thu

  • SAT–BOS, 10/23/2026: From $177
    23

    Fri

  • SAT–BOS, 10/24/2026: From $155
    24

    Sat

  • SAT–BOS, 10/25/2026: From $285
    25

    Sun

  • SAT–BOS: cmp-view-offers-disclaimer. Find Offers
    26

    Mon

  • SAT–BOS, 10/27/2026: From $155
    27

    Tue

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

    Wed

  • SAT–BOS, 10/29/2026: From $195
    29

    Thu

  • SAT–BOS, 10/30/2026: From $195
    30

    Fri

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

    Sat

  • SAT–BOS, 11/01/2026: From $165
    01

    Sun

    NOV

    • Range$155-$395

    *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

    Route Information

    145† 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 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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