Southwest® flights from Detroit to Ontario/LA from $229

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Low fares from Detroit to Ontario/LA

$

Detroit (DTW)to

Ontario/LA (ONT)
Depart: 12/16/2026

One-way

Basic

From
$229
Seen: 6 hrs ago

Detroit (DTW)to

Ontario/LA (ONT)
Depart: 01/19/2027

One-way

Basic

From
$229
Seen: 19 hrs ago

Detroit (DTW)to

Ontario/LA (ONT)
Depart: 12/05/2026

One-way

Basic

From
$249
Seen: 18 hrs ago

Detroit (DTW)to

Ontario/LA (ONT)
Depart: 12/03/2026

One-way

Basic

From
$249
Seen: 19 hrs ago

Detroit (DTW)to

Ontario/LA (ONT)
Depart: 12/17/2026

One-way

Basic

From
$249
Seen: 18 hrs ago

Detroit (DTW)to

Ontario/LA (ONT)
Depart: 01/21/2027

One-way

Basic

From
$249
Seen: 6 hrs ago

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Explore flights from Detroit to Ontario/LA

Nov 2026
From$363*
Seen: 6 hrs ago
One Way/Basic
Dec 2026
From$229*
Seen: 6 hrs ago
One Way/Basic
Jan 2027
From$229*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $249
cmp-daily-histogram-bars-legend-max-price-aria-label $629
Displaying fares for November-2026
  • DTW–ONT, 11/13/2026: From $629
    13

    Fri

    NOV

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    14

    Sat

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    15

    Sun

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    16

    Mon

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    17

    Tue

  • DTW–ONT, 11/18/2026: From $552
    18

    Wed

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    19

    Thu

  • DTW–ONT, 11/20/2026: From $552
    20

    Fri

  • DTW–ONT, 11/21/2026: From $552
    21

    Sat

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    22

    Sun

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    23

    Mon

  • DTW–ONT, 11/24/2026: From $552
    24

    Tue

  • DTW–ONT, 11/25/2026: From $363
    25

    Wed

  • DTW–ONT, 11/26/2026: From $363
    26

    Thu

  • DTW–ONT, 11/27/2026: From $363
    27

    Fri

  • DTW–ONT, 11/28/2026: From $534
    28

    Sat

  • DTW–ONT, 11/29/2026: From $582
    29

    Sun

  • DTW–ONT, 11/30/2026: From $398
    30

    Mon

  • DTW–ONT, 12/01/2026: From $363
    01

    Tue

    DEC

  • DTW–ONT: cmp-view-offers-disclaimer. Find Offers
    02

    Wed

  • DTW–ONT, 12/03/2026: From $249
    03

    Thu

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    04

    Fri

  • DTW–ONT, 12/05/2026: From $249
    05

    Sat

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    06

    Sun

  • DTW–ONT, 12/07/2026: From $254
    07

    Mon

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    08

    Tue

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    09

    Wed

  • DTW–ONT: cmp-view-offers-disclaimer. Find Offers
    10

    Thu

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

    Fri

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

    Sat

    • Range$249-$629

    *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:
    Wayne County Airport
    Arriving at:
    LA/Ontario International Airport
    Distance:
    1934 miles

    Questions we hear the most

    There are 78 weekly flights from Detroit to Ontario/LA on Southwest Airlines.
    To find the lowest fares by day and time to fly Detroit 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 Detroit 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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