Southwest® flights from Ontario/LA to Boston from $168

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Low fares from Ontario/LA to Boston

$

Ontario/LA (ONT)to

Boston (BOS)
Depart: 12/17/2026

One-way

Basic

From
$168
Seen: 14 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 11/01/2026

One-way

Basic

From
$204
Seen: 18 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 11/06/2026

One-way

Basic

From
$204
Seen: 17 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 11/11/2026

One-way

Basic

From
$204
Seen: 10 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 12/10/2026

One-way

Basic

From
$204
Seen: 9 hrs ago

Ontario/LA (ONT)to

Boston (BOS)
Depart: 11/02/2026

One-way

Basic

From
$204
Seen: 18 hrs ago

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Explore flights from Ontario/LA to Boston

Oct 2026
From$293*
Seen: 19 hrs ago
One Way/Basic
Nov 2026
From$204*
Seen: 15 hrs ago
One Way/Basic
Dec 2026
From$168*
Seen: 14 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $204
cmp-daily-histogram-bars-legend-max-price-aria-label $375
Displaying fares for October-2026
  • ONT–BOS, 10/19/2026: From $375
    19

    Mon

    OCT

  • ONT–BOS, 10/20/2026: From $293
    20

    Tue

  • ONT–BOS, 10/21/2026: From $293
    21

    Wed

  • ONT–BOS, 10/22/2026: From $375
    22

    Thu

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

    Fri

  • ONT–BOS, 10/24/2026: From $293
    24

    Sat

  • ONT–BOS, 10/25/2026: From $314
    25

    Sun

  • ONT–BOS: cmp-view-offers-disclaimer. Find Offers
    26

    Mon

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

    Tue

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

    Wed

  • ONT–BOS, 10/29/2026: From $314
    29

    Thu

  • ONT–BOS, 10/30/2026: From $314
    30

    Fri

  • ONT–BOS, 10/31/2026: From $293
    31

    Sat

  • ONT–BOS, 11/01/2026: From $204
    01

    Sun

    NOV

  • ONT–BOS, 11/02/2026: From $204
    02

    Mon

  • ONT–BOS, 11/03/2026: From $204
    03

    Tue

  • ONT–BOS, 11/04/2026: From $204
    04

    Wed

  • ONT–BOS, 11/05/2026: From $204
    05

    Thu

  • ONT–BOS, 11/06/2026: From $204
    06

    Fri

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

    Sat

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

    Sun

  • ONT–BOS, 11/09/2026: From $204
    09

    Mon

  • ONT–BOS, 11/10/2026: From $204
    10

    Tue

  • ONT–BOS, 11/11/2026: From $204
    11

    Wed

  • ONT–BOS, 11/12/2026: From $204
    12

    Thu

  • ONT–BOS, 11/13/2026: From $204
    13

    Fri

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

    Sat

  • ONT–BOS, 11/15/2026: From $204
    15

    Sun

  • ONT–BOS, 11/16/2026: From $235
    16

    Mon

  • ONT–BOS, 11/17/2026: From $204
    17

    Tue

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

    Wed

    • Range$204-$375

    *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

    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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