Southwest® flights from Ontario/LA to San Francisco from $76

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Low fares from Ontario/LA to San Francisco

$

Ontario/LA (ONT)to

San Francisco (SFO)
Depart: 11/06/2026

One-way

Basic

From
$76
Seen: 23 hrs ago

Ontario/LA (ONT)to

San Francisco (SFO)
Depart: 01/22/2027

One-way

Basic

From
$76
Seen: 14 hrs ago

Ontario/LA (ONT)to

San Francisco (SFO)
Depart: 11/13/2026

One-way

Basic

From
$76
Seen: 15 hrs ago

Ontario/LA (ONT)to

San Francisco (SFO)
Depart: 12/23/2026

One-way

Basic

From
$76
Seen: 12 hrs ago

Ontario/LA (ONT)to

San Francisco (SFO)
Depart: 11/09/2026

One-way

Basic

From
$76
Seen: 11 hrs ago

Ontario/LA (ONT)to

San Francisco (SFO)
Depart: 12/16/2026

One-way

Basic

From
$76
Seen: 10 hrs ago

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Explore flights from Ontario/LA to San Francisco

Oct 2026
From$150*
Seen: 43 minutes ago
One Way/Basic
Nov 2026
From$76*
Seen: 14 hrs ago
One Way/Basic
Dec 2026
From$76*
Seen: 9 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $76
cmp-daily-histogram-bars-legend-max-price-aria-label $432
Displaying fares for October-2026
  • ONT–SFO, 10/15/2026: From $432
    15

    Thu

    OCT

  • ONT–SFO, 10/16/2026: From $432
    16

    Fri

  • ONT–SFO, 10/17/2026: From $432
    17

    Sat

  • ONT–SFO, 10/18/2026: From $432
    18

    Sun

  • ONT–SFO, 10/19/2026: From $432
    19

    Mon

  • ONT–SFO, 10/20/2026: From $432
    20

    Tue

  • ONT–SFO, 10/21/2026: From $170
    21

    Wed

  • ONT–SFO, 10/22/2026: From $190
    22

    Thu

  • ONT–SFO, 10/23/2026: From $190
    23

    Fri

  • ONT–SFO: cmp-view-offers-disclaimer. Find Offers
    24

    Sat

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

    Sun

  • ONT–SFO, 10/26/2026: From $190
    26

    Mon

  • ONT–SFO: cmp-view-offers-disclaimer. Find Offers
    27

    Tue

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

    Wed

  • ONT–SFO, 10/29/2026: From $150
    29

    Thu

  • ONT–SFO, 10/30/2026: From $185
    30

    Fri

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

    Sat

  • ONT–SFO, 11/01/2026: From $189
    01

    Sun

    NOV

  • ONT–SFO, 11/02/2026: From $150
    02

    Mon

  • ONT–SFO, 11/03/2026: From $76
    03

    Tue

  • ONT–SFO, 11/04/2026: From $76
    04

    Wed

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

    Thu

  • ONT–SFO, 11/06/2026: From $76
    06

    Fri

  • ONT–SFO, 11/07/2026: From $76
    07

    Sat

  • ONT–SFO, 11/08/2026: From $194
    08

    Sun

  • ONT–SFO, 11/09/2026: From $76
    09

    Mon

  • ONT–SFO, 11/10/2026: From $81
    10

    Tue

  • ONT–SFO, 11/11/2026: From $81
    11

    Wed

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

    Thu

  • ONT–SFO, 11/13/2026: From $76
    13

    Fri

  • ONT–SFO, 11/14/2026: From $76
    14

    Sat

    • Range$76-$432

    *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:
    LA/Ontario International Airport
    Arriving at:
    San Francisco International Airport
    Distance:
    363 miles

    Questions we hear the most

    There are 92 weekly flights from Ontario/LA to San Francisco on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to San Francisco with Southwest, check out our Low Fare Calendar.
    You can rent a car at San Francisco International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to San Francisco—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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