Southwest® flights from Ontario/LA to Boston from $194

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Low fares from Ontario/LA to Boston

$

Ontario/LA (ONT)to

Boston (BOS)
Depart: 11/01/2026

One-way

Basic

From
$194
Seen: 17 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 01/06/2027

One-way

Basic

From
$194
Seen: 21 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 10/21/2026

One-way

Basic

From
$194
Seen: 11 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 10/24/2026

One-way

Basic

From
$194
Seen: 17 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 10/26/2026

One-way

Basic

From
$194
Seen: 15 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 10/20/2026

One-way

Basic

From
$194
Seen: 21 hrs ago

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Explore flights from Ontario/LA to Boston

Sep 2026
From$283*
Seen: 13 hrs ago
One Way/Basic
Oct 2026
From$194*
Seen: 15 hrs ago
One Way/Basic
Nov 2026
From$194*
Seen: 9 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $194
cmp-daily-histogram-bars-legend-max-price-aria-label $382
Displaying fares for September-2026
  • ONT–BOS, 09/29/2026: From $283
    29

    Tue

    SEP

  • ONT–BOS, 09/30/2026: From $288
    30

    Wed

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

    Thu

    OCT

  • ONT–BOS, 10/02/2026: From $382
    02

    Fri

  • ONT–BOS, 10/03/2026: From $283
    03

    Sat

  • ONT–BOS, 10/04/2026: From $382
    04

    Sun

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

    Mon

  • ONT–BOS, 10/06/2026: From $283
    06

    Tue

  • ONT–BOS, 10/07/2026: From $288
    07

    Wed

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

    Thu

  • ONT–BOS, 10/09/2026: From $370
    09

    Fri

  • ONT–BOS, 10/10/2026: From $288
    10

    Sat

  • ONT–BOS, 10/11/2026: From $304
    11

    Sun

  • ONT–BOS, 10/12/2026: From $304
    12

    Mon

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

    Tue

  • ONT–BOS, 10/14/2026: From $309
    14

    Wed

  • ONT–BOS, 10/15/2026: From $304
    15

    Thu

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

    Fri

  • ONT–BOS, 10/17/2026: From $194
    17

    Sat

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

    Sun

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

    Mon

  • ONT–BOS, 10/20/2026: From $194
    20

    Tue

  • ONT–BOS, 10/21/2026: From $194
    21

    Wed

  • ONT–BOS, 10/22/2026: From $250
    22

    Thu

  • ONT–BOS, 10/23/2026: From $194
    23

    Fri

  • ONT–BOS, 10/24/2026: From $194
    24

    Sat

  • ONT–BOS, 10/25/2026: From $245
    25

    Sun

  • ONT–BOS, 10/26/2026: From $194
    26

    Mon

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

    Tue

  • ONT–BOS: cmp-view-offers-disclaimer. Find Offers
    28

    Wed

    • Range$194-$382

    *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:
    Logan International Airport
    Distance:
    2566 miles

    Route Information

    82† Weekly flights

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    There are 82 weekly flights from Ontario/LA to Boston on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to Boston with Southwest, check out our Low Fare Calendar.
    You can rent a car at Logan International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Boston—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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