Southwest® flights from Phoenix to Ontario/LA from $59

Promo Code

Low fares from Phoenix to Ontario/LA

$

Phoenix (PHX)to

Ontario/LA (ONT)
Depart: 10/21/2026

One-way

Basic

From
$59
Seen: 22 hrs ago

Phoenix (PHX)to

Ontario/LA (ONT)
Depart: 10/03/2026

One-way

Basic

From
$59
Seen: 22 hrs ago

Phoenix (PHX)to

Ontario/LA (ONT)
Depart: 10/28/2026

One-way

Basic

From
$59
Seen: 22 hrs ago

Phoenix (PHX)to

Ontario/LA (ONT)
Depart: 09/24/2026

One-way

Basic

From
$59
Seen: 19 hrs ago

Phoenix (PHX)to

Ontario/LA (ONT)
Depart: 10/06/2026

One-way

Basic

From
$59
Seen: 18 hrs ago

Phoenix (PHX)to

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

One-way

Basic

From
$59
Seen: 19 hrs ago

Looking for more low-fare flights?

Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.

Find low fares

Explore flights from Phoenix to Ontario/LA

Aug 2026
From$224*
Seen: 9 hrs ago
One Way/Basic
Sep 2026
From$59*
Seen: 19 hrs ago
One Way/Basic
Oct 2026
From$59*
Seen: 12 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $59
cmp-daily-histogram-bars-legend-max-price-aria-label $240
Displaying fares for August-2026
  • PHX–ONT, 08/21/2026: From $240
    21

    Fri

    AUG

  • PHX–ONT, 08/22/2026: From $224
    22

    Sat

  • PHX–ONT, 08/23/2026: From $240
    23

    Sun

  • PHX–ONT, 08/24/2026: From $240
    24

    Mon

  • PHX–ONT, 08/25/2026: From $224
    25

    Tue

  • PHX–ONT, 08/26/2026: From $224
    26

    Wed

  • PHX–ONT, 08/27/2026: From $240
    27

    Thu

  • PHX–ONT, 08/28/2026: From $240
    28

    Fri

  • PHX–ONT, 08/29/2026: From $224
    29

    Sat

  • PHX–ONT, 08/30/2026: From $240
    30

    Sun

  • PHX–ONT, 08/31/2026: From $240
    31

    Mon

  • PHX–ONT, 09/01/2026: From $224
    01

    Tue

    SEP

  • PHX–ONT, 09/02/2026: From $224
    02

    Wed

  • PHX–ONT, 09/03/2026: From $217
    03

    Thu

  • PHX–ONT, 09/04/2026: From $217
    04

    Fri

  • PHX–ONT, 09/05/2026: From $171
    05

    Sat

  • PHX–ONT, 09/06/2026: From $171
    06

    Sun

  • PHX–ONT, 09/07/2026: From $217
    07

    Mon

  • PHX–ONT: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

  • PHX–ONT, 09/09/2026: From $171
    09

    Wed

  • PHX–ONT, 09/10/2026: From $59
    10

    Thu

  • PHX–ONT, 09/11/2026: From $128
    11

    Fri

  • PHX–ONT, 09/12/2026: From $128
    12

    Sat

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

    Sun

  • PHX–ONT, 09/14/2026: From $59
    14

    Mon

  • PHX–ONT, 09/15/2026: From $59
    15

    Tue

  • PHX–ONT, 09/16/2026: From $59
    16

    Wed

  • PHX–ONT, 09/17/2026: From $59
    17

    Thu

  • PHX–ONT, 09/18/2026: From $76
    18

    Fri

  • PHX–ONT, 09/19/2026: From $59
    19

    Sat

  • PHX–ONT: cmp-view-offers-disclaimer. Find Offers
    20

    Sun

    • Range$59-$240

    *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:
    Sky Harbor International Airport
    Arriving at:
    LA/Ontario International Airport
    Average flight time:
    1 hour 15 minutes
    Distance:
    325 miles

    Route Information

    154† Weekly flights
    • 4‡ Nonstop flights per day Monday through Friday
    • 3‡ Nonstop flights on Saturday
    • 4‡ Nonstop flights 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 Phoenix to Ontario/LA is 1 hour 15 minutes.
    There are 154 weekly flights from Phoenix to Ontario/LA on Southwest Airlines.
    Yes, Southwest flies nonstop from Phoenix to Ontario/LA 4 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Phoenix to Ontario/LA 3 times per day on Saturdays and 4 times per day on Sundays.
    To find the lowest fares by day and time to fly Phoenix 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 Phoenix 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.

    Explore Flights from Other Popular Origins

    Popular Flights from Phoenix