Southwest® flights from Boise to Ontario/LA from $119

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Low fares from Boise to Ontario/LA

$

Boise (BOI)to

Ontario/LA (ONT)
Depart: 02/06/2027

One-way

Basic

From
$119
Seen: 16 hrs ago

Boise (BOI)to

Ontario/LA (ONT)
Depart: 12/16/2026

One-way

Basic

From
$119
Seen: 5 hrs ago

Boise (BOI)to

Ontario/LA (ONT)
Depart: 12/15/2026

One-way

Basic

From
$119
Seen: 10 hrs ago

Boise (BOI)to

Ontario/LA (ONT)
Depart: 02/20/2027

One-way

Basic

From
$119
Seen: 2 hrs ago

Boise (BOI)to

Ontario/LA (ONT)
Depart: 01/12/2027

One-way

Basic

From
$119
Seen: 5 hrs ago

Boise (BOI)to

Ontario/LA (ONT)
Depart: 02/05/2027

One-way

Basic

From
$129
Seen: 23 hrs ago

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Explore flights from Boise to Ontario/LA

Nov 2026
From$152*
Seen: 20 hrs ago
One Way/Basic
Dec 2026
From$119*
Seen: 5 hrs ago
One Way/Basic
Jan 2027
From$119*
Seen: 5 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $129
cmp-daily-histogram-bars-legend-max-price-aria-label $285
Displaying fares for November-2026
  • BOI–ONT, 11/13/2026: From $200
    13

    Fri

    NOV

  • BOI–ONT, 11/14/2026: From $152
    14

    Sat

  • BOI–ONT, 11/15/2026: From $167
    15

    Sun

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

    Mon

  • BOI–ONT, 11/17/2026: From $152
    17

    Tue

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

    Wed

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

    Thu

  • BOI–ONT, 11/20/2026: From $285
    20

    Fri

  • BOI–ONT, 11/21/2026: From $190
    21

    Sat

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

    Sun

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

    Mon

  • BOI–ONT, 11/24/2026: From $200
    24

    Tue

  • BOI–ONT, 11/25/2026: From $240
    25

    Wed

  • BOI–ONT, 11/26/2026: From $190
    26

    Thu

  • BOI–ONT, 11/27/2026: From $240
    27

    Fri

  • BOI–ONT, 11/28/2026: From $275
    28

    Sat

  • BOI–ONT, 11/29/2026: From $279
    29

    Sun

  • BOI–ONT: cmp-view-offers-disclaimer. Find Offers
    30

    Mon

  • BOI–ONT, 12/01/2026: From $190
    01

    Tue

    DEC

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

    Wed

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

    Thu

  • BOI–ONT, 12/04/2026: From $167
    04

    Fri

  • BOI–ONT, 12/05/2026: From $152
    05

    Sat

  • BOI–ONT, 12/06/2026: From $167
    06

    Sun

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

    Mon

  • BOI–ONT, 12/08/2026: From $152
    08

    Tue

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

    Wed

  • BOI–ONT, 12/10/2026: From $190
    10

    Thu

  • BOI–ONT, 12/11/2026: From $129
    11

    Fri

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

    Sat

    • Range$129-$285

    *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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