Southwest® flights from San Francisco to Boston from $157

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Low fares from San Francisco to Boston

$

San Francisco (SFO)to

Boston (BOS)
Depart: 12/02/2026

One-way

Basic

From
$157
Seen: 23 hrs ago

San Francisco (SFO)to

Boston (BOS)
Depart: 12/10/2026

One-way

Basic

From
$157
Seen: 1 hour ago

San Francisco (SFO)to

Boston (BOS)
Depart: 01/20/2027

One-way

Basic

From
$157
Seen: 18 hrs ago

San Francisco (SFO)to

Boston (BOS)
Depart: 12/01/2026

One-way

Basic

From
$157
Seen: 12 hrs ago

San Francisco (SFO)to

Boston (BOS)
Depart: 11/18/2026

One-way

Basic

From
$157
Seen: 31 minutes ago

San Francisco (SFO)to

Boston (BOS)
Depart: 11/26/2026

One-way

Basic

From
$157
Seen: 20 hrs ago

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Explore flights from San Francisco to Boston

Oct 2026
From$429*
Seen: 17 hrs ago
One Way/Basic
Nov 2026
From$157*
Seen: 31 minutes ago
One Way/Basic
Dec 2026
From$157*
Seen: 3 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $157
cmp-daily-histogram-bars-legend-max-price-aria-label $475
Displaying fares for October-2026
  • SFO–BOS, 10/22/2026: From $475
    22

    Thu

    OCT

  • SFO–BOS: cmp-view-offers-disclaimer. Find Offers
    23

    Fri

  • SFO–BOS, 10/24/2026: From $429
    24

    Sat

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

    Sun

  • SFO–BOS, 10/26/2026: From $429
    26

    Mon

  • SFO–BOS, 10/27/2026: From $429
    27

    Tue

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

    Wed

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

    Thu

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

    Fri

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

    Sat

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

    Sun

    NOV

  • SFO–BOS, 11/02/2026: From $379
    02

    Mon

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

    Tue

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

    Wed

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

    Thu

  • SFO–BOS, 11/06/2026: From $269
    06

    Fri

  • SFO–BOS: cmp-view-offers-disclaimer. Find Offers
    07

    Sat

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

    Sun

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

    Mon

  • SFO–BOS, 11/10/2026: From $187
    10

    Tue

  • SFO–BOS, 11/11/2026: From $157
    11

    Wed

  • SFO–BOS, 11/12/2026: From $162
    12

    Thu

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

    Fri

  • SFO–BOS, 11/14/2026: From $162
    14

    Sat

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

    Sun

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

    Mon

  • SFO–BOS, 11/17/2026: From $157
    17

    Tue

  • SFO–BOS, 11/18/2026: From $157
    18

    Wed

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

    Thu

  • SFO–BOS: cmp-view-offers-disclaimer. Find Offers
    20

    Fri

  • SFO–BOS, 11/21/2026: From $269
    21

    Sat

    • Range$157-$475

    *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 Francisco International Airport
    Arriving at:
    Logan International Airport
    Distance:
    2704 miles

    Questions we hear the most

    There are 86 weekly flights from San Francisco to Boston on Southwest Airlines.
    To find the lowest fares by day and time to fly San Francisco 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 Francisco 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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