Southwest® flights from Ontario/LA to Tucson from $126

Promo Code

Low fares from Ontario/LA to Tucson

$

Ontario/LA (ONT)to

Tucson (TUS)
Depart: 01/27/2027

One-way

Basic

From
$126
Seen: 22 minutes ago

Ontario/LA (ONT)to

Tucson (TUS)
Depart: 01/26/2027

One-way

Basic

From
$126
Seen: 19 minutes ago

Ontario/LA (ONT)to

Tucson (TUS)
Depart: 11/23/2026

One-way

Basic

From
$126
Seen: 3 hrs ago

Ontario/LA (ONT)to

Tucson (TUS)
Depart: 11/09/2026

One-way

Basic

From
$126
Seen: 8 hrs ago

Ontario/LA (ONT)to

Tucson (TUS)
Depart: 12/03/2026

One-way

Basic

From
$138
Seen: 21 hrs ago

Ontario/LA (ONT)to

Tucson (TUS)
Depart: 11/27/2026

One-way

Basic

From
$143
Seen: 15 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 Ontario/LA to Tucson

Oct 2026
From$367*
Seen: 6 hrs ago
One Way/Basic
Nov 2026
From$126*
Seen: 3 hrs ago
One Way/Basic
Dec 2026
From$138*
Seen: 21 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $126
cmp-daily-histogram-bars-legend-max-price-aria-label $421
Displaying fares for October-2026
  • ONT–TUS, 10/20/2026: From $421
    20

    Tue

    OCT

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

    Wed

  • ONT–TUS, 10/22/2026: From $421
    22

    Thu

  • ONT–TUS, 10/23/2026: From $421
    23

    Fri

  • ONT–TUS: cmp-view-offers-disclaimer. Find Offers
    24

    Sat

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

    Sun

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

    Mon

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

    Tue

  • ONT–TUS, 10/28/2026: From $367
    28

    Wed

  • ONT–TUS: cmp-view-offers-disclaimer. Find Offers
    29

    Thu

  • ONT–TUS, 10/30/2026: From $367
    30

    Fri

  • ONT–TUS: cmp-view-offers-disclaimer. Find Offers
    31

    Sat

  • ONT–TUS, 11/01/2026: From $367
    01

    Sun

    NOV

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

    Mon

  • ONT–TUS: cmp-view-offers-disclaimer. Find Offers
    03

    Tue

  • ONT–TUS, 11/04/2026: From $281
    04

    Wed

  • ONT–TUS, 11/05/2026: From $281
    05

    Thu

  • ONT–TUS: cmp-view-offers-disclaimer. Find Offers
    06

    Fri

  • ONT–TUS, 11/07/2026: From $281
    07

    Sat

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

    Sun

  • ONT–TUS, 11/09/2026: From $126
    09

    Mon

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

    Tue

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

    Wed

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

    Thu

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

    Fri

  • ONT–TUS, 11/14/2026: From $144
    14

    Sat

  • ONT–TUS: cmp-view-offers-disclaimer. Find Offers
    15

    Sun

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

    Mon

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

    Tue

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

    Wed

  • ONT–TUS, 11/19/2026: From $213
    19

    Thu

    • Range$126-$421

    *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:
    Tucson International Airport
    Distance:
    409 miles

    Questions we hear the most

    There are 97 weekly flights from Ontario/LA to Tucson on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to Tucson with Southwest, check out our Low Fare Calendar.
    You can rent a car at Tucson International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Tucson—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 Ontario/LA