Southwest® flights from Boise to Ontario/LA from $98

Promo Code

Low fares from Boise to Ontario/LA

$

Boise (BOI)to

Ontario/LA (ONT)
Depart: 12/01/2026

One-way

Basic

From
$98
Seen: 19 hrs ago

Boise (BOI)to

Ontario/LA (ONT)
Depart: 11/24/2026

One-way

Basic

From
$98
Seen: 15 hrs ago

Boise (BOI)to

Ontario/LA (ONT)
Depart: 12/14/2026

One-way

Basic

From
$98
Seen: 14 hrs ago

Boise (BOI)to

Ontario/LA (ONT)
Depart: 01/07/2027

One-way

Basic

From
$98
Seen: 10 hrs ago

Boise (BOI)to

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

One-way

Basic

From
$98
Seen: 9 hrs ago

Boise (BOI)to

Ontario/LA (ONT)
Depart: 11/12/2026

One-way

Basic

From
$98
Seen: 9 hrs ago

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Explore flights from Boise to Ontario/LA

Oct 2026
From$147*
Seen: 8 hrs ago
One Way/Basic
Nov 2026
From$98*
Seen: 22 hrs ago
One Way/Basic
Dec 2026
From$98*
Seen: 3 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $98
cmp-daily-histogram-bars-legend-max-price-aria-label $266
Displaying fares for October-2026
  • BOI–ONT: cmp-view-offers-disclaimer. Find Offers
    23

    Fri

    OCT

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

    Sat

  • BOI–ONT, 10/25/2026: From $162
    25

    Sun

  • BOI–ONT, 10/26/2026: From $162
    26

    Mon

  • BOI–ONT, 10/27/2026: From $147
    27

    Tue

  • BOI–ONT, 10/28/2026: From $147
    28

    Wed

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

    Thu

  • BOI–ONT, 10/30/2026: From $162
    30

    Fri

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

    Sat

  • BOI–ONT: cmp-view-offers-disclaimer. Find Offers
    01

    Sun

    NOV

  • BOI–ONT, 11/02/2026: From $162
    02

    Mon

  • BOI–ONT, 11/03/2026: From $147
    03

    Tue

  • BOI–ONT, 11/04/2026: From $147
    04

    Wed

  • BOI–ONT, 11/05/2026: From $162
    05

    Thu

  • BOI–ONT, 11/06/2026: From $190
    06

    Fri

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

    Sat

  • BOI–ONT, 11/08/2026: From $162
    08

    Sun

  • BOI–ONT, 11/09/2026: From $98
    09

    Mon

  • BOI–ONT, 11/10/2026: From $98
    10

    Tue

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

    Wed

  • BOI–ONT, 11/12/2026: From $98
    12

    Thu

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

    Fri

  • BOI–ONT: cmp-view-offers-disclaimer. Find Offers
    14

    Sat

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

    Sun

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

    Mon

  • BOI–ONT, 11/17/2026: From $98
    17

    Tue

  • BOI–ONT, 11/18/2026: From $98
    18

    Wed

  • BOI–ONT: cmp-view-offers-disclaimer. Find Offers
    19

    Thu

  • BOI–ONT, 11/20/2026: From $266
    20

    Fri

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

    Sat

  • BOI–ONT: cmp-view-offers-disclaimer. Find Offers
    22

    Sun

    • Range$98-$266

    *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:
    Boise Airport
    Arriving at:
    LA/Ontario International Airport
    Distance:
    660 miles

    Questions we hear the most

    There are 147 weekly flights from Boise to Ontario/LA on Southwest Airlines.
    To find the lowest fares by day and time to fly Boise 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 Boise 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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