Southwest® flights from Ontario/LA to Salt Lake City from $144

Promo Code

Low fares from Ontario/LA to Salt Lake City

$

Ontario/LA (ONT)to

Salt Lake City (SLC)
Depart: 12/31/2026

One-way

Basic

From
$144
Seen: 10 hrs ago

Ontario/LA (ONT)to

Salt Lake City (SLC)
Depart: 11/07/2026

One-way

Basic

From
$144
Seen: 2 hrs ago

Ontario/LA (ONT)to

Salt Lake City (SLC)
Depart: 12/02/2026

One-way

Basic

From
$144
Seen: 23 hrs ago

Ontario/LA (ONT)to

Salt Lake City (SLC)
Depart: 11/04/2026

One-way

Basic

From
$144
Seen: 3 hrs ago

Ontario/LA (ONT)to

Salt Lake City (SLC)
Depart: 12/09/2026

One-way

Basic

From
$144
Seen: 4 hrs ago

Ontario/LA (ONT)to

Salt Lake City (SLC)
Depart: 11/09/2026

One-way

Basic

From
$149
Seen: 23 hrs ago

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Explore flights from Ontario/LA to Salt Lake City

Oct 2026
From$149*
Seen: 9 hrs ago
One Way/Basic
Nov 2026
From$144*
Seen: 3 hrs ago
One Way/Basic
Dec 2026
From$144*
Seen: 4 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $149
cmp-daily-histogram-bars-legend-max-price-aria-label $360
Displaying fares for October-2026
  • ONT–SLC, 10/02/2026: From $355
    02

    Fri

    OCT

  • ONT–SLC, 10/03/2026: From $360
    03

    Sat

  • ONT–SLC, 10/04/2026: From $360
    04

    Sun

  • ONT–SLC, 10/05/2026: From $355
    05

    Mon

  • ONT–SLC, 10/06/2026: From $360
    06

    Tue

  • ONT–SLC, 10/07/2026: From $360
    07

    Wed

  • ONT–SLC, 10/08/2026: From $325
    08

    Thu

  • ONT–SLC, 10/09/2026: From $325
    09

    Fri

  • ONT–SLC: cmp-view-offers-disclaimer. Find Offers
    10

    Sat

  • ONT–SLC: cmp-view-offers-disclaimer. Find Offers
    11

    Sun

  • ONT–SLC, 10/12/2026: From $325
    12

    Mon

  • ONT–SLC, 10/13/2026: From $330
    13

    Tue

  • ONT–SLC, 10/14/2026: From $330
    14

    Wed

  • ONT–SLC, 10/15/2026: From $219
    15

    Thu

  • ONT–SLC, 10/16/2026: From $219
    16

    Fri

  • ONT–SLC: cmp-view-offers-disclaimer. Find Offers
    17

    Sat

  • ONT–SLC, 10/18/2026: From $310
    18

    Sun

  • ONT–SLC, 10/19/2026: From $219
    19

    Mon

  • ONT–SLC, 10/20/2026: From $219
    20

    Tue

  • ONT–SLC, 10/21/2026: From $219
    21

    Wed

  • ONT–SLC, 10/22/2026: From $199
    22

    Thu

  • ONT–SLC, 10/23/2026: From $161
    23

    Fri

  • ONT–SLC, 10/24/2026: From $149
    24

    Sat

  • ONT–SLC, 10/25/2026: From $230
    25

    Sun

  • ONT–SLC, 10/26/2026: From $149
    26

    Mon

  • ONT–SLC, 10/27/2026: From $149
    27

    Tue

  • ONT–SLC, 10/28/2026: From $149
    28

    Wed

  • ONT–SLC, 10/29/2026: From $149
    29

    Thu

  • ONT–SLC, 10/30/2026: From $161
    30

    Fri

  • ONT–SLC, 10/31/2026: From $149
    31

    Sat

  • ONT–SLC, 11/01/2026: From $190
    01

    Sun

    NOV

    • Range$149-$360

    *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:
    Salt Lake City International Airport
    Distance:
    558 miles

    Route Information

    143† Weekly flights

    † 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

    There are 143 weekly flights from Ontario/LA to Salt Lake City on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to Salt Lake City with Southwest, check out our Low Fare Calendar.
    You can rent a car at Salt Lake City International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Salt Lake City—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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