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

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Low fares from Ontario/LA to Chicago (Midway)

$

Ontario/LA (ONT)to

Chicago (Midway) (MDW)
Depart: 10/30/2026

One-way

Basic

From
$120
Seen: 10 hrs ago

Ontario/LA (ONT)to

Chicago (Midway) (MDW)
Depart: 09/11/2026

One-way

Basic

From
$120
Seen: 3 hrs ago

Ontario/LA (ONT)to

Chicago (Midway) (MDW)
Depart: 09/01/2026

One-way

Basic

From
$135
Seen: 20 hrs ago

Ontario/LA (ONT)to

Chicago (Midway) (MDW)
Depart: 08/26/2026

One-way

Basic

From
$135
Seen: 20 hrs ago

Ontario/LA (ONT)to

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

One-way

Basic

From
$135
Seen: 19 hrs ago

Ontario/LA (ONT)to

Chicago (Midway) (MDW)
Depart: 10/29/2026

One-way

Basic

From
$135
Seen: 19 hrs ago

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Explore flights from Ontario/LA to Chicago (Midway)

Aug 2026
From$135*
Seen: 3 hrs ago
One Way/Basic
Sep 2026
From$120*
Seen: 3 hrs ago
One Way/Basic
Oct 2026
From$120*
Seen: 10 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $135
cmp-daily-histogram-bars-legend-max-price-aria-label $695
Displaying fares for August-2026
  • ONT–MDW, 08/03/2026: From $489
    03

    Mon

    AUG

  • ONT–MDW, 08/04/2026: From $695
    04

    Tue

  • ONT–MDW, 08/05/2026: From $489
    05

    Wed

  • ONT–MDW, 08/06/2026: From $489
    06

    Thu

  • ONT–MDW, 08/07/2026: From $489
    07

    Fri

  • ONT–MDW, 08/08/2026: From $489
    08

    Sat

  • ONT–MDW, 08/09/2026: From $489
    09

    Sun

  • ONT–MDW, 08/10/2026: From $650
    10

    Mon

  • ONT–MDW, 08/11/2026: From $650
    11

    Tue

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

    Wed

  • ONT–MDW: cmp-view-offers-disclaimer. Find Offers
    13

    Thu

  • ONT–MDW, 08/14/2026: From $489
    14

    Fri

  • ONT–MDW, 08/15/2026: From $489
    15

    Sat

  • ONT–MDW, 08/16/2026: From $320
    16

    Sun

  • ONT–MDW, 08/17/2026: From $320
    17

    Mon

  • ONT–MDW, 08/18/2026: From $320
    18

    Tue

  • ONT–MDW, 08/19/2026: From $320
    19

    Wed

  • ONT–MDW, 08/20/2026: From $330
    20

    Thu

  • ONT–MDW, 08/21/2026: From $320
    21

    Fri

  • ONT–MDW, 08/22/2026: From $320
    22

    Sat

  • ONT–MDW, 08/23/2026: From $239
    23

    Sun

  • ONT–MDW, 08/24/2026: From $135
    24

    Mon

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

    Tue

  • ONT–MDW, 08/26/2026: From $135
    26

    Wed

  • ONT–MDW, 08/27/2026: From $145
    27

    Thu

  • ONT–MDW, 08/28/2026: From $182
    28

    Fri

  • ONT–MDW, 08/29/2026: From $135
    29

    Sat

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

    Sun

  • ONT–MDW, 08/31/2026: From $135
    31

    Mon

  • ONT–MDW, 09/01/2026: From $135
    01

    Tue

    SEP

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

    Wed

    • Range$135-$695

    *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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