Southwest® flights from Jacksonville to Ontario/LA from $140

Promo Code

Low fares from Jacksonville to Ontario/LA

$

Jacksonville (JAX)to

Ontario/LA (ONT)
Depart: 11/18/2026

One-way

Basic

From
$140
Seen: 14 hrs ago

Jacksonville (JAX)to

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

One-way

Basic

From
$140
Seen: 14 hrs ago

Jacksonville (JAX)to

Ontario/LA (ONT)
Depart: 11/13/2026

One-way

Basic

From
$169
Seen: 1 hour ago

Jacksonville (JAX)to

Ontario/LA (ONT)
Depart: 11/15/2026

One-way

Basic

From
$169
Seen: 12 hrs ago

Jacksonville (JAX)to

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

One-way

Choice

From
$195
Seen: 14 hrs ago

Jacksonville (JAX)to

Ontario/LA (ONT)
Depart: 11/18/2026

One-way

Choice

From
$195
Seen: 14 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 Jacksonville to Ontario/LA

Oct 2026
From$311*
Seen: 1 hour ago
One Way/Basic
Nov 2026
From$140*
Seen: 14 hrs ago
One Way/Basic
Dec 2026
From$284*
Seen: 1 hour ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $140
cmp-daily-histogram-bars-legend-max-price-aria-label $391
Displaying fares for October-2026
  • JAX–ONT, 10/24/2026: From $311
    24

    Sat

    OCT

  • JAX–ONT, 10/25/2026: From $391
    25

    Sun

  • JAX–ONT, 10/26/2026: From $378
    26

    Mon

  • JAX–ONT, 10/27/2026: From $311
    27

    Tue

  • JAX–ONT, 10/28/2026: From $311
    28

    Wed

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

    Thu

  • JAX–ONT, 10/30/2026: From $391
    30

    Fri

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

    Sat

  • JAX–ONT, 11/01/2026: From $391
    01

    Sun

    NOV

  • JAX–ONT, 11/02/2026: From $391
    02

    Mon

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

    Tue

  • JAX–ONT, 11/04/2026: From $311
    04

    Wed

  • JAX–ONT: cmp-view-offers-disclaimer. Find Offers
    05

    Thu

  • JAX–ONT, 11/06/2026: From $324
    06

    Fri

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

    Sat

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

    Sun

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

    Mon

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

    Tue

  • JAX–ONT, 11/11/2026: From $311
    11

    Wed

  • JAX–ONT, 11/12/2026: From $284
    12

    Thu

  • JAX–ONT, 11/13/2026: From $169
    13

    Fri

  • JAX–ONT, 11/14/2026: From $284
    14

    Sat

  • JAX–ONT, 11/15/2026: From $169
    15

    Sun

  • JAX–ONT, 11/16/2026: From $284
    16

    Mon

  • JAX–ONT, 11/17/2026: From $140
    17

    Tue

  • JAX–ONT, 11/18/2026: From $140
    18

    Wed

  • JAX–ONT, 11/19/2026: From $289
    19

    Thu

  • JAX–ONT, 11/20/2026: From $232
    20

    Fri

  • JAX–ONT, 11/21/2026: From $250
    21

    Sat

  • JAX–ONT, 11/22/2026: From $254
    22

    Sun

  • JAX–ONT: cmp-view-offers-disclaimer. Find Offers
    23

    Mon

    • Range$140-$391

    *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:
    Jacksonville International Airport
    Arriving at:
    LA/Ontario International Airport
    Distance:
    2106 miles

    Questions we hear the most

    There are 71 weekly flights from Jacksonville to Ontario/LA on Southwest Airlines.
    To find the lowest fares by day and time to fly Jacksonville 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 Jacksonville 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 Jacksonville