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

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Low fares from Chicago-Midway to Ontario/LA

$

Chicago-Midway (MDW)to

Ontario/LA (ONT)
Depart: 12/10/2026

One-way

Basic

From
$120
Seen: 21 hrs ago

Chicago-Midway (MDW)to

Ontario/LA (ONT)
Depart: 11/07/2026

One-way

Basic

From
$120
Seen: 7 hrs ago

Chicago-Midway (MDW)to

Ontario/LA (ONT)
Depart: 10/29/2026

One-way

Basic

From
$120
Seen: 12 hrs ago

Chicago-Midway (MDW)to

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

One-way

Basic

From
$120
Seen: 16 hrs ago

Chicago-Midway (MDW)to

Ontario/LA (ONT)
Depart: 12/02/2026

One-way

Basic

From
$120
Seen: 15 hrs ago

Chicago-Midway (MDW)to

Ontario/LA (ONT)
Depart: 11/17/2026

One-way

Basic

From
$120
Seen: 3 hrs ago

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Explore flights from Chicago-Midway to Ontario/LA

Sep 2026
From$149*
Seen: 11 hrs ago
One Way/Basic
Oct 2026
From$120*
Seen: 12 hrs ago
One Way/Basic
Nov 2026
From$120*
Seen: 6 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $130
cmp-daily-histogram-bars-legend-max-price-aria-label $499
Displaying fares for September-2026
  • MDW–ONT: cmp-view-offers-disclaimer. Find Offers
    10

    Thu

    SEP

  • MDW–ONT, 09/11/2026: From $149
    11

    Fri

  • MDW–ONT, 09/12/2026: From $149
    12

    Sat

  • MDW–ONT, 09/13/2026: From $499
    13

    Sun

  • MDW–ONT, 09/14/2026: From $379
    14

    Mon

  • MDW–ONT, 09/15/2026: From $149
    15

    Tue

  • MDW–ONT: cmp-view-offers-disclaimer. Find Offers
    16

    Wed

  • MDW–ONT, 09/17/2026: From $199
    17

    Thu

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

    Fri

  • MDW–ONT, 09/19/2026: From $149
    19

    Sat

  • MDW–ONT, 09/20/2026: From $199
    20

    Sun

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

    Mon

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

    Tue

  • MDW–ONT, 09/23/2026: From $149
    23

    Wed

  • MDW–ONT, 09/24/2026: From $279
    24

    Thu

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

    Fri

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

    Sat

  • MDW–ONT: cmp-view-offers-disclaimer. Find Offers
    27

    Sun

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

    Mon

  • MDW–ONT, 09/29/2026: From $149
    29

    Tue

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

    Wed

  • MDW–ONT, 10/01/2026: From $202
    01

    Thu

    OCT

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

    Fri

  • MDW–ONT, 10/03/2026: From $130
    03

    Sat

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

    Sun

  • MDW–ONT, 10/05/2026: From $230
    05

    Mon

  • MDW–ONT, 10/06/2026: From $130
    06

    Tue

  • MDW–ONT: cmp-view-offers-disclaimer. Find Offers
    07

    Wed

  • MDW–ONT, 10/08/2026: From $235
    08

    Thu

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

    Fri

    • Range$130-$499

    *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:
    Chicago Midway International Airport
    Arriving at:
    LA/Ontario International Airport
    Average flight time:
    4 hours 14 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 Chicago (Midway) to Ontario/LA is 4 hours 14 minutes.
    There are 156 weekly flights from Chicago (Midway) to Ontario/LA on Southwest Airlines.
    Yes, Southwest flies nonstop from Chicago (Midway) to Ontario/LA once per day from Monday through Friday.
    Yes, Southwest flies nonstop from Chicago (Midway) to Ontario/LA once per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Chicago (Midway) 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 Chicago (Midway) 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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