Southwest® flights from Ontario/LA to Atlanta from $162

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Low fares from Ontario/LA to Atlanta

$

Ontario/LA (ONT)to

Atlanta (ATL)
Depart: 08/22/2026

One-way

Basic

From
$162
Seen: 20 hrs ago

Ontario/LA (ONT)to

Atlanta (ATL)
Depart: 09/26/2026

One-way

Basic

From
$162
Seen: 10 hrs ago

Ontario/LA (ONT)to

Atlanta (ATL)
Depart: 09/02/2026

One-way

Basic

From
$162
Seen: 6 hrs ago

Ontario/LA (ONT)to

Atlanta (ATL)
Depart: 09/22/2026

One-way

Basic

From
$162
Seen: 6 hrs ago

Ontario/LA (ONT)to

Atlanta (ATL)
Depart: 10/05/2026

One-way

Basic

From
$162
Seen: 7 hrs ago

Ontario/LA (ONT)to

Atlanta (ATL)
Depart: 08/24/2026

One-way

Basic

From
$162
Seen: 9 hrs ago

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Explore flights from Ontario/LA to Atlanta

Jul 2026
From$465*
Seen: 23 hrs ago
One Way/Basic
Aug 2026
From$162*
Seen: 9 hrs ago
One Way/Basic
Sep 2026
From$162*
Seen: 14 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $162
cmp-daily-histogram-bars-legend-max-price-aria-label $490
Displaying fares for July-2026
  • ONT–ATL, 07/31/2026: From $465
    31

    Fri

    JUL

  • ONT–ATL, 08/01/2026: From $465
    01

    Sat

  • ONT–ATL, 08/02/2026: From $490
    02

    Sun

  • ONT–ATL, 08/03/2026: From $465
    03

    Mon

  • ONT–ATL: cmp-view-offers-disclaimer. Find Offers
    04

    Tue

  • ONT–ATL, 08/05/2026: From $405
    05

    Wed

  • ONT–ATL, 08/06/2026: From $405
    06

    Thu

  • ONT–ATL, 08/07/2026: From $405
    07

    Fri

  • ONT–ATL, 08/08/2026: From $405
    08

    Sat

  • ONT–ATL, 08/09/2026: From $405
    09

    Sun

  • ONT–ATL, 08/10/2026: From $405
    10

    Mon

  • ONT–ATL: cmp-view-offers-disclaimer. Find Offers
    11

    Tue

  • ONT–ATL, 08/12/2026: From $405
    12

    Wed

  • ONT–ATL, 08/13/2026: From $304
    13

    Thu

  • ONT–ATL, 08/14/2026: From $304
    14

    Fri

  • ONT–ATL, 08/15/2026: From $304
    15

    Sat

  • ONT–ATL, 08/16/2026: From $304
    16

    Sun

  • ONT–ATL, 08/17/2026: From $304
    17

    Mon

  • ONT–ATL: cmp-view-offers-disclaimer. Find Offers
    18

    Tue

  • ONT–ATL, 08/19/2026: From $162
    19

    Wed

  • ONT–ATL, 08/20/2026: From $274
    20

    Thu

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

    Fri

  • ONT–ATL, 08/22/2026: From $162
    22

    Sat

  • ONT–ATL, 08/23/2026: From $274
    23

    Sun

  • ONT–ATL, 08/24/2026: From $162
    24

    Mon

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

    Tue

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

    Wed

  • ONT–ATL, 08/27/2026: From $162
    27

    Thu

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

    Fri

  • ONT–ATL: cmp-view-offers-disclaimer. Find Offers
    29

    Sat

  • ONT–ATL: cmp-view-offers-disclaimer. Find Offers
    30

    Sun

    • Range$162-$490

    *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:
    Hartsfield-Jackson Atlanta International Airport
    Distance:
    1900 miles

    Route Information

    134† Weekly flights

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    There are 134 weekly flights from Ontario/LA to Atlanta on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to Atlanta with Southwest, check out our Low Fare Calendar.
    You can rent a car at Hartsfield-Jackson Atlanta International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Atlanta—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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