Southwest® flights from Jacksonville to Ontario/LA from $205

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Low fares from Jacksonville to Ontario/LA

$

Jacksonville (JAX)to

Ontario/LA (ONT)
Depart: 12/09/2026

One-way

Basic

From
$205
Seen: 13 hrs ago

Jacksonville (JAX)to

Ontario/LA (ONT)
Depart: 12/08/2026

One-way

Basic

From
$205
Seen: 11 hrs ago

Jacksonville (JAX)to

Ontario/LA (ONT)
Depart: 12/22/2026

One-way

Basic

From
$225
Seen: 1 hour ago

Jacksonville (JAX)to

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

One-way

Basic

From
$225
Seen: 12 hrs ago

Jacksonville (JAX)to

Ontario/LA (ONT)
Depart: 12/10/2026

One-way

Basic

From
$225
Seen: 12 hrs ago

Jacksonville (JAX)to

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

One-way

Basic

From
$225
Seen: 12 hrs ago

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Explore flights from Jacksonville to Ontario/LA

Nov 2026
From$321*
Seen: 7 hrs ago
One Way/Basic
Dec 2026
From$205*
Seen: 11 hrs ago
One Way/Basic
Jan 2027
No result for this month.
cmp-daily-histogram-bars-legend-min-price-aria-label $205
cmp-daily-histogram-bars-legend-max-price-aria-label $535
Displaying fares for November-2026
  • JAX–ONT: cmp-view-offers-disclaimer. Find Offers
    14

    Sat

    NOV

  • JAX–ONT, 11/15/2026: From $401
    15

    Sun

  • JAX–ONT, 11/16/2026: From $401
    16

    Mon

  • JAX–ONT, 11/17/2026: From $321
    17

    Tue

  • JAX–ONT, 11/18/2026: From $321
    18

    Wed

  • JAX–ONT, 11/19/2026: From $401
    19

    Thu

  • JAX–ONT, 11/20/2026: From $401
    20

    Fri

  • JAX–ONT, 11/21/2026: From $321
    21

    Sat

  • JAX–ONT, 11/22/2026: From $401
    22

    Sun

  • JAX–ONT, 11/23/2026: From $401
    23

    Mon

  • JAX–ONT, 11/24/2026: From $321
    24

    Tue

  • JAX–ONT, 11/25/2026: From $321
    25

    Wed

  • JAX–ONT, 11/26/2026: From $401
    26

    Thu

  • JAX–ONT, 11/27/2026: From $334
    27

    Fri

  • JAX–ONT, 11/28/2026: From $535
    28

    Sat

  • JAX–ONT, 11/29/2026: From $535
    29

    Sun

  • JAX–ONT, 11/30/2026: From $406
    30

    Mon

  • JAX–ONT, 12/01/2026: From $326
    01

    Tue

    DEC

  • JAX–ONT, 12/02/2026: From $321
    02

    Wed

  • JAX–ONT, 12/03/2026: From $334
    03

    Thu

  • JAX–ONT, 12/04/2026: From $245
    04

    Fri

  • JAX–ONT, 12/05/2026: From $225
    05

    Sat

  • JAX–ONT, 12/06/2026: From $294
    06

    Sun

  • JAX–ONT, 12/07/2026: From $225
    07

    Mon

  • JAX–ONT, 12/08/2026: From $205
    08

    Tue

  • JAX–ONT, 12/09/2026: From $205
    09

    Wed

  • JAX–ONT, 12/10/2026: From $225
    10

    Thu

  • JAX–ONT, 12/11/2026: From $240
    11

    Fri

  • JAX–ONT, 12/12/2026: From $225
    12

    Sat

  • JAX–ONT, 12/13/2026: From $264
    13

    Sun

    • Range$205-$535

    *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.

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