Southwest® flights from Ontario/LA to Chicago (Midway) from $120

Promo Code

Low fares from Ontario/LA to Chicago (Midway)

$

Ontario/LA (ONT)to

Chicago (Midway) (MDW)
Depart: 10/27/2026

One-way

Basic

From
$120
Seen: 23 hrs ago

Ontario/LA (ONT)to

Chicago (Midway) (MDW)
Depart: 10/19/2026

One-way

Basic

From
$120
Seen: 21 hrs ago

Ontario/LA (ONT)to

Chicago (Midway) (MDW)
Depart: 10/17/2026

One-way

Basic

From
$120
Seen: 3 hrs ago

Ontario/LA (ONT)to

Chicago (Midway) (MDW)
Depart: 09/19/2026

One-way

Basic

From
$120
Seen: 18 hrs ago

Ontario/LA (ONT)to

Chicago (Midway) (MDW)
Depart: 10/20/2026

One-way

Basic

From
$120
Seen: 9 hrs ago

Ontario/LA (ONT)to

Chicago (Midway) (MDW)
Depart: 10/03/2026

One-way

Basic

From
$120
Seen: 8 hrs ago

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Explore flights from Ontario/LA to Chicago (Midway)

Aug 2026
From$129*
Seen: 19 hrs ago
One Way/Basic
Sep 2026
From$120*
Seen: 2 hrs ago
One Way/Basic
Oct 2026
From$120*
Seen: 23 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $120
cmp-daily-histogram-bars-legend-max-price-aria-label $279
Displaying fares for August-2026
  • ONT–MDW: cmp-view-offers-disclaimer. Find Offers
    23

    Sun

    AUG

  • ONT–MDW, 08/24/2026: From $139
    24

    Mon

  • ONT–MDW, 08/25/2026: From $139
    25

    Tue

  • ONT–MDW, 08/26/2026: From $139
    26

    Wed

  • ONT–MDW, 08/27/2026: From $160
    27

    Thu

  • ONT–MDW, 08/28/2026: From $139
    28

    Fri

  • ONT–MDW, 08/29/2026: From $129
    29

    Sat

  • ONT–MDW, 08/30/2026: From $139
    30

    Sun

  • ONT–MDW, 08/31/2026: From $129
    31

    Mon

  • ONT–MDW, 09/01/2026: From $129
    01

    Tue

    SEP

  • ONT–MDW, 09/02/2026: From $160
    02

    Wed

  • ONT–MDW, 09/03/2026: From $279
    03

    Thu

  • ONT–MDW, 09/04/2026: From $229
    04

    Fri

  • ONT–MDW, 09/05/2026: From $129
    05

    Sat

  • ONT–MDW, 09/06/2026: From $139
    06

    Sun

  • ONT–MDW, 09/07/2026: From $229
    07

    Mon

  • ONT–MDW, 09/08/2026: From $150
    08

    Tue

  • ONT–MDW, 09/09/2026: From $160
    09

    Wed

  • ONT–MDW, 09/10/2026: From $181
    10

    Thu

  • ONT–MDW, 09/11/2026: From $129
    11

    Fri

  • ONT–MDW, 09/12/2026: From $129
    12

    Sat

  • ONT–MDW, 09/13/2026: From $150
    13

    Sun

  • ONT–MDW, 09/14/2026: From $129
    14

    Mon

  • ONT–MDW, 09/15/2026: From $129
    15

    Tue

  • ONT–MDW, 09/16/2026: From $184
    16

    Wed

  • ONT–MDW, 09/17/2026: From $244
    17

    Thu

  • ONT–MDW, 09/18/2026: From $139
    18

    Fri

  • ONT–MDW, 09/19/2026: From $120
    19

    Sat

  • ONT–MDW, 09/20/2026: From $150
    20

    Sun

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

    Mon

  • ONT–MDW, 09/22/2026: From $120
    22

    Tue

    • Range$120-$279

    *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:
    Chicago Midway International Airport
    Average flight time:
    3 hours 50 minutes
    Distance:
    1706 miles

    Route Information

    156† Weekly flights
    • 1‡ Nonstop flight per day Monday through Friday
    • 1‡ Nonstop flight on Saturday
    • 1‡ Nonstop flight on Sunday

    † 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

    The average flight time from Ontario/LA to Chicago (Midway) is 3 hours 50 minutes.
    There are 156 weekly flights from Ontario/LA to Chicago (Midway) on Southwest Airlines.
    Yes, Southwest flies nonstop from Ontario/LA to Chicago (Midway) once per day from Monday through Friday.
    Yes, Southwest flies nonstop from Ontario/LA to Chicago (Midway) once per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Ontario/LA to Chicago (Midway) with Southwest, check out our Low Fare Calendar.
    You can rent a car at Chicago Midway International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Chicago (Midway)—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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