Southwest® flights from San Diego to Ontario/LA from $167

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Low fares from San Diego to Ontario/LA

$

San Diego (SAN)to

Ontario/LA (ONT)
Depart: 11/17/2026

One-way

Basic

From
$167
Seen: 18 hrs ago

San Diego (SAN)to

Ontario/LA (ONT)
Depart: 11/09/2026

One-way

Basic

From
$180
Seen: 6 hrs ago

San Diego (SAN)to

Ontario/LA (ONT)
Depart: 11/17/2026

One-way

Choice

From
$213
Seen: 18 hrs ago

San Diego (SAN)to

Ontario/LA (ONT)
Depart: 11/13/2026

One-way

Basic

From
$214
Seen: 18 hrs ago

San Diego (SAN)to

Ontario/LA (ONT)
Depart: 11/09/2026

One-way

Choice

From
$228
Seen: 6 hrs ago

San Diego (SAN)to

Ontario/LA (ONT)
Depart: 12/11/2026

One-way

Basic

From
$251
Seen: 5 hrs ago

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Explore flights from San Diego to Ontario/LA

Oct 2026
From$441*
Seen: 3 hrs ago
One Way/Basic
Nov 2026
From$167*
Seen: 18 hrs ago
One Way/Basic
Dec 2026
From$251*
Seen: 5 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $167
Displaying fares for October-2026
  • SAN–ONT, 10/24/2026: From $441
    24

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    OCT

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  • SAN–ONT, 10/27/2026: From $441
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  • SAN–ONT, 10/29/2026: From $441
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    NOV

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  • SAN–ONT, 11/05/2026: From $367
    05

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  • SAN–ONT, 11/07/2026: From $284
    07

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  • SAN–ONT, 11/09/2026: From $180
    09

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  • SAN–ONT, 11/13/2026: From $214
    13

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    14

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  • SAN–ONT, 11/17/2026: From $167
    17

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    18

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    • Range$167-$441

    *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 Diego International Airport
    Arriving at:
    LA/Ontario International Airport
    Distance:
    94 miles

    Questions we hear the most

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