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: 12/08/2026

One-way

Basic

From
$76
Seen: 22 hrs ago

Ontario/LA (ONT)to

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

One-way

Basic

From
$76
Seen: 19 hrs ago

Ontario/LA (ONT)to

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

One-way

Basic

From
$76
Seen: 21 hrs ago

Ontario/LA (ONT)to

San Francisco (SFO)
Depart: 01/21/2027

One-way

Basic

From
$76
Seen: 21 hrs ago

Ontario/LA (ONT)to

San Francisco (SFO)
Depart: 01/20/2027

One-way

Basic

From
$76
Seen: 21 hrs ago

Ontario/LA (ONT)to

San Francisco (SFO)
Depart: 12/05/2026

One-way

Basic

From
$76
Seen: 9 hrs ago

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Explore flights from Ontario/LA to San Francisco

Nov 2026
From$130*
Seen: 3 hrs ago
One Way/Basic
Dec 2026
From$76*
Seen: 22 hrs ago
One Way/Basic
Jan 2027
From$76*
Seen: 16 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $76
cmp-daily-histogram-bars-legend-max-price-aria-label $428
Displaying fares for November-2026
  • ONT–SFO, 11/03/2026: From $428
    03

    Tue

    NOV

  • ONT–SFO, 11/04/2026: From $428
    04

    Wed

  • ONT–SFO, 11/05/2026: From $428
    05

    Thu

  • ONT–SFO, 11/06/2026: From $428
    06

    Fri

  • ONT–SFO, 11/07/2026: From $428
    07

    Sat

  • ONT–SFO, 11/08/2026: From $428
    08

    Sun

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

    Mon

  • ONT–SFO, 11/10/2026: From $170
    10

    Tue

  • ONT–SFO, 11/11/2026: From $170
    11

    Wed

  • ONT–SFO, 11/12/2026: From $190
    12

    Thu

  • ONT–SFO, 11/13/2026: From $190
    13

    Fri

  • ONT–SFO, 11/14/2026: From $170
    14

    Sat

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

    Sun

  • ONT–SFO, 11/16/2026: From $174
    16

    Mon

  • ONT–SFO, 11/17/2026: From $130
    17

    Tue

  • ONT–SFO, 11/18/2026: From $130
    18

    Wed

  • ONT–SFO, 11/19/2026: From $240
    19

    Thu

  • ONT–SFO, 11/20/2026: From $240
    20

    Fri

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

    Sat

  • ONT–SFO, 11/22/2026: From $240
    22

    Sun

  • ONT–SFO, 11/23/2026: From $240
    23

    Mon

  • ONT–SFO, 11/24/2026: From $182
    24

    Tue

  • ONT–SFO, 11/25/2026: From $200
    25

    Wed

  • ONT–SFO: cmp-view-offers-disclaimer. Find Offers
    26

    Thu

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

    Fri

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

    Sat

  • ONT–SFO, 11/29/2026: From $428
    29

    Sun

  • ONT–SFO, 11/30/2026: From $234
    30

    Mon

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

    Tue

    DEC

  • ONT–SFO, 12/02/2026: From $76
    02

    Wed

    • Range$76-$428

    *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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