Southwest® flights from Ontario/LA to Milwaukee from $200

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Low fares from Ontario/LA to Milwaukee

$

Ontario/LA (ONT)to

Milwaukee (MKE)
Depart: 12/02/2026

One-way

Basic

From
$200
Seen: 23 hrs ago

Ontario/LA (ONT)to

Milwaukee (MKE)
Depart: 12/08/2026

One-way

Basic

From
$200
Seen: 17 minutes ago

Ontario/LA (ONT)to

Milwaukee (MKE)
Depart: 12/19/2026

One-way

Basic

From
$210
Seen: 2 hrs ago

Ontario/LA (ONT)to

Milwaukee (MKE)
Depart: 12/07/2026

One-way

Basic

From
$215
Seen: 10 hrs ago

Ontario/LA (ONT)to

Milwaukee (MKE)
Depart: 12/17/2026

One-way

Basic

From
$215
Seen: 6 hrs ago

Ontario/LA (ONT)to

Milwaukee (MKE)
Depart: 12/10/2026

One-way

Basic

From
$215
Seen: 2 hrs ago

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Explore flights from Ontario/LA to Milwaukee

Nov 2026
From$304*
Seen: 5 hrs ago
One Way/Basic
Dec 2026
From$200*
Seen: 23 hrs ago
One Way/Basic
Jan 2027
From$364*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $200
cmp-daily-histogram-bars-legend-max-price-aria-label $397
Displaying fares for November-2026
  • ONT–MKE, 11/10/2026: From $309
    10

    Tue

    NOV

  • ONT–MKE, 11/11/2026: From $309
    11

    Wed

  • ONT–MKE, 11/12/2026: From $397
    12

    Thu

  • ONT–MKE, 11/13/2026: From $397
    13

    Fri

  • ONT–MKE, 11/14/2026: From $309
    14

    Sat

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

    Sun

  • ONT–MKE, 11/16/2026: From $397
    16

    Mon

  • ONT–MKE, 11/17/2026: From $309
    17

    Tue

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

    Wed

  • ONT–MKE, 11/19/2026: From $397
    19

    Thu

  • ONT–MKE: cmp-view-offers-disclaimer. Find Offers
    20

    Fri

  • ONT–MKE, 11/21/2026: From $309
    21

    Sat

  • ONT–MKE: cmp-view-offers-disclaimer. Find Offers
    22

    Sun

  • ONT–MKE: cmp-view-offers-disclaimer. Find Offers
    23

    Mon

  • ONT–MKE, 11/24/2026: From $304
    24

    Tue

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

    Wed

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

    Thu

  • ONT–MKE, 11/27/2026: From $329
    27

    Fri

  • ONT–MKE, 11/28/2026: From $390
    28

    Sat

  • ONT–MKE, 11/29/2026: From $384
    29

    Sun

  • ONT–MKE, 11/30/2026: From $314
    30

    Mon

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

    Tue

    DEC

  • ONT–MKE, 12/02/2026: From $200
    02

    Wed

  • ONT–MKE: cmp-view-offers-disclaimer. Find Offers
    03

    Thu

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

    Fri

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

    Sat

  • ONT–MKE: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • ONT–MKE, 12/07/2026: From $215
    07

    Mon

  • ONT–MKE, 12/08/2026: From $200
    08

    Tue

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

    Wed

    • Range$200-$397

    *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:
    General Mitchell Airport
    Distance:
    1712 miles

    Questions we hear the most

    There are 130 weekly flights from Ontario/LA to Milwaukee on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to Milwaukee with Southwest, check out our Low Fare Calendar.
    You can rent a car at General Mitchell Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Milwaukee—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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