Southwest® flights from Boston to San Diego from $102

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Low fares from Boston to San Diego

$

Boston (BOS)to

San Diego (SAN)
Depart: 12/09/2026

One-way

Basic

From
$102
Seen: 23 hrs ago

Boston (BOS)to

San Diego (SAN)
Depart: 12/05/2026

One-way

Basic

From
$102
Seen: 1 hour ago

Boston (BOS)to

San Diego (SAN)
Depart: 12/15/2026

One-way

Basic

From
$111
Seen: 5 hrs ago

Boston (BOS)to

San Diego (SAN)
Depart: 12/03/2026

One-way

Basic

From
$114
Seen: 4 hrs ago

Boston (BOS)to

San Diego (SAN)
Depart: 12/10/2026

One-way

Basic

From
$114
Seen: 23 hrs ago

Boston (BOS)to

San Diego (SAN)
Depart: 11/18/2026

One-way

Basic

From
$114
Seen: 23 hrs ago

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Explore flights from Boston to San Diego

Oct 2026
From$316*
Seen: 14 hrs ago
One Way/Basic
Nov 2026
From$114*
Seen: 23 hrs ago
One Way/Basic
Dec 2026
From$102*
Seen: 1 hour ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $114
cmp-daily-histogram-bars-legend-max-price-aria-label $399
Displaying fares for October-2026
  • BOS–SAN, 10/22/2026: From $399
    22

    Thu

    OCT

  • BOS–SAN, 10/23/2026: From $399
    23

    Fri

  • BOS–SAN, 10/24/2026: From $399
    24

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

    Sun

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    26

    Mon

  • BOS–SAN, 10/27/2026: From $316
    27

    Tue

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

    Wed

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

    Thu

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

    Fri

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

    Sat

  • BOS–SAN, 11/01/2026: From $316
    01

    Sun

    NOV

  • BOS–SAN, 11/02/2026: From $316
    02

    Mon

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

    Tue

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

    Wed

  • BOS–SAN, 11/05/2026: From $216
    05

    Thu

  • BOS–SAN: cmp-view-offers-disclaimer. Find Offers
    06

    Fri

  • BOS–SAN, 11/07/2026: From $199
    07

    Sat

  • BOS–SAN, 11/08/2026: From $219
    08

    Sun

  • BOS–SAN, 11/09/2026: From $136
    09

    Mon

  • BOS–SAN: cmp-view-offers-disclaimer. Find Offers
    10

    Tue

  • BOS–SAN, 11/11/2026: From $169
    11

    Wed

  • BOS–SAN, 11/12/2026: From $114
    12

    Thu

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

    Fri

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

    Sat

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

    Sun

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

    Mon

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

    Tue

  • BOS–SAN, 11/18/2026: From $114
    18

    Wed

  • BOS–SAN, 11/19/2026: From $114
    19

    Thu

  • BOS–SAN, 11/20/2026: From $202
    20

    Fri

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

    Sat

    • Range$114-$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:
    San Diego International Airport
    Distance:
    2588 miles

    Questions we hear the most

    There are 148 weekly flights from Boston to San Diego on Southwest Airlines.
    To find the lowest fares by day and time to fly Boston to San Diego with Southwest, check out our Low Fare Calendar.
    You can rent a car at San Diego International Airport book yours with your flight.
    Yes! Flights from Boston to San Diego—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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