Southwest® flights from Ontario/LA to Boston from $184

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Low fares from Ontario/LA to Boston

$

Ontario/LA (ONT)to

Boston (BOS)
Depart: 11/18/2026

One-way

Basic

From
$184
Seen: 19 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 11/19/2026

One-way

Basic

From
$184
Seen: 2 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 10/21/2026

One-way

Basic

From
$184
Seen: 17 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 10/31/2026

One-way

Basic

From
$184
Seen: 15 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 12/04/2026

One-way

Basic

From
$184
Seen: 17 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 10/20/2026

One-way

Basic

From
$184
Seen: 16 hrs ago

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Explore flights from Ontario/LA to Boston

Sep 2026
From$184*
Seen: 2 hrs ago
One Way/Basic
Oct 2026
From$184*
Seen: 17 hrs ago
One Way/Basic
Nov 2026
From$184*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $184
cmp-daily-histogram-bars-legend-max-price-aria-label $455
Displaying fares for September-2026
  • ONT–BOS: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

    SEP

  • ONT–BOS, 09/09/2026: From $273
    09

    Wed

  • ONT–BOS, 09/10/2026: From $372
    10

    Thu

  • ONT–BOS, 09/11/2026: From $372
    11

    Fri

  • ONT–BOS, 09/12/2026: From $273
    12

    Sat

  • ONT–BOS, 09/13/2026: From $372
    13

    Sun

  • ONT–BOS, 09/14/2026: From $294
    14

    Mon

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

    Tue

  • ONT–BOS, 09/16/2026: From $273
    16

    Wed

  • ONT–BOS, 09/17/2026: From $455
    17

    Thu

  • ONT–BOS, 09/18/2026: From $294
    18

    Fri

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

    Sat

  • ONT–BOS, 09/20/2026: From $299
    20

    Sun

  • ONT–BOS, 09/21/2026: From $194
    21

    Mon

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

    Tue

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

    Wed

  • ONT–BOS, 09/24/2026: From $365
    24

    Thu

  • ONT–BOS, 09/25/2026: From $240
    25

    Fri

  • ONT–BOS, 09/26/2026: From $240
    26

    Sat

  • ONT–BOS, 09/27/2026: From $230
    27

    Sun

  • ONT–BOS, 09/28/2026: From $189
    28

    Mon

  • ONT–BOS, 09/29/2026: From $184
    29

    Tue

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

    Wed

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

    Thu

    OCT

  • ONT–BOS, 10/02/2026: From $189
    02

    Fri

  • ONT–BOS, 10/03/2026: From $220
    03

    Sat

  • ONT–BOS, 10/04/2026: From $270
    04

    Sun

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

    Mon

  • ONT–BOS: cmp-view-offers-disclaimer. Find Offers
    06

    Tue

  • ONT–BOS, 10/07/2026: From $266
    07

    Wed

    • Range$184-$455

    *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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