Southwest® flights from San Francisco to Boston from $154

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Low fares from San Francisco to Boston

$

San Francisco (SFO)to

Boston (BOS)
Depart: 01/23/2027

One-way

Basic

From
$154
Seen: 4 hrs ago

San Francisco (SFO)to

Boston (BOS)
Depart: 12/15/2026

One-way

Basic

From
$154
Seen: 1 hour ago

San Francisco (SFO)to

Boston (BOS)
Depart: 12/09/2026

One-way

Basic

From
$159
Seen: 10 hrs ago

San Francisco (SFO)to

Boston (BOS)
Depart: 12/16/2026

One-way

Basic

From
$159
Seen: 14 hrs ago

San Francisco (SFO)to

Boston (BOS)
Depart: 01/07/2027

One-way

Basic

From
$164
Seen: 6 hrs ago

San Francisco (SFO)to

Boston (BOS)
Depart: 01/17/2027

One-way

Basic

From
$164
Seen: 22 hrs ago

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Explore flights from San Francisco to Boston

Nov 2026
From$213*
Seen: 18 hrs ago
One Way/Basic
Dec 2026
From$154*
Seen: 1 hour ago
One Way/Basic
Jan 2027
From$154*
Seen: 4 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $159
cmp-daily-histogram-bars-legend-max-price-aria-label $485
Displaying fares for November-2026
  • SFO–BOS, 11/11/2026: From $469
    11

    Wed

    NOV

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

    Thu

  • SFO–BOS, 11/13/2026: From $384
    13

    Fri

  • SFO–BOS, 11/14/2026: From $384
    14

    Sat

  • SFO–BOS, 11/15/2026: From $384
    15

    Sun

  • SFO–BOS, 11/16/2026: From $384
    16

    Mon

  • SFO–BOS, 11/17/2026: From $314
    17

    Tue

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

    Wed

  • SFO–BOS, 11/19/2026: From $364
    19

    Thu

  • SFO–BOS, 11/20/2026: From $364
    20

    Fri

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

    Sat

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

    Sun

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

    Mon

  • SFO–BOS, 11/24/2026: From $284
    24

    Tue

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

    Wed

  • SFO–BOS, 11/26/2026: From $213
    26

    Thu

  • SFO–BOS, 11/27/2026: From $213
    27

    Fri

  • SFO–BOS, 11/28/2026: From $485
    28

    Sat

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

    Sun

  • SFO–BOS, 11/30/2026: From $284
    30

    Mon

  • SFO–BOS, 12/01/2026: From $174
    01

    Tue

    DEC

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

    Wed

  • SFO–BOS, 12/03/2026: From $174
    03

    Thu

  • SFO–BOS, 12/04/2026: From $174
    04

    Fri

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

    Sat

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

    Sun

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

    Mon

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

    Tue

  • SFO–BOS, 12/09/2026: From $159
    09

    Wed

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

    Thu

    • Range$159-$485

    *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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