Southwest® flights from Colorado Springs to Ontario/LA from $128

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Low fares from Colorado Springs to Ontario/LA

$

Colorado Springs (COS)to

Ontario/LA (ONT)
Depart: 01/07/2027

One-way

Basic

From
$128
Seen: 22 hrs ago

Colorado Springs (COS)to

Ontario/LA (ONT)
Depart: 11/26/2026

One-way

Basic

From
$128
Seen: 2 hrs ago

Colorado Springs (COS)to

Ontario/LA (ONT)
Depart: 11/10/2026

One-way

Basic

From
$128
Seen: 1 hour ago

Colorado Springs (COS)to

Ontario/LA (ONT)
Depart: 11/23/2026

One-way

Basic

From
$128
Seen: 14 hrs ago

Colorado Springs (COS)to

Ontario/LA (ONT)
Depart: 12/07/2026

One-way

Basic

From
$133
Seen: 13 hrs ago

Colorado Springs (COS)to

Ontario/LA (ONT)
Depart: 12/20/2026

One-way

Basic

From
$156
Seen: 4 hrs ago

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Explore flights from Colorado Springs to Ontario/LA

Oct 2026
From$304*
Seen: 4 hrs ago
One Way/Basic
Nov 2026
From$128*
Seen: 2 hrs ago
One Way/Basic
Dec 2026
From$133*
Seen: 13 hrs ago
One Way/Basic
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Displaying fares for October-2026
  • COS–ONT: cmp-view-offers-disclaimer. Find Offers
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    OCT

  • COS–ONT, 10/23/2026: From $306
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  • COS–ONT, 10/29/2026: From $304
    29

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    31

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  • COS–ONT, 11/01/2026: From $304
    01

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    NOV

  • COS–ONT, 11/02/2026: From $304
    02

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  • COS–ONT, 11/06/2026: From $259
    06

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  • COS–ONT, 11/10/2026: From $128
    10

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    11

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    12

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    13

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    14

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  • COS–ONT, 11/15/2026: From $156
    15

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  • COS–ONT, 11/19/2026: From $221
    19

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  • COS–ONT, 11/20/2026: From $182
    20

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    21

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    • Range$128-$306

    *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:
    City of Colorado Springs Municipal Airport
    Arriving at:
    LA/Ontario International Airport
    Distance:
    789 miles

    Questions we hear the most

    There are 105 weekly flights from Colorado Springs to Ontario/LA on Southwest Airlines.
    To find the lowest fares by day and time to fly Colorado Springs 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 Colorado Springs 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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